IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 1 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. AVERAGE OF MEAN DAILY TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MAX-MIN 1964 ****** ****** ****** ****** ****** ****** ****** 28.3 23.4 16.5 12.9 4.6 ****** 1965 5.1 9.6 15.1 14.4 21.3 24.9 26.7 25.1 22.3 18.2 12.9 7.3 21.6 1966 9.5 10.0 13.2 16.6 22.2 26.3 26.9 26.5 22.8 19.2 11.5 8.2 18.7 1967 6.3 8.0 10.6 14.2 20.1 22.5 28.8 26.9 23.3 18.0 11.9 6.8 22.5 1968 6.9 6.2 13.2 16.0 20.2 25.4 26.8 27.4 23.1 19.1 13.5 9.0 21.2 1969 6.7 8.6 16.0 16.7 21.9 25.3 28.6 27.4 22.6 19.2 10.7 9.2 21.9 1970 5.5 9.9 12.3 18.9 23.0 27.7 29.1 29.6 25.5 18.4 13.2 8.1 24.1 1971 6.0 7.8 13.0 16.7 23.3 26.5 29.1 28.5 23.3 17.7 12.6 8.8 23.1 1972 4.9 4.9 10.8 15.8 18.0 24.8 28.3 25.3 24.0 18.5 14.1 5.4 23.4 1973 4.6 11.4 12.3 17.7 21.7 27.3 28.6 26.1 20.0 17.1 13.1 6.9 24.0 1974 5.8 6.4 17.2 17.3 22.5 26.7 29.8 23.2 19.6 15.6 9.9 5.9 24.0 1975 4.3 9.1 7.6 16.0 22.6 25.4 26.8 22.5 21.6 15.1 9.1 4.3 22.5 1976 4.0 8.8 12.9 20.3 21.6 27.0 ****** 23.7 23.2 15.8 9.7 5.3 ****** 1977 3.7 13.2 18.0 19.5 22.1 26.6 28.7 28.4 26.0 23.0 16.4 12.7 25.0 1978 6.8 8.7 14.8 14.5 21.4 25.0 26.1 25.2 22.8 19.1 11.0 9.0 19.3 1979 8.8 10.1 13.2 16.4 22.1 26.0 26.6 26.3 22.2 19.2 11.4 8.6 18.0 1980 6.2 10.2 12.7 16.1 22.1 26.1 26.7 26.1 22.4 18.8 12.1 8.6 20.5 1981 6.6 10.3 12.7 15.7 20.8 25.6 26.5 26.2 22.0 19.0 11.8 8.4 19.9 1982 6.2 9.9 13.1 15.8 21.4 25.7 26.9 26.6 23.0 18.8 10.6 8.2 20.7 1983 6.6 9.5 13.2 16.2 22.0 26.2 29.1 28.0 23.3 18.0 13.9 7.4 22.5 1984 6.0 7.4 12.6 16.2 21.7 25.9 26.7 26.8 22.7 17.5 13.2 8.5 20.8 1985 6.9 10.1 13.2 16.5 20.5 25.5 31.8 27.7 24.2 19.5 13.5 4.6 27.2 1986 ****** ****** ****** 15.3 23.3 ****** 29.1 26.9 22.5 21.3 12.5 6.4 ****** 1987 6.9 10.6 11.8 17.9 25.2 27.2 28.9 28.6 26.0 18.7 13.6 8.1 22.0 1988 5.7 9.3 14.2 18.3 23.5 27.1 31.0 28.2 25.4 19.9 13.2 9.0 25.3 1989 5.3 6.9 12.2 17.1 23.1 28.3 30.2 28.8 24.6 19.8 13.1 7.9 24.9 1990 6.0 8.6 13.4 18.2 25.0 28.4 29.8 29.1 26.0 20.0 13.6 8.5 23.8 1991 7.5 7.7 12.7 18.8 23.2 26.5 29.7 28.3 25.1 19.0 ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 5.9 8.8 11.1 16.7 23.1 27.5 28.9 ****** ****** ****** 13.6 10.2 ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 7.2 8.3 8.8 13.9 20.0 24.8 ****** 27.5 22.8 18.4 12.6 6.4 ****** 1996 5.2 8.9 ****** ****** ****** ****** ****** 26.4 23.2 16.5 10.7 6.7 ****** 1997 5.6 6.0 8.9 14.1 20.0 26.1 30.0 28.6 23.5 18.1 10.6 6.4 24.4 1998 4.3 7.3 12.1 17.3 22.0 26.5 29.1 27.9 24.1 18.4 12.8 8.9 24.8 1999 5.6 9.5 9.8 16.4 22.1 27.2 27.8 27.8 24.7 18.7 12.8 6.9 22.2 2000 6.5 8.0 11.8 19.3 24.3 27.5 29.0 26.7 24.7 17.5 10.9 9.8 22.5 2001 5.1 7.6 11.9 18.5 24.4 27.0 29.0 26.4 24.5 ****** ****** ****** ****** 2002 ****** ****** ****** ****** ****** 26.2 25.2 28.0 24.8 19.2 12.7 8.1 ****** 2003 6.2 10.1 12.0 17.9 22.2 29.1 30.8 28.5 25.1 18.9 11.7 8.5 24.6 MEAN 6.0 8.8 12.6 16.8 22.1 26.3 28.5 27.0 23.5 18.5 12.3 7.7 22.5 SD 1.22 1.66 2.15 1.60 1.51 1.25 1.56 1.63 1.51 1.50 1.47 1.72 1.56 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 2 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. AVERAGE OF MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 ****** ****** ****** ****** ****** ****** ****** 19.3 13.8 6.6 4.0 -1.9 ****** 1965 0.1 2.0 7.1 6.3 11.3 15.3 17.5 15.9 12.0 8.3 3.9 -1.6 8.2 1966 1.0 2.6 5.0 8.8 12.5 17.2 18.1 17.8 13.6 11.3 2.9 -0.0 9.2 1967 -1.2 2.1 3.1 6.5 10.4 11.5 20.2 17.9 13.6 8.9 5.0 0.0 8.2 1968 -0.1 0.8 5.9 9.3 12.4 16.0 18.3 18.8 13.0 10.0 5.7 3.1 9.4 1969 1.9 1.7 8.9 9.8 13.4 15.7 19.2 19.3 13.7 10.5 4.1 1.9 10.0 1970 -0.3 2.6 5.1 10.5 13.2 18.0 20.5 20.8 16.8 8.3 3.2 0.7 9.9 1971 -1.5 0.8 5.0 9.4 14.4 17.6 21.5 20.5 15.8 10.7 4.3 0.9 9.9 1972 -0.8 -1.8 4.8 8.5 8.8 14.6 19.7 16.3 14.8 8.3 5.1 -2.5 8.0 1973 -2.5 2.0 3.1 7.9 10.8 16.5 19.0 17.3 13.7 9.0 5.0 -1.4 8.4 1974 0.4 1.0 11.9 9.2 12.9 16.4 20.6 14.3 9.9 7.9 1.0 0.0 8.8 1975 -2.0 2.7 1.0 9.6 13.1 14.8 16.0 10.6 10.8 6.8 3.5 -2.0 7.1 1976 -2.2 3.4 7.9 11.0 11.7 16.7 ****** 12.7 13.0 8.3 5.6 0.1 ****** 1977 -3.0 8.6 10.9 11.6 13.1 17.0 19.1 19.3 17.4 16.5 9.9 4.8 12.1 1978 -1.0 2.0 7.3 6.6 11.6 15.2 17.6 15.6 13.3 10.9 4.6 1.2 8.8 1979 2.5 2.6 5.2 8.4 12.4 16.7 17.7 17.7 12.3 11.3 2.9 0.8 9.2 1980 -1.6 3.1 5.3 8.4 12.6 16.9 17.5 17.3 12.6 10.9 3.8 0.5 8.9 1981 -0.3 2.9 5.0 8.2 12.1 16.0 17.3 17.3 12.2 10.8 3.0 0.4 8.7 1982 -1.1 2.9 5.4 8.3 11.8 16.3 18.0 17.8 13.6 10.4 2.6 0.3 8.9 1983 -0.3 3.1 4.9 8.1 12.5 17.1 21.5 19.0 13.6 7.4 4.5 -0.1 9.3 1984 -1.6 -0.1 4.8 8.3 12.2 16.3 17.5 17.8 12.8 8.7 4.4 0.8 8.5 1985 -0.5 2.6 4.8 8.0 10.6 15.3 25.0 22.5 15.8 11.5 7.3 -0.4 10.2 1986 ****** ****** ****** 9.8 15.6 ****** 20.9 18.8 12.7 12.9 6.6 1.6 ****** 1987 0.2 3.4 5.7 10.3 17.4 18.2 20.7 20.7 17.5 11.3 8.0 1.6 11.2 1988 1.2 3.3 7.5 11.7 14.6 17.5 23.5 19.6 16.8 11.4 5.4 2.7 11.3 1989 -0.8 0.6 6.1 9.7 14.8 19.0 22.4 20.9 15.8 10.6 6.8 2.3 10.7 1990 0.7 2.5 6.5 11.0 16.9 20.1 22.6 21.3 18.5 12.4 6.5 3.0 11.8 1991 3.3 3.2 8.4 11.8 17.5 19.4 21.9 20.5 17.3 12.2 ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 1.7 4.4 5.9 10.6 16.2 19.7 21.2 ****** ****** ****** 7.2 3.5 ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 0.2 2.8 3.6 7.8 11.6 15.1 19.8 18.0 13.1 8.7 4.6 1.2 8.9 1996 0.2 3.3 ****** ****** ****** ****** ****** 17.9 14.1 7.3 2.0 -1.5 ****** 1997 -1.4 -0.8 3.1 6.9 11.7 16.4 20.8 19.3 13.5 9.4 3.8 -0.4 8.5 1998 -2.0 1.2 6.0 9.8 13.4 17.8 20.7 19.2 14.5 8.5 2.8 -0.4 9.3 1999 -0.5 3.3 2.6 7.5 12.0 16.8 18.4 19.2 14.9 9.2 4.0 -1.5 8.8 2000 -0.1 0.7 3.5 10.4 13.9 17.6 20.3 17.5 15.2 8.9 4.7 3.7 9.7 2001 -1.5 1.0 4.4 9.2 15.2 17.7 19.0 17.0 14.4 ****** ****** ****** ****** 2002 ****** ****** ****** ****** ****** 17.5 16.4 19.3 15.0 9.0 3.8 0.6 ****** 2003 -0.8 3.9 5.8 10.6 14.1 19.5 21.8 19.3 15.7 9.5 2.8 1.7 10.3 MEAN -0.4 2.3 5.6 9.1 13.1 16.8 19.8 18.2 14.3 9.8 4.6 0.7 9.5 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 3 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. AVERAGE OF MAXIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 ****** ****** ****** ****** ****** ****** ****** 37.3 33.0 26.5 21.8 11.0 ****** 1965 10.2 17.2 23.0 22.6 31.3 34.4 35.9 34.3 32.7 28.0 21.8 16.3 25.7 1966 18.1 17.3 21.4 24.4 31.8 35.5 35.8 35.3 32.1 27.1 20.1 16.4 26.3 1967 13.9 13.9 18.2 21.9 29.8 33.6 37.5 35.9 33.0 27.1 18.9 13.6 24.8 1968 13.9 11.6 20.5 22.7 28.1 34.9 35.3 36.0 33.1 28.3 21.3 15.0 25.1 1969 11.6 15.4 23.1 23.5 30.4 34.9 38.0 35.5 31.5 27.9 17.3 16.5 25.5 1970 11.2 17.1 19.6 27.3 32.9 37.5 37.8 38.5 34.2 28.5 23.3 15.5 26.9 1971 13.5 14.9 21.1 24.0 32.2 35.3 36.7 36.5 30.8 24.7 20.9 16.6 25.6 1972 10.5 11.6 16.8 23.2 27.3 35.0 36.9 34.3 33.2 28.6 23.0 13.4 24.5 1973 11.6 20.8 21.6 27.5 32.5 38.0 38.2 35.0 26.3 25.2 21.1 15.1 26.1 1974 11.1 11.8 22.5 25.5 32.2 37.1 39.1 32.1 29.3 23.3 18.8 11.7 24.5 1975 10.5 15.5 14.2 22.5 32.1 36.0 37.7 34.3 32.3 23.3 14.6 10.6 23.6 1976 10.2 14.3 18.0 29.6 31.5 37.2 38.1 34.6 33.4 23.3 13.8 10.5 24.6 1977 10.3 17.8 25.1 27.5 31.0 36.1 38.4 37.4 34.6 29.5 22.9 20.6 27.6 1978 14.6 15.4 22.3 22.3 31.2 34.7 34.6 34.7 32.2 27.2 17.4 16.8 25.3 1979 15.0 17.6 21.2 24.3 31.7 35.3 35.9 35.1 32.1 27.1 20.0 16.5 26.0 1980 14.1 17.4 20.1 23.8 31.6 35.3 35.9 35.0 32.0 26.7 20.3 16.7 25.7 1981 13.6 17.7 20.5 23.2 29.5 35.3 35.6 35.1 31.8 27.0 20.6 16.3 25.5 1982 13.7 17.1 20.7 23.3 31.0 35.1 35.9 35.4 32.2 27.2 18.5 16.2 25.5 1983 13.6 15.8 21.4 24.1 31.5 35.3 36.7 37.0 33.0 28.5 23.3 14.9 26.3 1984 13.6 14.8 20.4 24.1 31.1 35.5 35.9 35.9 32.6 26.4 22.1 16.2 25.7 1985 14.2 17.5 21.7 24.9 30.5 35.8 38.5 32.8 32.8 27.6 19.7 9.8 25.5 1986 ****** ****** ****** 21.0 32.1 36.6 37.4 35.0 32.3 29.6 18.3 11.2 ****** 1987 13.7 17.8 18.0 25.6 33.0 36.3 37.2 36.6 34.5 26.2 19.1 14.5 26.0 1988 10.1 15.2 21.0 25.0 32.4 36.7 38.5 36.7 34.0 28.4 21.0 15.4 26.2 1989 11.4 13.2 18.3 24.5 31.4 37.4 38.0 36.8 33.4 29.0 19.5 13.5 25.5 1990 11.2 14.7 20.3 25.3 33.2 36.7 36.9 36.8 33.6 27.6 20.6 13.9 25.9 1991 11.7 12.2 17.0 25.7 29.0 33.7 37.4 36.1 32.8 25.9 ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 10.1 13.3 16.4 22.8 30.0 35.3 36.6 ****** ****** ****** 20.0 16.8 ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 14.2 13.8 14.0 20.0 28.5 34.3 ****** 37.0 32.5 28.0 20.7 11.6 ****** 1996 10.2 14.6 15.4 21.3 27.7 33.3 34.6 34.9 32.2 25.8 19.5 14.9 23.7 1997 12.6 12.8 14.7 21.3 28.3 35.7 39.2 38.0 33.4 26.9 17.5 13.2 24.5 1998 10.5 13.3 18.2 24.9 30.7 35.3 37.4 36.7 33.7 28.2 22.8 18.3 25.8 1999 11.6 15.7 16.9 25.2 32.2 37.5 37.2 36.5 34.5 28.2 21.7 15.2 26.0 2000 13.1 15.3 20.2 28.0 34.7 37.4 37.8 35.9 34.1 26.2 17.1 15.9 26.3 2001 11.6 14.2 19.3 27.8 33.6 36.3 39.1 35.8 34.7 27.7 20.0 14.7 26.2 2002 12.3 16.2 ****** ****** ****** 34.9 34.0 36.7 34.6 29.4 21.5 15.5 ****** 2003 13.2 16.3 18.2 25.1 30.6 37.5 39.8 37.6 34.6 28.3 20.6 15.2 26.4 MEAN 12.4 15.3 19.5 24.3 31.1 35.8 37.1 35.8 32.8 27.1 20.0 14.7 25.5 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 4 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. DIFFERENCE BETWEEN AVERAGE MAXIMUM AND MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 ****** ****** ****** ****** ****** ****** ****** 18.0 19.2 19.9 17.8 12.9 ****** 1965 10.1 15.2 15.9 16.3 20.0 19.1 18.4 18.4 20.7 19.7 17.9 17.9 17.5 1966 17.1 14.7 16.4 15.7 19.3 18.3 17.7 17.5 18.5 15.8 17.2 16.4 17.0 1967 15.1 11.8 15.1 15.4 19.4 22.1 17.3 18.0 19.4 18.2 13.9 13.6 16.6 1968 14.0 10.8 14.6 13.4 15.7 18.9 17.0 17.2 20.1 18.3 15.6 11.9 15.6 1969 9.7 13.7 14.2 13.7 17.0 19.2 18.8 16.2 17.8 17.4 13.2 14.6 15.5 1970 11.5 14.5 14.5 16.8 19.7 19.5 17.3 17.7 17.4 20.2 20.0 14.8 17.0 1971 15.0 14.1 16.1 14.6 17.8 17.7 15.2 16.0 15.1 14.0 16.6 15.7 15.7 1972 11.3 13.4 12.0 14.7 18.5 20.4 17.2 18.0 18.4 20.3 17.9 15.9 16.5 1973 14.1 18.8 18.5 19.6 21.7 21.5 19.2 17.7 12.6 16.2 16.1 16.5 17.7 1974 10.7 10.8 10.6 16.3 19.3 20.7 18.5 17.8 19.4 15.4 17.8 11.7 15.7 1975 12.5 12.8 13.2 12.9 19.0 21.2 21.7 23.7 21.5 16.5 11.1 12.6 16.6 1976 12.4 10.9 10.1 18.6 19.8 20.5 ****** 21.9 20.4 15.0 8.2 10.4 ****** 1977 13.3 9.2 14.2 15.9 17.9 19.1 19.3 18.1 17.2 13.0 13.0 15.8 15.5 1978 15.6 13.4 14.9 15.7 19.6 19.5 17.0 19.1 18.9 16.3 12.8 15.6 16.5 1979 12.5 15.0 16.0 15.9 19.3 18.5 18.2 17.4 19.8 15.8 17.1 15.7 16.8 1980 15.7 14.3 14.8 15.4 19.0 18.4 18.4 17.7 19.4 15.8 16.5 16.2 16.8 1981 13.9 14.8 15.5 15.0 17.4 19.3 18.3 17.8 19.6 16.3 17.6 15.9 16.8 1982 14.8 14.2 15.3 15.0 19.2 18.8 17.9 17.6 18.6 16.8 15.9 15.9 16.7 1983 13.9 12.7 16.5 16.0 19.0 18.2 15.2 18.0 19.4 21.1 18.8 15.0 17.0 1984 15.2 14.9 15.6 15.8 18.9 19.2 18.4 18.1 19.8 17.7 17.7 15.4 17.2 1985 14.7 14.9 16.9 16.9 19.9 20.5 13.5 10.3 17.0 16.1 12.4 10.2 15.3 1986 ****** ****** ****** 11.2 16.5 ****** 16.5 16.2 19.6 16.7 11.7 9.6 ****** 1987 13.5 14.4 12.3 15.3 15.6 18.1 16.5 15.9 17.0 14.9 11.1 12.9 14.8 1988 8.9 11.9 13.5 13.3 17.8 19.2 15.0 17.1 17.2 17.0 15.6 12.7 14.9 1989 12.2 12.6 12.2 14.8 16.6 18.4 15.6 15.9 17.6 18.4 12.7 11.2 14.8 1990 10.5 12.2 13.8 14.3 16.3 16.6 14.3 15.5 15.1 15.2 14.1 10.9 14.1 1991 8.4 9.0 8.6 13.9 11.5 14.3 15.5 15.6 15.5 13.7 ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 8.4 8.8 10.5 12.2 13.8 15.6 15.4 ****** ****** ****** 12.8 13.3 ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 14.0 11.0 10.4 12.3 16.9 19.2 ****** 19.0 19.4 19.3 16.1 10.4 ****** 1996 10.0 11.3 ****** ****** ****** ****** ****** 17.0 18.1 18.5 17.5 16.4 ****** 1997 14.0 13.6 11.6 14.4 16.6 19.3 18.4 18.7 19.9 17.5 13.7 13.6 15.9 1998 12.5 12.1 12.2 15.2 17.3 17.5 16.7 17.5 19.2 19.7 20.0 18.7 16.5 1999 12.1 12.5 14.3 17.7 20.2 20.7 18.8 17.3 19.6 19.0 17.7 16.7 17.2 2000 13.2 14.6 16.7 17.6 20.8 19.8 17.5 18.4 18.9 17.3 12.4 12.2 16.6 2001 13.1 13.2 14.9 18.6 18.4 18.6 20.1 18.8 20.3 ****** ****** ****** ****** 2002 ****** ****** ****** ****** ****** 17.4 17.6 17.4 19.6 20.4 17.7 14.9 ****** 2003 14.0 12.4 12.4 14.5 16.5 18.0 18.0 18.3 18.9 18.8 17.8 13.5 16.1 MEAN 12.8 13.0 13.9 15.3 18.1 19.0 17.4 17.6 18.5 17.3 15.4 14.1 16.0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 5 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 ****** ****** ****** ****** ****** ****** ****** 8.57 6.06 4.54 3.72 4.16 ****** 1965 5.33 5.54 5.61 6.38 9.46 10.16 10.93 8.17 7.11 6.42 5.71 3.74 7.05 1966 4.21 4.39 4.89 5.91 7.03 8.79 8.45 8.69 6.88 6.95 4.18 3.86 6.19 1967 4.07 4.86 4.59 5.16 6.75 6.45 8.96 7.29 7.48 6.76 6.03 4.35 6.06 1968 3.99 4.67 5.75 6.21 7.82 8.50 8.42 8.03 6.34 5.84 5.46 5.18 6.35 1969 5.18 4.65 5.84 7.02 8.69 10.00 10.19 9.96 7.72 7.18 5.44 4.42 7.19 1970 4.45 5.04 5.59 6.46 8.07 9.87 11.34 13.21 9.34 6.05 4.45 4.53 7.37 1971 3.41 4.60 4.54 6.62 7.74 7.71 8.64 9.51 6.81 4.78 5.15 4.50 6.17 1972 4.76 4.20 6.08 6.20 6.19 7.82 9.02 8.08 7.39 6.20 5.40 3.66 6.25 1973 3.72 4.77 5.17 4.91 6.82 8.56 10.98 8.06 6.14 6.50 5.99 4.23 6.32 1974 5.19 5.02 11.00 7.86 10.88 13.23 12.51 12.21 9.56 7.85 4.70 5.00 8.75 1975 4.29 5.45 4.84 8.83 11.46 12.53 13.34 10.17 10.03 7.00 5.79 3.87 8.13 1976 3.85 5.92 7.94 10.14 9.99 13.22 13.81 12.31 11.58 8.31 6.78 4.36 9.02 1977 3.83 8.01 8.54 7.17 9.24 11.41 13.28 10.37 10.42 11.28 6.11 5.29 8.75 1978 4.08 4.78 6.22 6.25 8.79 9.77 11.94 8.06 6.85 6.62 5.47 4.69 6.96 1979 5.43 4.75 4.80 5.78 7.15 8.79 8.43 8.40 6.81 6.92 4.11 4.25 6.30 1980 4.19 4.65 5.72 6.10 7.16 8.85 8.81 8.13 6.62 6.98 4.88 4.55 6.39 1981 4.58 5.04 5.36 6.54 6.95 7.74 8.16 8.35 6.07 6.82 4.22 4.23 6.17 1982 4.30 4.98 5.83 6.13 6.30 8.28 8.42 8.75 6.95 6.65 4.59 4.31 6.29 1983 4.46 4.79 5.31 5.95 6.52 8.47 8.30 8.66 6.51 5.32 4.38 3.96 6.05 1984 3.91 4.23 5.03 5.38 6.99 7.92 8.23 8.81 6.89 5.91 4.16 4.91 6.03 1985 4.43 4.62 4.76 5.66 6.99 7.84 12.86 11.35 7.70 7.30 7.06 4.97 7.13 1986 ****** ****** ****** 7.99 8.35 8.07 8.26 7.65 5.85 5.83 5.84 4.60 ****** 1987 3.76 4.45 5.85 6.47 8.39 7.49 7.69 8.50 7.53 5.86 5.25 3.43 6.22 1988 3.94 4.96 5.99 7.33 7.82 7.67 11.67 8.36 8.11 5.31 4.25 4.27 6.64 1989 3.34 3.78 4.96 6.85 8.16 7.55 9.01 7.75 6.59 5.61 6.22 4.61 6.20 1990 4.18 4.63 4.60 5.72 6.06 7.31 8.33 7.62 6.59 6.95 5.24 4.06 5.94 1991 4.43 4.29 5.65 6.55 6.34 7.02 8.92 7.01 6.24 6.34 ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 4.83 4.94 5.34 6.71 7.77 5.52 5.85 ****** ****** ****** 5.62 4.41 ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 4.26 5.00 5.79 8.08 8.56 9.02 11.62 9.00 7.54 7.42 5.75 5.06 7.26 1996 4.59 5.16 6.38 7.52 9.81 12.96 11.55 10.20 7.73 6.17 4.32 3.71 7.51 1997 3.86 3.95 5.11 7.16 8.27 9.66 13.55 12.11 9.21 7.42 5.29 4.03 7.47 1998 4.10 4.89 7.03 9.68 12.31 11.36 14.15 13.25 11.74 6.16 3.82 3.23 8.48 1999 3.70 5.32 4.82 6.56 8.35 11.21 11.63 9.54 8.65 5.41 3.94 3.07 6.85 2000 3.87 3.67 4.33 7.47 8.75 12.09 11.78 11.56 9.71 6.21 5.19 4.89 7.46 2001 3.57 4.31 5.34 6.24 9.50 10.34 11.29 11.00 8.42 6.68 4.29 4.56 7.13 2002 3.76 4.59 ****** ****** ****** 9.13 7.92 8.98 8.82 6.01 4.89 4.20 ****** 2003 3.60 5.16 5.89 7.33 8.96 11.56 14.14 9.87 9.49 6.30 4.66 4.40 7.61 MEAN 4.21 4.84 5.73 6.79 8.18 9.30 10.34 9.40 7.83 6.54 5.10 4.32 6.88 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 6 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 ****** ****** ****** ****** ****** ****** ****** 6.73 5.40 4.71 4.29 4.09 ****** 1965 5.09 4.06 3.79 4.89 7.07 6.46 8.13 7.18 5.15 6.12 5.24 4.07 5.61 1966 4.56 5.17 3.94 5.35 5.67 7.11 7.35 8.14 7.29 6.24 4.94 4.72 5.87 1967 4.41 5.01 4.40 5.33 6.71 6.84 8.50 7.56 8.21 6.86 6.87 5.10 6.32 1968 4.15 4.58 5.36 6.75 7.78 7.55 8.06 9.31 7.52 6.85 6.14 5.61 6.64 1969 5.56 4.29 7.12 9.27 9.44 11.36 12.65 10.21 10.20 8.75 8.73 7.46 8.75 1970 6.07 6.58 6.66 9.00 9.65 12.46 12.67 14.83 12.54 11.50 7.76 6.43 9.68 1971 5.25 5.48 5.06 7.56 8.26 7.22 8.26 9.92 7.69 6.16 5.31 5.17 6.78 1972 5.52 5.19 6.34 8.33 7.61 8.57 8.89 9.19 8.00 7.31 7.45 4.67 7.26 1973 4.66 5.63 5.65 6.32 7.43 9.02 14.32 11.97 7.65 8.64 8.20 7.07 8.05 1974 7.62 7.25 15.17 13.20 17.08 18.92 20.77 19.28 15.44 11.84 8.89 7.49 13.58 1975 6.85 8.68 8.70 14.06 24.39 22.81 24.73 21.55 16.79 10.49 7.83 7.00 14.49 1976 6.47 8.59 11.84 15.55 12.99 21.51 23.63 20.72 17.06 13.08 8.03 6.56 13.83 1977 6.88 10.49 10.43 9.28 11.66 12.52 19.17 19.91 17.86 20.77 11.92 12.56 13.62 1978 9.49 9.35 4.79 4.74 7.01 6.11 11.49 7.16 6.49 5.52 6.29 5.90 7.03 1979 5.63 5.63 3.98 5.65 5.53 7.06 7.51 8.04 7.10 6.09 4.89 5.38 6.04 1980 4.84 6.41 6.23 5.75 5.91 7.32 7.57 7.34 7.02 5.31 4.81 5.43 6.16 1981 5.79 5.51 5.60 7.17 6.10 6.79 5.91 7.89 6.65 5.62 4.85 4.52 6.03 1982 5.19 5.50 5.67 5.41 5.63 7.02 7.46 8.05 7.04 6.36 5.22 5.20 6.15 1983 4.93 5.64 4.54 5.59 5.91 6.89 7.91 7.10 5.32 6.05 5.90 4.79 5.88 1984 4.96 5.53 5.52 5.10 6.43 7.30 7.20 7.78 6.97 5.31 4.45 4.85 5.95 1985 4.67 4.74 4.44 5.11 6.66 7.63 13.34 9.46 9.11 10.25 8.00 6.62 7.50 1986 ****** ****** ****** 11.22 9.00 8.43 8.40 8.40 6.64 6.62 6.90 5.96 ****** 1987 4.90 5.06 5.57 6.30 7.97 5.81 7.58 8.56 6.52 6.19 6.55 4.40 6.28 1988 4.78 6.07 6.33 7.74 6.75 6.79 10.23 7.46 7.00 5.79 5.14 5.13 6.60 1989 4.29 4.39 5.33 7.21 7.05 7.32 7.77 8.76 7.73 6.43 7.60 5.64 6.63 1990 5.26 5.00 4.07 6.05 5.70 6.36 8.06 7.51 6.82 5.77 4.71 4.39 5.81 1991 5.30 5.09 7.26 8.44 8.37 8.98 10.84 9.22 9.55 6.14 ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 5.31 5.32 4.91 5.66 4.37 3.19 4.73 ****** ****** ****** 7.96 4.89 ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 5.08 5.40 6.42 7.25 6.90 7.45 8.16 8.08 8.05 6.81 6.93 6.15 6.89 1996 5.01 5.92 7.47 8.95 9.30 9.91 10.02 8.67 6.19 5.55 4.11 4.84 7.16 1997 4.86 4.40 5.26 6.14 5.84 5.38 11.41 13.50 13.25 13.36 8.90 7.06 8.28 1998 6.24 7.02 10.38 13.77 19.19 12.73 18.04 12.85 14.63 8.39 5.95 5.12 11.19 1999 5.23 6.40 6.12 4.34 7.51 7.12 10.36 5.71 5.68 5.02 6.18 5.09 6.23 2000 5.29 4.68 6.87 5.08 5.78 11.58 12.92 11.48 6.66 5.13 5.35 5.32 7.18 2001 3.87 4.40 6.84 7.95 6.43 7.54 10.23 9.56 6.40 10.12 6.26 5.92 7.13 2002 4.96 6.21 ****** ****** ****** 6.89 6.81 8.80 10.95 5.19 6.76 5.54 ****** 2003 4.64 5.20 6.19 8.61 6.41 8.59 12.02 15.34 6.75 4.35 4.76 5.15 7.33 MEAN 5.38 5.83 6.41 7.62 8.38 8.99 10.90 10.36 8.80 7.59 6.49 5.71 7.70 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 7 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 ****** ****** ****** ****** ****** ****** ****** 7.44 7.47 5.17 6.37 4.71 ****** 1965 5.26 4.97 5.24 5.90 6.71 9.02 11.18 8.95 8.01 7.47 7.42 6.50 7.22 1966 6.22 5.88 4.76 5.86 5.25 6.95 7.49 7.58 6.40 6.12 4.83 4.92 6.02 1967 4.45 5.00 4.40 5.10 6.38 6.62 8.09 7.21 6.74 6.14 7.09 5.15 6.03 1968 4.63 4.83 4.94 5.85 7.38 8.15 7.62 8.88 8.59 7.55 6.61 5.79 6.74 1969 5.68 4.88 6.21 8.87 9.92 10.38 11.85 8.24 9.96 8.79 7.43 6.03 8.19 1970 5.20 5.92 6.03 7.32 8.79 11.03 11.37 12.76 10.97 8.51 6.42 5.47 8.32 1971 4.78 4.82 4.38 6.08 6.88 6.17 7.03 7.73 6.43 5.27 4.72 4.97 5.77 1972 5.04 4.17 6.27 7.03 6.40 7.53 7.83 7.60 6.72 6.72 5.80 4.26 6.28 1973 4.31 5.14 5.60 6.98 7.28 8.65 12.55 8.50 6.49 6.89 7.62 6.22 7.18 1974 5.95 6.23 12.22 11.20 11.85 15.99 15.39 13.07 10.14 8.35 6.77 6.72 10.32 1975 5.91 7.32 6.73 11.24 14.84 13.91 13.73 12.09 10.60 8.49 6.80 6.23 9.82 1976 5.90 6.83 8.11 12.95 10.46 16.87 22.03 12.37 12.55 10.91 7.10 5.99 11.01 1977 5.93 8.87 8.45 7.45 8.43 10.60 13.43 12.45 12.71 12.56 8.50 9.53 9.91 1978 7.04 7.22 5.86 5.99 7.13 8.76 12.22 8.83 6.83 5.61 5.62 5.99 7.26 1979 5.39 5.86 4.81 5.74 5.07 7.16 8.20 7.42 6.16 5.82 4.88 4.95 5.95 1980 4.77 6.10 6.00 5.75 5.45 7.21 7.36 7.03 6.14 5.65 4.85 5.41 5.98 1981 5.57 6.09 5.54 6.54 5.65 6.86 7.33 7.34 6.16 5.85 4.98 4.91 6.07 1982 4.98 6.21 5.72 5.60 5.35 6.77 7.50 7.56 6.43 6.21 5.40 5.31 6.09 1983 4.82 6.03 4.70 5.76 5.19 6.79 6.94 7.75 7.48 5.25 5.30 4.58 5.88 1984 4.69 5.31 5.26 5.04 5.81 6.97 7.36 7.39 5.78 6.00 5.92 4.72 5.85 1985 4.67 5.06 4.75 5.00 5.94 8.72 11.62 9.82 9.69 7.47 7.68 5.77 7.18 1986 ****** ****** ****** 6.64 8.37 7.72 7.62 7.91 6.95 6.65 6.39 5.87 ****** 1987 5.09 4.69 5.24 5.74 7.02 5.63 7.25 8.14 6.45 6.11 5.60 4.11 5.92 1988 4.43 5.16 5.54 8.11 6.49 7.54 9.97 7.46 8.27 6.56 5.31 5.55 6.70 1989 4.02 4.12 5.12 6.90 7.16 7.03 7.94 8.64 7.64 5.87 7.33 5.24 6.42 1990 4.82 4.80 3.48 5.50 5.49 6.24 7.05 6.56 5.73 4.46 3.48 3.49 5.09 1991 4.94 4.28 5.98 6.49 6.17 6.37 8.40 6.43 7.20 4.88 ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 5.39 5.54 5.65 6.73 5.24 5.04 5.00 ****** ****** ****** 6.23 4.67 ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 4.90 5.47 6.63 7.91 8.28 10.01 7.58 10.63 6.82 7.45 7.86 6.36 7.49 1996 4.92 5.93 7.04 8.66 9.41 11.24 12.32 13.44 9.31 5.89 5.33 4.51 8.17 1997 4.78 5.03 5.49 7.63 7.23 7.33 10.93 11.16 10.36 10.31 7.82 4.86 7.74 1998 4.62 5.46 6.21 9.74 13.91 12.51 14.90 13.95 15.10 8.41 5.40 3.81 9.50 1999 4.81 6.19 6.39 6.76 8.11 8.65 11.01 8.24 8.04 6.45 6.14 5.07 7.16 2000 6.17 6.43 8.30 7.49 6.43 11.69 11.84 10.94 10.73 7.51 6.05 5.17 8.23 2001 4.40 4.98 6.51 8.53 8.67 8.95 10.87 9.86 8.68 8.89 6.30 6.23 7.74 2002 5.29 5.98 ****** ****** ****** 7.84 7.06 8.33 10.38 6.45 5.76 4.97 ****** 2003 4.92 5.69 6.44 8.16 8.02 9.57 12.79 8.46 8.09 7.43 6.34 5.11 7.59 MEAN 5.14 5.63 6.00 7.18 7.57 8.77 10.02 9.14 8.33 7.04 6.21 5.39 7.20 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 8 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. ABSOLUTE OF MINIMUM TEMPERATURE WITH DAY YEAR JAN. DAY FEB. DAY MAR. DAY APR. DAY MAY DAY JUNE DAY JULY DAY AUG. DAY SEP. DAY OCT. DAY NOV. DAY DEC. DAY ANNUAL 1964 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** 12.0 18 7.0 26 2.0 19 -3.0 29 -9.0 5 ***** 1965 -4.0 7 -1.0 5 0.0 4 1.0 8 5.0 4 11.0 4 13.0 13 12.0 15 7.5 26 5.0 24 0.0 13 -7.0 23 -7.0 1966 -2.0 1 -0.5 12 0.5 4 3.0 5 8.5 2 13.0 19 14.0 6 11.0 20 10.5 22 7.5 25 -6.0 29 -3.0 3 -6.0 1967 -5.5 24 -3.0 3 0.0 30 -0.5 2 5.0 1 9.0 3 12.0 2 13.5 29 9.0 26 3.0 29 0.0 29 -5.0 26 -5.5 1968 -5.0 20 -5.5 7 1.5 26 3.5 5 6.5 2 11.5 11 14.0 24 14.5 30 9.0 26 7.5 22 1.5 21 0.0 10 -5.5 1969 -2.5 31 -4.0 1 4.0 2 3.5 15 10.0 9 14.0 11 15.0 15 15.0 23 10.5 16 7.5 29 -1.0 24 -1.5 12 -4.0 1970 -5.0 30 -1.0 4 1.0 8 6.0 1 6.5 9 15.0 13 16.5 27 17.5 1 9.0 30 5.0 26 1.0 30 -5.0 17 -5.0 1971 -5.5 26 -5.5 3 1.0 1 4.0 20 8.0 1 14.0 5 17.5 1 17.0 14 10.0 23 8.0 28 0.1 14 -3.0 24 -5.5 1972 -5.0 2 -5.0 25 0.0 3 6.0 1 6.0 4 10.0 1 16.0 13 14.0 9 13.0 27 5.0 12 -2.0 25 -7.0 25 -7.0 1973 -9.0 9 -2.0 3 -3.0 12 4.0 1 8.5 4 11.5 1 17.5 3 15.5 27 12.0 10 6.5 1 1.0 29 -4.0 16 -9.0 1974 -6.0 25 -3.0 1 5.0 1 6.5 1 10.0 2 14.0 1 17.5 30 10.0 1 6.0 22 4.5 30 -1.0 20 -4.0 19 -6.0 1975 -5.0 6 1.0 1 -4.0 10 7.5 3 8.0 1 12.0 4 14.5 3 8.0 1 8.5 6 5.0 31 1.5 1 -8.0 28 -8.0 1976 -5.5 20 0.0 5 4.5 1 9.0 1 1.5 2 13.5 4 ***** ** 10.0 14 10.0 1 5.0 6 3.0 24 -4.0 20 ***** 1977 -6.0 12 2.5 1 8.0 6 9.0 7 11.0 7 16.0 1 17.0 11 17.0 1 16.5 6 13.5 1 7.5 14 1.0 21 -6.0 1978 -4.0 14 -2.5 5 0.0 6 2.0 8 7.0 7 11.5 4 14.0 2 12.0 22 6.5 6 7.5 25 -5.0 27 -2.5 7 -5.0 1979 -4.0 7 -1.0 12 -2.0 21 3.0 5 8.5 2 13.0 22 11.0 6 11.0 20 6.0 5 7.5 25 -6.0 29 -3.0 3 -6.0 1980 -5.5 24 0.0 25 0.5 4 0.8 22 8.5 2 13.0 19 11.0 5 11.0 20 7.0 5 7.5 25 0.0 26 -3.0 8 -5.5 1981 -5.0 24 -1.0 25 1.5 3 4.0 5 8.5 11 13.0 19 11.0 6 11.5 18 6.0 5 7.5 25 -5.0 27 -5.0 13 -5.0 1982 -5.0 24 0.0 10 2.0 21 5.0 5 8.0 1 12.5 19 11.0 6 11.0 20 10.5 22 6.0 6 -5.0 29 -3.0 3 -5.0 1983 -4.0 12 0.0 10 2.0 17 3.0 5 8.5 2 13.0 23 17.5 1 13.5 31 7.0 26 5.0 24 3.0 10 -4.5 22 -4.5 1984 -4.0 13 -4.5 1 2.0 17 4.5 5 8.5 1 12.5 1 11.0 6 14.0 16 6.5 6 2.0 19 1.0 28 -2.5 7 -4.5 1985 -3.5 11 -0.5 12 1.0 4 3.0 5 8.0 23 11.5 1 23.0 3 20.0 13 13.0 30 7.5 25 5.0 30 -5.0 30 -5.0 1986 ***** ** ***** ** ***** ** 6.5 8 12.5 11 ***** ** 17.5 1 14.0 11 10.0 13 9.5 26 1.5 17 -3.0 13 ***** 1987 -3.5 15 -0.5 23 1.5 15 2.5 9 14.5 14 16.0 2 17.0 4 18.0 27 12.0 28 6.0 18 1.0 30 -2.5 3 -3.5 1988 -5.0 22 -1.0 4 3.0 11 5.0 7 12.0 17 14.0 25 16.5 1 14.5 27 13.5 2 8.0 28 -1.0 26 -4.5 30 -5.0 1989 -6.5 19 -6.5 15 -1.0 31 3.5 1 7.5 1 14.0 13 16.5 25 17.0 16 11.5 25 7.0 31 1.5 25 -2.5 19 -6.5 1990 -3.0 26 -2.0 12 2.0 21 5.5 6 11.5 14 16.0 3 20.0 20 18.5 18 15.0 29 8.5 29 2.5 30 -5.0 28 -5.0 1991 -5.0 7 -2.5 16 2.5 16 7.0 13 10.0 21 17.0 15 19.0 3 16.5 28 11.4 28 9.0 30 ***** ** ***** ** ***** 1992 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1993 -5.5 16 -2.0 8 1.5 23 7.0 14 10.5 1 15.0 5 17.0 16 ***** ** ***** ** ***** ** 3.0 30 0.5 13 ***** 1994 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1995 -3.5 24 -2.5 11 -0.5 6 5.0 5 7.5 11 11.2 28 16.0 1 14.5 10 10.0 22 5.0 25 0.0 27 -1.0 9 -3.5 1996 -7.0 16 1.0 1 ***** ** ***** ** ***** ** ***** ** ***** ** 14.0 7 10.5 24 0.0 22 0.0 12 -4.0 17 ***** 1997 -4.5 5 -5.5 8 0.0 1 1.5 12 7.5 11 13.5 1 18.0 1 12.5 31 11.0 30 5.0 29 -1.0 26 -2.5 16 -5.5 1998 -7.0 14 -3.0 14 0.0 3 4.5 9 9.0 2 12.5 2 17.5 28 15.5 28 10.5 20 4.5 29 0.0 21 -4.5 8 -7.0 1999 -5.5 7 -2.0 2 -2.0 7 4.0 11 9.0 5 15.0 1 15.5 3 15.0 28 11.0 27 6.0 31 0.0 20 -5.5 20 -5.5 2000 -4.0 1 -3.0 12 0.0 4 6.5 4 10.5 13 16.0 1 17.0 1 15.0 5 10.5 25 6.0 26 0.0 27 -3.0 19 -4.0 2001 -7.0 30 -4.5 2 2.5 1 7.0 10 11.0 2 15.0 21 16.5 18 14.5 17 10.5 26 ***** ** ***** ** ***** ** ***** 2002 ***** ** ***** ** ***** ** ***** ** ***** ** 15.0 14 14.5 11 17.0 31 12.5 20 5.5 30 -2.5 26 -5.0 31 ***** 2003 -4.0 2 -1.0 2 -1.5 3 7.5 1 12.5 1 17.0 11 18.0 3 17.0 16 13.0 28 6.0 25 -1.5 26 -2.5 16 -4.0 LOW. -9.0 9 -6.5 15 -4.0 10 -0.5 2 1.5 2 9.0 3 11.0 6 8.0 1 6.0 22 0.0 22 -6.0 29 -9.0 5 -9.0 YEAR 1973 1989 1975 1967 1976 1967 1979 1975 1974 1996 1966 1964 1964 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 9 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. ABSOLUTE OF MAXIMUM TEMPERATURE WITH DAY YEAR JAN. DAY FEB. DAY MAR. DAY APR. DAY MAY DAY JUNE DAY JULY DAY AUG. DAY SEP. DAY OCT. DAY NOV. DAY DEC. DAY ANNUAL 1964 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** 39.0 6 35.5 6 32.0 1 25.0 17 17.0 25 ***** 1965 15.0 25 20.0 13 25.0 12 28.0 27 35.0 19 37.5 21 38.0 14 37.0 1 35.5 4 30.0 6 26.5 8 20.5 3 38.0 1966 22.0 27 23.0 1 27.0 12 29.5 30 35.5 24 38.0 30 38.5 25 37.5 3 35.0 1 31.0 3 23.5 1 21.0 2 38.5 1967 20.5 18 19.5 26 22.5 7 27.0 21 34.0 17 37.5 25 39.5 14 38.0 5 35.5 4 29.5 11 25.0 1 18.0 18 39.5 1968 19.0 6 17.0 28 26.5 14 27.5 17 33.0 24 37.5 27 38.0 7 38.0 19 36.0 4 32.5 1 25.5 1 22.0 1 38.0 1969 15.5 23 19.0 19 32.0 21 35.0 25 35.0 18 38.0 30 40.5 25 39.5 5 35.0 10 31.5 1 22.0 3 19.5 13 40.5 1970 16.0 6 20.0 21 27.0 31 31.0 18 39.0 23 40.0 28 39.5 3 41.0 10 37.5 1 33.0 1 27.0 2 21.0 1 41.0 1971 18.0 4 20.0 22 23.5 14 29.5 24 35.0 27 38.0 24 38.0 8 38.0 7 36.5 1 28.0 1 25.5 1 20.5 1 38.0 1972 13.5 29 15.5 18 21.5 29 26.5 18 33.0 29 38.0 24 39.5 9 36.5 1 35.0 7 32.0 1 25.5 1 21.5 2 39.5 1973 17.0 28 24.0 21 26.5 3 31.0 28 35.0 24 39.5 15 39.5 14 35.5 2 28.0 1 27.0 15 24.5 13 20.0 1 39.5 1974 15.0 10 15.0 15 25.5 18 27.5 28 34.0 12 38.5 27 39.5 2 34.0 2 32.5 1 25.0 1 23.0 3 16.0 3 39.5 1975 15.0 1 18.0 7 18.0 5 25.0 28 34.5 24 37.0 18 38.5 4 36.5 6 34.5 2 25.5 1 16.0 17 15.0 29 38.5 1976 15.0 1 18.5 28 20.5 19 31.5 26 35.2 11 39.0 27 38.5 2 36.2 14 42.0 22 29.0 1 19.5 1 15.0 1 42.0 1977 15.0 31 25.0 26 30.0 19 31.0 19 33.0 17 37.0 2 39.5 9 39.0 15 36.0 1 32.0 4 25.5 16 23.0 11 39.5 1978 17.5 23 19.0 18 25.0 13 25.5 30 35.0 19 37.5 22 37.0 28 36.5 1 34.5 1 31.0 3 24.5 2 21.0 2 37.5 1979 20.0 18 23.0 28 25.0 13 29.0 30 35.5 24 36.5 12 38.5 25 37.5 3 35.0 1 31.0 3 23.5 1 21.0 2 38.5 1980 20.5 18 23.0 1 24.0 6 28.0 20 35.0 23 37.0 13 38.5 25 37.5 3 35.0 1 31.0 3 23.0 1 21.0 2 38.5 1981 20.0 18 23.0 1 23.0 11 26.0 25 34.5 24 38.0 30 38.5 25 37.5 7 34.5 11 30.5 3 23.5 1 20.0 2 38.5 1982 20.0 18 23.0 1 24.0 13 26.0 24 35.5 24 37.0 14 38.5 25 38.5 6 35.0 1 31.0 3 23.5 8 20.0 2 38.5 1983 20.0 18 23.0 1 25.0 13 28.0 16 35.0 23 37.5 29 38.0 8 38.5 6 35.5 6 32.0 1 27.2 1 20.5 2 38.5 1984 18.0 24 22.0 27 25.5 13 27.0 23 36.0 26 38.0 30 38.5 25 37.5 3 35.5 1 31.5 1 25.0 17 19.5 10 38.5 1985 20.0 17 21.5 28 25.0 15 29.0 30 35.0 30 39.5 28 40.0 5 38.5 3 33.5 1 31.5 2 22.5 1 13.5 1 40.0 1986 ***** ** ***** ** ***** ** 25.5 28 36.5 27 41.5 25 39.0 19 37.5 1 35.0 28 33.5 5 25.0 3 19.5 30 ***** 1987 19.5 26 21.5 2 22.0 8 33.5 26 38.5 21 39.0 6 40.5 24 38.5 10 38.0 7 31.0 6 25.5 5 19.5 20 40.5 1988 16.0 7 18.5 22 25.0 28 30.0 19 35.5 31 39.5 14 41.0 3 40.0 8 37.5 10 31.0 7 26.0 6 19.0 16 41.0 1989 16.5 22 19.5 21 23.0 27 30.5 17 37.5 28 41.0 27 41.5 9 38.0 5 36.5 9 32.5 10 25.0 1 18.5 4 41.5 1990 16.5 25 18.0 5 27.0 13 30.0 15 37.0 21 40.0 30 40.0 1 39.0 13 36.5 6 31.5 2 25.0 5 19.0 11 40.0 1991 15.5 21 16.0 19 25.0 24 31.0 29 32.5 11 37.0 13 40.0 13 39.0 11 37.0 1 28.5 9 ***** ** ***** ** ***** 1992 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1993 17.5 30 18.0 28 20.5 19 28.0 19 35.0 27 37.5 19 39.0 8 ***** ** ***** ** ***** ** 26.0 1 19.5 22 ***** 1994 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1995 17.0 21 18.0 22 17.0 11 26.5 19 31.0 24 39.0 14 ***** ** 38.5 15 37.0 1 32.5 2 24.0 1 15.0 3 ***** 1996 14.5 31 21.5 10 19.0 25 25.0 3 31.5 18 36.5 28 37.5 31 36.5 1 34.5 4 32.0 1 24.5 6 17.5 7 37.5 1997 16.5 15 18.0 21 19.0 3 25.5 28 34.5 28 38.5 29 41.5 21 40.5 1 36.0 3 33.0 2 23.5 10 17.0 9 41.5 1998 14.5 5 20.5 10 27.0 29 29.0 21 35.0 28 37.5 8 41.0 15 39.0 21 36.5 11 33.0 6 25.5 1 21.5 3 41.0 1999 18.5 1 19.5 20 25.0 27 28.0 29 34.5 23 39.5 29 40.5 5 39.0 7 37.5 2 30.5 12 27.0 1 18.5 11 40.5 2000 19.5 6 21.0 27 23.5 29 32.0 17 38.5 31 40.5 30 42.0 11 38.0 5 37.0 11 32.5 1 26.0 1 20.5 5 42.0 2001 15.0 23 17.5 18 24.0 30 32.0 27 38.5 18 39.0 30 42.5 27 38.0 11 36.5 2 34.5 3 27.0 4 19.5 10 42.5 2002 15.5 5 19.5 20 ***** ** ***** ** ***** ** 37.5 15 39.0 14 39.5 5 38.5 4 32.5 1 25.0 12 21.5 11 ***** 2003 17.5 14 20.0 24 22.5 31 29.5 30 33.5 19 40.0 21 41.5 6 39.5 1 37.5 1 31.0 1 25.5 1 19.5 22 41.5 HIG. 22.0 27 25.0 26 32.0 21 35.0 25 39.0 23 41.5 25 42.5 27 41.0 10 42.0 22 34.5 3 27.2 1 23.0 11 42.5 YEAR 1966 1977 1969 1969 1970 1986 2001 1970 1976 2001 1983 1977 2001 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 10 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. 24 HOUR MAXIMUM PRECIPITATION. YEAR JAN. DAY FEB. DAY MAR. DAY APR. DAY MAY DAY JUNE DAY JULY DAY AUG. DAY SEP. DAY OCT. DAY NOV. DAY DEC. DAY ANNUAL 1964 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 18.5 16 ***** 1965 50.5 10 20.0 1 0.0 ** 2.0 2 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 50.5 1966 5.0 14 8.0 24 0.0 ** 4.5 12 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 1.0 27 8.0 1967 7.0 4 20.5 18 0.0 ** 7.0 25 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 17.0 17 12.0 8 20.5 1968 12.5 16 45.0 13 12.0 8 14.0 28 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 3.5 18 30.0 7 45.0 1969 11.5 25 5.5 12 17.0 19 16.5 6 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 8.0 31 10.0 8 0.0 ** 17.0 1970 15.0 12 6.5 16 8.0 6 8.0 23 0.0 ** 0.0 ** 0.0 ** 8.0 16 0.0 ** 0.0 ** 0.0 ** 5.5 14 15.0 1971 6.5 23 45.0 14 0.0 ** 6.0 7 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 3.0 9 7.0 20 45.0 1972 35.5 17 18.0 19 30.0 17 12.5 20 5.0 10 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 2.5 5 35.5 1973 17.5 2 0.0 ** 20.0 16 0.0 ** 0.0 ** 0.0 ** 13.5 19 0.0 ** 0.0 ** 0.0 ** 0.0 ** 12.0 30 20.0 1974 22.0 25 17.0 12 44.0 2 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 20.0 26 44.0 1975 14.0 18 0.0 ** 4.5 29 26.0 23 16.0 11 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 5.0 3 26.0 1976 9.0 11 22.0 6 20.0 13 5.0 22 0.0 ** 0.0 ** 10.3 26 0.0 ** 0.0 ** 11.5 28 25.0 3 18.0 31 25.0 1977 31.5 7 0.0 ** 5.0 26 12.5 2 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 6.0 1 0.0 ** 31.5 1978 64.5 11 22.0 26 49.0 7 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 25.0 18 11.0 4 64.5 1979 41.0 9 14.0 11 26.0 10 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 18.0 30 41.0 1980 15.5 24 44.5 12 27.0 20 12.0 15 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 21.0 16 44.5 1981 26.0 26 17.0 24 28.0 2 5.0 18 12.0 1 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 12.0 31 28.0 1982 8.0 17 18.0 9 17.0 19 8.0 29 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 5.0 29 12.0 1 7.0 6 18.0 1983 48.0 20 18.0 11 23.0 7 11.0 7 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 2.0 27 48.0 1984 12.0 29 10.0 27 23.0 20 0.0 ** 17.0 9 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 11.0 11 23.0 1985 20.0 3 7.0 2 0.0 ** 0.0 ** 9.0 14 0.0 ** 0.5 31 0.0 ** 0.0 ** 0.0 ** 0.0 ** 40.5 28 40.5 1986 ***** ** ***** ** ***** ** 8.0 9 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 4.5 23 145.5 2 ***** 1987 0.0 ** 5.0 18 12.5 30 2.5 6 0.0 ** 0.0 ** 0.0 ** 10.0 16 0.0 ** 4.0 27 0.0 ** 7.5 29 12.5 1988 17.0 18 35.0 25 14.5 23 6.5 25 0.0 ** 0.0 ** 15.0 26 0.0 ** 0.0 ** 0.0 ** 0.0 ** 59.0 27 59.0 1989 3.0 3 1.5 1 10.0 29 15.0 30 0.5 1 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 21.0 8 15.0 5 21.0 1990 9.5 9 6.5 2 1.0 19 11.5 4 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 1.0 26 11.5 1991 33.0 23 11.5 21 13.0 7 9.0 5 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** ***** ** ***** ** ***** 1992 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1993 22.3 9 44.4 4 10.3 7 8.0 28 0.0 ** 0.0 ** 0.0 ** ***** ** ***** ** ***** ** 0.0 ** 2.0 25 ***** 1994 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1995 2.6 1 89.6 6 11.0 14 29.0 24 1.0 26 0.0 ** 4.4 23 0.0 ** 0.0 ** 5.0 23 0.0 ** 25.0 12 89.6 1996 4.5 18 35.5 5 16.5 7 7.4 15 0.0 ** 13.0 15 0.0 ** 0.0 ** 0.0 ** 0.0 ** 1.4 28 0.0 ** 35.5 1997 20.5 17 13.2 27 47.8 25 7.0 26 0.0 ** 0.0 ** 8.8 24 0.0 ** 0.0 ** 5.8 24 4.0 24 8.2 21 47.8 1998 15.0 6 46.2 12 20.8 19 2.0 23 0.0 ** 0.0 ** 1.5 27 1.0 24 0.0 ** 0.0 ** 0.0 ** 0.0 ** 46.2 1999 25.3 18 37.0 6 58.0 2 0.0 ** 0.0 ** 0.0 ** 0.5 10 0.0 ** 0.0 ** 0.0 ** 0.0 ** 1.2 13 58.0 2000 30.5 17 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 3.0 5 8.5 19 21.5 11 30.5 2001 9.8 9 15.0 11 11.0 15 0.0 ** 0.0 ** 0.0 ** 0.0 ** 1.0 12 0.0 ** 0.0 ** 0.0 ** 16.2 14 16.2 2002 26.2 12 27.0 15 ***** ** ***** ** ***** ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 1.0 2 8.2 21 ***** 2003 15.0 17 22.0 5 20.0 14 16.4 22 0.0 ** 0.0 ** 0.0 ** 12.0 1 0.0 ** 0.0 ** 0.0 ** 50.0 6 50.0 HIG. 64.5 11 89.6 6 58.0 2 29.0 24 17.0 9 13.0 15 15.0 26 12.0 1 0.0 ** 11.5 28 25.0 3 145.5 2 145.5 YEAR 1978 1995 1999 1995 1984 1996 1988 2003 **** 1976 1976 1986 1986 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 11 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MONTHLY TOTAL PRECIPITATION WITH SEASONAL PERCENT. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL SEASONAL-PERCENT ----------------------- 1964 ****** ****** ****** ****** ****** ****** ****** 0.0 0.0 0.0 0.0 43.9 ****** ***** ***** 0.0 100.0 1965 204.6 33.0 0.0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 241.6 98.3 1.7 0.0 0.0 1966 6.0 23.0 0.0 6.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 36.5 79.5 17.8 0.0 2.7 1967 13.0 57.0 0.0 7.0 0.0 0.0 0.0 0.0 0.0 0.0 41.5 18.0 136.5 51.3 5.1 0.0 43.6 1968 16.0 94.0 27.5 23.0 0.0 0.0 0.0 0.0 0.0 0.0 3.5 49.0 213.0 64.6 10.8 0.0 24.6 1969 51.0 7.5 22.0 55.0 0.0 0.0 0.0 0.0 0.0 8.0 18.5 0.0 162.0 49.7 34.0 0.0 16.4 1970 39.0 10.5 14.5 8.0 0.0 0.0 0.0 12.0 0.0 0.0 0.0 5.5 89.5 71.5 8.9 13.4 6.1 1971 12.5 57.5 0.0 15.1 0.0 0.0 0.0 0.0 0.0 0.0 5.0 28.0 118.1 59.3 12.8 0.0 27.9 1972 95.0 25.5 102.5 38.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 3.5 269.5 82.7 16.0 0.0 1.3 1973 49.0 0.0 24.5 0.0 0.0 0.0 23.0 0.0 0.0 0.0 0.0 22.0 118.5 62.0 0.0 19.4 18.6 1974 72.5 37.5 87.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 63.0 260.0 75.8 0.0 0.0 24.2 1975 33.0 0.0 13.5 51.5 30.0 0.0 0.0 0.0 0.0 0.0 0.0 22.0 150.0 31.0 54.3 0.0 14.7 1976 22.0 79.0 97.0 8.0 0.0 0.0 10.3 0.0 0.0 11.5 49.0 21.0 297.8 66.5 2.7 3.5 27.4 1977 63.0 0.0 11.0 17.0 0.0 0.0 0.0 0.0 0.0 0.0 12.0 0.0 103.0 71.8 16.5 0.0 11.7 1978 74.0 41.0 76.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 74.0 24.0 289.0 66.1 0.0 0.0 33.9 1979 99.0 22.0 74.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 51.0 246.0 79.3 0.0 0.0 20.7 1980 25.5 94.5 96.0 12.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26.0 254.0 85.0 4.7 0.0 10.2 1981 69.0 24.0 48.0 9.0 23.0 0.0 0.0 0.0 0.0 0.0 0.0 12.0 185.0 76.2 17.3 0.0 6.5 1982 25.5 39.5 61.0 19.0 0.0 0.0 0.0 0.0 0.0 5.0 25.0 20.0 195.0 64.6 9.7 0.0 25.6 1983 69.0 24.0 41.0 31.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 167.0 80.2 18.6 0.0 1.2 1984 18.0 10.0 85.0 0.0 30.0 0.0 0.0 0.0 0.0 0.0 0.0 37.0 180.0 62.8 16.7 0.0 20.6 1985 60.0 7.0 0.0 0.0 9.0 0.0 0.5 0.0 0.0 0.0 0.0 94.0 170.5 39.3 5.3 0.3 55.1 1986 ****** ****** ****** 20.0 0.0 0.0 0.0 0.0 0.0 0.0 12.5 415.5 ****** ***** 4.5 0.0 95.5 1987 0.0 5.5 43.0 2.5 0.0 0.0 0.0 10.0 0.0 5.5 0.0 7.5 74.0 65.5 3.4 13.5 17.6 1988 46.0 103.5 25.5 21.5 0.0 0.0 27.5 0.0 0.0 0.0 0.0 75.5 299.5 58.4 7.2 9.2 25.2 1989 4.0 3.0 29.0 35.5 0.5 0.0 0.0 0.0 0.0 0.0 32.5 34.0 138.5 26.0 26.0 0.0 48.0 1990 29.0 21.0 1.5 20.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.5 73.5 70.1 27.9 0.0 2.0 1991 120.0 28.5 51.0 12.5 0.0 0.0 0.0 0.0 0.0 0.0 ****** ****** ****** 94.1 5.9 0.0 0.0 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1993 66.3 119.8 28.3 8.0 0.0 0.0 0.0 ****** ****** ****** 0.0 2.0 ****** 95.5 3.6 0.0 0.9 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1995 5.9 133.5 19.5 65.5 2.0 0.0 4.4 0.0 0.0 6.7 0.0 77.1 314.6 50.5 21.5 1.4 26.6 1996 13.8 64.7 76.6 12.4 0.0 20.7 0.0 0.0 0.0 0.0 1.4 0.0 189.6 81.8 17.5 0.0 0.7 1997 45.7 18.7 83.9 23.0 0.0 0.0 8.8 0.0 0.0 10.0 10.0 17.2 217.3 68.2 10.6 4.0 17.1 1998 36.1 51.2 42.8 2.0 0.0 0.0 2.5 1.0 0.0 0.0 0.0 0.0 135.6 95.9 1.5 2.6 0.0 1999 45.3 110.4 106.5 0.0 0.0 0.0 0.5 0.0 0.0 0.0 0.0 1.2 263.9 99.4 0.0 0.2 0.5 2000 115.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 20.5 28.0 166.6 69.1 0.0 0.0 30.9 2001 9.8 20.4 22.4 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 38.6 92.2 57.0 0.0 1.1 41.9 2002 38.5 48.9 ****** ****** ****** 0.0 0.0 0.0 0.0 0.0 1.0 11.0 ****** 87.9 0.0 0.0 12.1 2003 33.0 39.8 89.8 21.6 0.0 0.0 0.0 12.0 0.0 0.0 0.0 84.0 280.2 58.0 7.7 4.3 30.0 MEAN 47.9 40.4 42.9 15.3 2.8 0.6 2.1 1.0 0.0 1.3 8.3 36.1 198.7 66.2 9.3 1.5 23.0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 12 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. NO. OF DAYS WITH PRECIPITATION YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 0 0 0 0 5 *** 1965 14 2 0 3 0 0 0 0 0 0 0 0 19 1966 2 6 0 2 0 0 0 0 0 0 0 1 11 1967 2 6 0 1 0 0 0 0 0 0 7 3 19 1968 4 5 5 2 0 0 0 0 0 0 1 4 21 1969 8 2 3 5 0 0 0 0 0 1 3 0 22 1970 4 4 3 1 0 0 0 2 0 0 0 1 15 1971 3 3 0 9 3 0 0 0 0 0 2 5 25 1972 10 3 11 8 1 0 0 0 0 0 0 2 35 1973 5 0 2 0 0 0 2 0 0 0 0 3 12 1974 11 6 6 0 0 0 0 0 0 0 0 8 31 1975 4 0 4 4 4 0 0 0 0 0 0 5 21 1976 4 7 10 2 0 0 1 0 0 1 3 3 31 1977 5 0 3 2 0 0 0 0 0 0 3 0 13 1978 4 4 4 0 0 0 0 0 0 0 5 3 20 1979 3 2 4 0 0 0 0 0 0 0 0 4 13 1980 3 3 6 1 0 0 0 0 0 0 0 3 16 1981 4 2 3 2 2 0 0 0 0 0 0 1 14 1982 4 4 10 3 0 0 0 0 0 1 3 4 29 1983 3 2 3 3 0 0 0 0 0 0 0 1 12 1984 2 1 10 0 3 0 0 0 0 0 0 6 22 1985 4 1 0 0 1 0 1 0 0 0 0 4 11 1986 *** *** *** 5 0 0 0 0 0 0 6 7 *** 1987 0 2 6 1 0 0 0 1 0 2 0 1 13 1988 6 6 4 5 0 0 2 0 0 0 0 6 29 1989 2 2 6 6 1 0 0 0 0 0 4 4 25 1990 6 7 2 5 0 0 0 0 0 0 0 2 22 1991 9 4 9 2 0 0 0 0 1 0 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 13 12 11 6 0 0 1 *** *** *** 0 1 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 4 6 5 7 3 0 1 0 0 2 0 8 36 1996 7 8 10 2 0 4 0 0 0 0 1 0 32 1997 4 3 6 7 0 0 1 0 0 2 4 4 31 1998 5 2 5 1 0 0 2 1 0 0 0 0 16 1999 4 11 5 0 0 0 1 0 0 0 0 1 22 2000 11 0 0 0 0 0 0 0 0 1 4 4 20 2001 1 2 3 1 0 0 0 1 0 0 0 6 14 2002 3 6 *** *** *** 0 0 0 0 0 1 4 *** 2003 6 4 7 2 0 0 0 1 0 0 0 3 23 MEAN 5 4 5 3 1 0 0 0 0 0 1 3 22 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 13 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. NO. OF DAYS PRECIPITATION EQUAL OR MORE THAN 1 MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 0 0 0 0 5 *** 1965 14 2 0 3 0 0 0 0 0 0 0 0 19 1966 2 5 0 2 0 0 0 0 0 0 0 1 10 1967 2 6 0 1 0 0 0 0 0 0 7 3 19 1968 4 5 5 2 0 0 0 0 0 0 1 4 21 1969 8 2 3 5 0 0 0 0 0 1 3 0 22 1970 4 3 3 1 0 0 0 2 0 0 0 1 14 1971 3 3 0 4 0 0 0 0 0 0 2 5 17 1972 10 3 11 8 1 0 0 0 0 0 0 2 35 1973 5 0 2 0 0 0 2 0 0 0 0 3 12 1974 7 6 6 0 0 0 0 0 0 0 0 8 27 1975 4 0 4 4 4 0 0 0 0 0 0 5 21 1976 4 7 10 2 0 0 1 0 0 1 3 3 31 1977 5 0 3 2 0 0 0 0 0 0 3 0 13 1978 3 4 4 0 0 0 0 0 0 0 5 3 19 1979 3 2 4 0 0 0 0 0 0 0 0 4 13 1980 3 3 6 1 0 0 0 0 0 0 0 3 16 1981 4 2 3 2 2 0 0 0 0 0 0 1 14 1982 4 4 10 3 0 0 0 0 0 1 3 4 29 1983 3 2 3 3 0 0 0 0 0 0 0 1 12 1984 2 1 10 0 3 0 0 0 0 0 0 6 22 1985 4 1 0 0 1 0 0 0 0 0 0 3 9 1986 *** *** *** 5 0 0 0 0 0 0 4 7 *** 1987 0 1 6 1 0 0 0 1 0 2 0 1 12 1988 5 6 4 5 0 0 2 0 0 0 0 5 27 1989 2 2 6 6 0 0 0 0 0 0 4 4 24 1990 6 5 1 5 0 0 0 0 0 0 0 1 18 1991 9 4 9 2 0 0 0 0 0 0 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 9 8 6 1 0 0 0 *** *** *** 0 1 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 3 5 3 5 1 0 1 0 0 2 0 7 27 1996 4 6 10 2 0 4 0 0 0 0 1 0 27 1997 4 3 6 6 0 0 1 0 0 2 4 4 30 1998 5 2 5 1 0 0 2 1 0 0 0 0 16 1999 4 11 5 0 0 0 0 0 0 0 0 1 21 2000 10 0 0 0 0 0 0 0 0 1 4 4 19 2001 1 2 3 0 0 0 0 1 0 0 0 6 13 2002 3 6 *** *** *** 0 0 0 0 0 1 3 *** 2003 6 3 7 2 0 0 0 1 0 0 0 3 22 MEAN 5 3 5 2 0 0 0 0 0 0 1 3 19 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 14 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. NO. OF DAYS PRECIPITATION EQUAL OR MORE THAN 10 MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 0 0 0 0 2 *** 1965 8 2 0 0 0 0 0 0 0 0 0 0 10 1966 0 0 0 0 0 0 0 0 0 0 0 0 0 1967 0 2 0 0 0 0 0 0 0 0 2 1 5 1968 1 2 2 1 0 0 0 0 0 0 0 1 7 1969 1 0 1 3 0 0 0 0 0 0 1 0 6 1970 3 0 0 0 0 0 0 0 0 0 0 0 3 1971 0 2 0 0 0 0 0 0 0 0 0 0 2 1972 4 1 3 1 0 0 0 0 0 0 0 0 9 1973 2 0 1 0 0 0 1 0 0 0 0 1 5 1974 3 1 3 0 0 0 0 0 0 0 0 3 10 1975 1 0 0 3 2 0 0 0 0 0 0 0 6 1976 0 4 5 0 0 0 1 0 0 1 2 1 14 1977 2 0 0 1 0 0 0 0 0 0 0 0 3 1978 1 2 3 0 0 0 0 0 0 0 4 1 11 1979 3 1 3 0 0 0 0 0 0 0 0 3 10 1980 1 3 5 1 0 0 0 0 0 0 0 1 11 1981 3 1 2 0 2 0 0 0 0 0 0 1 9 1982 0 2 2 0 0 0 0 0 0 0 1 0 5 1983 2 1 2 2 0 0 0 0 0 0 0 0 7 1984 1 1 3 0 1 0 0 0 0 0 0 1 7 1985 3 0 0 0 0 0 0 0 0 0 0 3 6 1986 *** *** *** 0 0 0 0 0 0 0 0 6 *** 1987 0 0 1 0 0 0 0 1 0 0 0 0 2 1988 2 3 1 0 0 0 2 0 0 0 0 2 10 1989 0 0 1 1 0 0 0 0 0 0 1 2 5 1990 0 0 0 1 0 0 0 0 0 0 0 0 1 1991 4 2 2 0 0 0 0 0 0 0 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 2 4 1 0 0 0 0 *** *** *** 0 0 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 0 3 1 4 0 0 0 0 0 0 0 3 11 1996 0 2 4 0 0 1 0 0 0 0 0 0 7 1997 2 1 2 0 0 0 0 0 0 0 0 0 5 1998 1 1 2 0 0 0 0 0 0 0 0 0 4 1999 2 3 2 0 0 0 0 0 0 0 0 0 7 2000 4 0 0 0 0 0 0 0 0 0 0 1 5 2001 0 1 1 0 0 0 0 0 0 0 0 2 4 2002 1 2 *** *** *** 0 0 0 0 0 0 0 *** 2003 1 2 3 1 0 0 0 1 0 0 0 2 10 MEAN 2 1 2 1 0 0 0 0 0 0 0 1 7 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 15 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 38 33 34 39 75 *** 1965 77 66 50 48 46 44 47 38 42 56 75 66 55 1966 65 64 56 44 35 38 36 40 44 52 45 58 48 1967 70 69 53 51 41 32 35 34 37 48 71 68 51 1968 63 74 59 53 51 44 40 37 38 48 60 72 53 1969 80 67 53 59 52 49 43 45 48 55 66 64 57 1970 78 69 65 49 48 43 44 50 45 48 53 68 55 1971 63 66 48 55 44 38 37 41 37 35 57 63 49 1972 85 85 73 56 43 37 36 40 40 46 53 65 55 1973 72 61 55 33 36 34 45 36 34 46 53 75 48 1974 80 80 81 58 57 55 47 64 61 55 61 78 65 1975 75 71 76 73 73 71 66 68 72 60 69 76 71 1976 76 82 76 60 54 67 67 75 75 73 83 70 72 1977 83 70 58 54 63 66 66 52 59 69 56 74 64 1978 80 77 57 48 43 43 55 38 42 50 63 69 55 1979 77 69 55 44 35 38 37 39 44 52 45 62 50 1980 70 65 69 45 35 39 38 40 43 55 55 67 52 1981 74 73 65 54 38 33 36 39 41 54 46 63 51 1982 74 72 68 49 33 37 36 40 44 50 55 64 52 1983 73 68 64 47 32 37 36 39 35 42 55 69 50 1984 75 73 64 41 37 35 36 41 44 44 44 75 51 1985 69 66 55 42 38 34 45 48 48 59 77 82 55 1986 *** *** *** 75 44 36 36 37 43 46 68 79 *** 1987 70 65 76 61 48 36 34 39 43 51 54 53 53 1988 69 73 65 61 42 36 44 40 46 46 55 63 53 1989 69 66 61 62 49 34 36 35 39 47 72 74 54 1990 75 71 53 46 34 34 34 34 35 55 62 62 50 1991 66 65 60 54 36 35 39 33 37 52 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 81 68 67 56 44 25 25 *** *** *** 59 66 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 75 72 76 74 54 41 45 40 45 58 61 79 60 1996 79 72 72 62 57 60 47 46 45 49 49 60 58 1997 68 65 66 67 55 45 56 55 61 64 72 75 62 1998 78 78 79 77 71 49 54 54 63 50 50 56 63 1999 68 78 69 59 53 49 51 43 51 48 48 58 56 2000 71 60 55 57 47 53 45 53 52 53 63 65 56 2001 68 73 71 51 48 46 44 53 50 57 58 69 57 2002 67 65 *** *** *** 39 32 38 52 54 66 70 *** 2003 66 71 68 59 50 45 53 44 61 59 69 71 60 MEAN 73 70 64 55 46 43 43 44 47 52 59 68 55 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 16 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 15 15 19 23 44 *** 1965 55 32 21 26 22 16 19 18 14 22 27 32 25 1966 33 42 22 26 19 17 17 20 21 24 29 36 26 1967 41 46 32 33 23 19 19 18 22 26 47 45 31 1968 38 47 33 36 29 19 19 22 21 24 33 45 31 1969 55 34 36 46 31 28 27 24 31 34 59 54 38 1970 62 46 41 35 28 26 26 30 32 42 38 49 38 1971 47 48 31 37 25 18 19 22 25 28 31 38 31 1972 61 52 49 42 32 22 19 23 21 26 35 44 36 1973 49 34 35 26 23 19 29 28 30 37 44 54 34 1974 72 68 74 55 54 41 39 52 49 54 54 71 57 1975 70 64 72 69 66 50 50 53 45 47 62 72 60 1976 68 72 78 54 38 45 46 48 45 59 68 70 58 1977 72 66 47 38 37 29 41 45 43 67 58 71 51 1978 77 74 27 25 22 15 28 17 19 21 48 45 35 1979 48 42 22 28 19 17 18 20 20 23 29 42 27 1980 45 50 45 29 20 18 18 19 20 21 30 42 30 1981 54 45 36 39 25 17 14 20 20 22 29 35 30 1982 48 44 33 28 20 17 17 19 20 25 37 41 29 1983 46 50 27 30 21 17 18 16 15 22 27 38 27 1984 43 50 34 25 22 17 17 18 20 21 24 37 27 1985 43 35 25 24 23 18 28 25 25 39 45 71 33 1986 *** *** *** 60 26 19 18 21 19 22 47 62 *** 1987 44 36 38 27 22 14 17 19 16 26 41 38 28 1988 53 50 37 36 20 16 21 17 18 21 28 41 30 1989 46 41 37 34 22 16 17 20 21 23 48 51 31 1990 57 42 24 28 16 15 19 17 19 22 28 38 27 1991 52 50 51 36 29 24 24 22 27 26 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 61 50 37 29 15 8 11 *** *** *** 47 37 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 46 51 56 44 25 20 18 18 23 25 38 59 35 1996 56 50 57 48 33 26 25 21 18 23 25 38 35 1997 45 42 43 34 21 13 22 28 35 50 59 62 38 1998 66 61 67 58 58 30 37 28 37 29 29 33 44 1999 51 49 45 19 21 15 22 13 14 18 33 39 28 2000 49 36 39 19 14 24 27 26 17 21 38 40 29 2001 38 37 40 29 17 18 20 22 16 36 37 47 30 2002 46 44 *** *** *** 17 18 21 27 17 36 41 *** 2003 42 38 40 37 20 18 23 32 17 16 26 41 29 MEAN 52 48 41 36 27 21 23 24 24 29 39 47 34 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 17 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 21 35 32 49 59 *** 1965 71 48 42 42 29 35 42 34 38 54 75 81 49 1966 65 65 41 34 21 20 20 24 27 33 32 50 36 1967 49 52 40 39 28 23 22 20 21 30 61 57 37 1968 50 57 37 39 37 30 23 28 35 40 47 57 40 1969 66 49 39 52 40 33 32 24 38 43 63 53 44 1970 63 55 48 36 32 31 31 35 37 40 44 55 42 1971 56 52 31 38 26 19 20 23 25 32 35 50 34 1972 68 59 60 46 32 25 23 24 24 31 39 55 41 1973 67 42 42 34 32 27 36 27 34 41 54 58 41 1974 74 74 77 62 54 51 44 61 60 56 55 77 62 1975 75 69 73 77 68 63 62 62 69 63 70 76 69 1976 77 76 71 59 42 52 52 50 58 73 74 75 63 1977 76 69 48 37 34 35 54 48 59 68 58 69 55 1978 76 77 48 44 32 35 49 34 30 32 50 59 47 1979 54 63 41 33 20 22 23 23 26 31 33 50 35 1980 51 66 56 33 22 21 20 22 27 33 33 54 37 1981 59 64 50 40 26 21 21 22 27 33 35 49 37 1982 53 68 49 34 22 20 20 23 27 34 42 55 37 1983 52 68 41 35 21 20 20 22 35 29 42 58 37 1984 62 64 50 31 24 20 20 21 24 35 45 48 37 1985 51 54 42 29 27 26 29 31 33 37 66 72 41 1986 *** *** *** 46 29 21 19 24 27 30 54 76 *** 1987 61 43 46 31 23 16 19 22 21 33 44 43 34 1988 60 55 41 46 22 21 27 21 27 36 46 61 39 1989 54 50 45 43 28 19 20 23 26 27 60 62 38 1990 66 50 25 29 18 17 19 18 18 20 25 39 29 1991 61 53 52 37 27 20 22 18 25 24 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 70 59 51 41 21 14 12 *** *** *** 51 48 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 57 56 67 61 39 38 21 30 25 38 56 73 47 1996 66 58 70 62 44 46 50 57 42 31 43 63 53 1997 73 73 63 54 42 29 41 35 46 59 68 69 54 1998 72 68 73 70 64 52 46 43 53 48 51 45 57 1999 62 64 65 54 41 34 43 27 32 39 43 49 46 2000 68 63 57 38 24 32 31 34 37 42 57 53 45 2001 57 58 55 43 33 29 29 32 34 51 48 62 44 2002 61 59 *** *** *** 27 22 23 36 33 47 57 *** 2003 55 51 57 50 37 31 34 29 28 45 61 57 45 MEAN 63 60 51 44 32 29 30 30 34 39 50 59 43 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 18 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. NO. OF DAYS MINIMUM TEMPERATURE EQUAL OR LESS THAN -4 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 0 0 0 0 11 *** 1965 1 0 0 0 0 0 0 0 0 0 0 5 6 1966 0 0 0 0 0 0 0 0 0 0 3 0 3 1967 4 0 0 0 0 0 0 0 0 0 0 2 6 1968 1 2 0 0 0 0 0 0 0 0 0 0 3 1969 0 1 0 0 0 0 0 0 0 0 0 0 1 1970 2 0 0 0 0 0 0 0 0 0 0 4 6 1971 2 3 0 0 0 0 0 0 0 0 0 0 5 1972 6 6 0 0 0 0 0 0 0 0 0 12 24 1973 11 0 0 0 0 0 0 0 0 0 0 6 17 1974 5 0 0 0 0 0 0 0 0 0 0 1 6 1975 9 0 1 0 0 0 0 0 0 0 0 11 21 1976 13 0 0 0 0 0 *** 0 0 0 0 1 *** 1977 16 0 0 0 0 0 0 0 0 0 0 0 16 1978 2 0 0 0 0 0 0 0 0 0 3 0 5 1979 1 0 0 0 0 0 0 0 0 0 3 0 4 1980 6 0 0 0 0 0 0 0 0 0 0 0 6 1981 3 0 0 0 0 0 0 0 0 0 2 1 6 1982 3 0 0 0 0 0 0 0 0 0 3 0 6 1983 1 0 0 0 0 0 0 0 0 0 0 3 4 1984 1 3 0 0 0 0 0 0 0 0 0 0 4 1985 0 0 0 0 0 0 0 0 0 0 0 6 6 1986 *** *** *** 0 0 *** 0 0 0 0 0 0 *** 1987 0 0 0 0 0 0 0 0 0 0 0 0 0 1988 3 0 0 0 0 0 0 0 0 0 0 1 4 1989 10 2 0 0 0 0 0 0 0 0 0 0 12 1990 0 0 0 0 0 0 0 0 0 0 0 1 1 1991 1 0 0 0 0 0 0 0 0 0 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 2 0 0 0 0 0 0 *** *** *** 0 0 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 2 0 *** *** *** *** *** 0 0 0 0 1 *** 1997 3 2 0 0 0 0 0 0 0 0 0 0 5 1998 7 0 0 0 0 0 0 0 0 0 0 1 8 1999 3 0 0 0 0 0 0 0 0 0 0 8 11 2000 2 0 0 0 0 0 0 0 0 0 0 0 2 2001 5 1 0 0 0 0 0 0 0 *** *** *** *** 2002 *** *** *** *** *** 0 0 0 0 0 0 2 *** 2003 1 0 0 0 0 0 0 0 0 0 0 0 1 MEAN 4 1 0 0 0 0 0 0 0 0 0 2 7 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 19 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. NO. OF DAYS MINIMUM TEMPERATURE EQUAL OR MORE THAN 21 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 11 1 0 0 0 *** 1965 0 0 0 0 0 2 1 2 0 0 0 0 5 1966 0 0 0 0 0 3 5 4 0 0 0 0 12 1967 0 0 0 0 0 0 15 3 1 0 0 0 19 1968 0 0 0 0 0 3 5 7 0 0 0 0 15 1969 0 0 0 0 0 0 12 10 0 0 0 0 22 1970 0 0 0 0 0 3 13 15 7 0 0 0 38 1971 0 0 0 0 0 3 23 17 1 0 0 0 44 1972 0 0 0 0 0 0 7 0 0 0 0 0 7 1973 0 0 0 0 0 0 1 0 0 0 0 0 1 1974 0 0 0 0 0 0 17 0 0 0 0 0 17 1975 0 0 0 0 0 0 0 0 0 0 0 0 0 1976 0 0 0 0 0 0 *** 0 0 0 0 0 *** 1977 0 0 0 0 0 0 2 1 0 0 0 0 3 1978 0 0 0 0 0 1 1 2 0 0 0 0 4 1979 0 0 0 0 0 2 5 4 0 0 0 0 11 1980 0 0 0 0 0 2 3 2 0 0 0 0 7 1981 0 0 0 0 0 0 3 2 0 0 0 0 5 1982 0 0 0 0 0 0 5 4 0 0 0 0 9 1983 0 0 0 0 0 3 23 9 1 0 0 0 36 1984 0 0 0 0 0 2 4 2 0 0 0 0 8 1985 0 0 0 0 0 0 31 27 0 0 0 0 58 1986 *** *** *** 0 0 *** 11 3 0 0 0 0 *** 1987 0 0 0 0 2 2 17 10 6 0 0 0 37 1988 0 0 0 0 0 2 27 9 4 0 0 0 42 1989 0 0 0 0 0 7 23 16 1 0 0 0 47 1990 0 0 0 0 0 11 28 22 4 0 0 0 65 1991 0 0 0 0 2 6 25 14 0 0 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 0 0 0 0 0 13 17 *** *** *** 0 0 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 0 0 0 0 0 0 13 3 0 0 0 0 16 1996 0 0 *** *** *** *** *** 5 0 0 0 0 *** 1997 0 0 0 0 0 0 15 4 0 0 0 0 19 1998 0 0 0 0 0 2 15 6 0 0 0 0 23 1999 0 0 0 0 0 0 3 11 0 0 0 0 14 2000 0 0 0 0 0 0 13 0 1 0 0 0 14 2001 0 0 0 0 0 0 5 0 0 *** *** *** *** 2002 *** *** *** *** *** 1 0 8 0 0 0 0 *** 2003 0 0 0 0 0 4 23 5 0 0 0 0 32 MEAN 0 0 0 0 0 2 12 6 1 0 0 0 21 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 20 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. NO. OF DAYS MAXIMUM TEMPERATURE EQUAL OR LESS THAN 0 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 0 0 0 0 0 *** 1965 0 0 0 0 0 0 0 0 0 0 0 0 0 1966 0 0 0 0 0 0 0 0 0 0 0 0 0 1967 0 0 0 0 0 0 0 0 0 0 0 0 0 1968 0 0 0 0 0 0 0 0 0 0 0 0 0 1969 0 0 0 0 0 0 0 0 0 0 0 0 0 1970 0 0 0 0 0 0 0 0 0 0 0 0 0 1971 0 0 0 0 0 0 0 0 0 0 0 0 0 1972 0 0 0 0 0 0 0 0 0 0 0 0 0 1973 2 0 0 0 0 0 0 0 0 0 0 0 2 1974 0 0 0 0 0 0 0 0 0 0 0 0 0 1975 0 0 0 0 0 0 0 0 0 0 0 0 0 1976 0 0 0 0 0 0 0 0 0 0 0 0 0 1977 0 0 0 0 0 0 0 0 0 0 0 0 0 1978 0 0 0 0 0 0 0 0 0 0 0 0 0 1979 0 0 0 0 0 0 0 0 0 0 0 0 0 1980 0 0 0 0 0 0 0 0 0 0 0 0 0 1981 0 0 0 0 0 0 0 0 0 0 0 0 0 1982 0 0 0 0 0 0 0 0 0 0 0 0 0 1983 0 0 0 0 0 0 0 0 0 0 0 0 0 1984 0 0 0 0 0 0 0 0 0 0 0 0 0 1985 0 0 0 0 0 0 0 0 0 0 0 0 0 1986 *** *** *** 0 0 0 0 0 0 0 0 0 *** 1987 0 0 0 0 0 0 0 0 0 0 0 0 0 1988 0 0 0 0 0 0 0 0 0 0 0 0 0 1989 0 0 0 0 0 0 0 0 0 0 0 0 0 1990 0 0 0 0 0 0 0 0 0 0 0 0 0 1991 0 0 0 0 0 0 0 0 0 0 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 0 0 0 0 0 0 0 *** *** *** 0 0 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 0 0 0 0 0 0 *** 0 0 0 0 0 *** 1996 1 0 0 0 0 0 0 0 0 0 0 0 1 1997 0 0 0 0 0 0 0 0 0 0 0 0 0 1998 0 0 0 0 0 0 0 0 0 0 0 0 0 1999 0 0 0 0 0 0 0 0 0 0 0 0 0 2000 0 0 0 0 0 0 0 0 0 0 0 0 0 2001 0 0 0 0 0 0 0 0 0 0 0 0 0 2002 0 0 *** *** *** 0 0 0 0 0 0 0 *** 2003 0 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 21 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. NO. OF DAYS MAXIMUM TEMPERATURE EQUAL OR MORE THAN 30 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 27 30 8 0 0 *** 1965 0 0 0 0 24 30 31 31 30 1 0 0 147 1966 0 0 0 0 23 30 31 31 28 5 0 0 148 1967 0 0 0 0 21 30 31 31 29 0 0 0 142 1968 0 0 0 0 10 30 31 31 28 10 0 0 140 1969 0 0 1 1 17 30 31 31 27 12 0 0 150 1970 0 0 0 3 24 30 31 31 30 10 0 0 159 1971 0 0 0 0 27 30 31 31 20 0 0 0 139 1972 0 0 0 0 10 30 31 31 30 9 0 0 141 1973 0 0 0 7 31 30 31 31 0 0 0 0 130 1974 0 0 0 0 31 30 31 29 10 0 0 0 131 1975 0 0 0 0 25 30 31 31 29 0 0 0 146 1976 0 0 0 21 27 30 31 31 30 0 0 0 170 1977 0 0 1 8 28 30 31 31 30 15 0 0 174 1978 0 0 0 0 23 30 31 31 30 5 0 0 150 1979 0 0 0 0 22 30 27 30 28 5 0 0 142 1980 0 0 0 0 23 30 30 30 29 5 0 0 147 1981 0 0 0 0 18 29 28 30 26 4 0 0 135 1982 0 0 0 0 22 29 30 31 27 6 0 0 145 1983 0 0 0 0 22 29 31 31 30 14 0 0 157 1984 0 0 0 0 22 29 29 31 29 5 0 0 145 1985 0 0 0 0 21 30 31 30 29 9 0 0 150 1986 *** *** *** 0 20 30 31 30 29 17 0 0 *** 1987 0 0 0 10 31 29 31 31 30 8 0 0 170 1988 0 0 0 2 28 30 31 31 30 3 0 0 155 1989 0 0 0 1 20 30 31 31 27 12 0 0 152 1990 0 0 0 3 29 30 31 31 30 6 0 0 160 1991 0 0 0 7 18 30 30 31 25 0 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 0 0 0 0 14 29 31 *** *** *** 0 0 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 0 0 0 0 10 23 *** 31 27 17 0 0 *** 1996 0 0 0 0 2 27 30 29 26 4 0 0 118 1997 0 0 0 0 8 30 31 31 28 8 0 0 136 1998 0 0 0 0 23 29 31 31 30 9 0 0 153 1999 0 0 0 0 24 30 30 28 28 5 0 0 145 2000 0 0 0 12 31 30 31 31 29 2 0 0 166 2001 0 0 0 7 25 30 31 31 30 7 0 0 161 2002 0 0 *** *** *** 30 31 31 30 17 0 0 *** 2003 0 0 0 0 20 30 31 31 30 8 0 0 150 MEAN 0 0 0 2 22 30 31 31 27 7 0 0 150 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 22 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. NO. OF DAYS MAXIMUM TEMPERATURE EQUAL OR MORE THAN 40 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 0 0 0 0 0 *** 1965 0 0 0 0 0 0 0 0 0 0 0 0 0 1966 0 0 0 0 0 0 0 0 0 0 0 0 0 1967 0 0 0 0 0 0 0 0 0 0 0 0 0 1968 0 0 0 0 0 0 0 0 0 0 0 0 0 1969 0 0 0 0 0 0 5 0 0 0 0 0 5 1970 0 0 0 0 0 1 0 6 0 0 0 0 7 1971 0 0 0 0 0 0 0 0 0 0 0 0 0 1972 0 0 0 0 0 0 0 0 0 0 0 0 0 1973 0 0 0 0 0 0 0 0 0 0 0 0 0 1974 0 0 0 0 0 0 0 0 0 0 0 0 0 1975 0 0 0 0 0 0 0 0 0 0 0 0 0 1976 0 0 0 0 0 0 0 0 1 0 0 0 1 1977 0 0 0 0 0 0 0 0 0 0 0 0 0 1978 0 0 0 0 0 0 0 0 0 0 0 0 0 1979 0 0 0 0 0 0 0 0 0 0 0 0 0 1980 0 0 0 0 0 0 0 0 0 0 0 0 0 1981 0 0 0 0 0 0 0 0 0 0 0 0 0 1982 0 0 0 0 0 0 0 0 0 0 0 0 0 1983 0 0 0 0 0 0 0 0 0 0 0 0 0 1984 0 0 0 0 0 0 0 0 0 0 0 0 0 1985 0 0 0 0 0 0 2 0 0 0 0 0 2 1986 *** *** *** 0 0 6 0 0 0 0 0 0 *** 1987 0 0 0 0 0 0 2 0 0 0 0 0 2 1988 0 0 0 0 0 0 10 2 0 0 0 0 12 1989 0 0 0 0 0 5 7 0 0 0 0 0 12 1990 0 0 0 0 0 1 1 0 0 0 0 0 2 1991 0 0 0 0 0 0 2 0 0 0 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 0 0 0 0 0 0 0 *** *** *** 0 0 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 0 0 0 0 0 0 *** 0 0 0 0 0 *** 1996 0 0 0 0 0 0 0 0 0 0 0 0 0 1997 0 0 0 0 0 0 11 5 0 0 0 0 16 1998 0 0 0 0 0 0 7 0 0 0 0 0 7 1999 0 0 0 0 0 0 3 0 0 0 0 0 3 2000 0 0 0 0 0 1 8 0 0 0 0 0 9 2001 0 0 0 0 0 0 13 0 0 0 0 0 13 2002 0 0 *** *** *** 0 0 0 0 0 0 0 *** 2003 0 0 0 0 0 2 19 0 0 0 0 0 21 MEAN 0 0 0 0 0 0 3 0 0 0 0 0 3 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 23 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. NO. OF DAYS MAXIMUM TEMPERATURE EQUAL OR MORE THAN 45 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 0 0 0 0 0 *** 1965 0 0 0 0 0 0 0 0 0 0 0 0 0 1966 0 0 0 0 0 0 0 0 0 0 0 0 0 1967 0 0 0 0 0 0 0 0 0 0 0 0 0 1968 0 0 0 0 0 0 0 0 0 0 0 0 0 1969 0 0 0 0 0 0 0 0 0 0 0 0 0 1970 0 0 0 0 0 0 0 0 0 0 0 0 0 1971 0 0 0 0 0 0 0 0 0 0 0 0 0 1972 0 0 0 0 0 0 0 0 0 0 0 0 0 1973 0 0 0 0 0 0 0 0 0 0 0 0 0 1974 0 0 0 0 0 0 0 0 0 0 0 0 0 1975 0 0 0 0 0 0 0 0 0 0 0 0 0 1976 0 0 0 0 0 0 0 0 0 0 0 0 0 1977 0 0 0 0 0 0 0 0 0 0 0 0 0 1978 0 0 0 0 0 0 0 0 0 0 0 0 0 1979 0 0 0 0 0 0 0 0 0 0 0 0 0 1980 0 0 0 0 0 0 0 0 0 0 0 0 0 1981 0 0 0 0 0 0 0 0 0 0 0 0 0 1982 0 0 0 0 0 0 0 0 0 0 0 0 0 1983 0 0 0 0 0 0 0 0 0 0 0 0 0 1984 0 0 0 0 0 0 0 0 0 0 0 0 0 1985 0 0 0 0 0 0 0 0 0 0 0 0 0 1986 *** *** *** 0 0 0 0 0 0 0 0 0 *** 1987 0 0 0 0 0 0 0 0 0 0 0 0 0 1988 0 0 0 0 0 0 0 0 0 0 0 0 0 1989 0 0 0 0 0 0 0 0 0 0 0 0 0 1990 0 0 0 0 0 0 0 0 0 0 0 0 0 1991 0 0 0 0 0 0 0 0 0 0 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 0 0 0 0 0 0 0 *** *** *** 0 0 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 0 0 0 0 0 0 *** 0 0 0 0 0 *** 1996 0 0 0 0 0 0 0 0 0 0 0 0 0 1997 0 0 0 0 0 0 0 0 0 0 0 0 0 1998 0 0 0 0 0 0 0 0 0 0 0 0 0 1999 0 0 0 0 0 0 0 0 0 0 0 0 0 2000 0 0 0 0 0 0 0 0 0 0 0 0 0 2001 0 0 0 0 0 0 0 0 0 0 0 0 0 2002 0 0 *** *** *** 0 0 0 0 0 0 0 *** 2003 0 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 24 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. NO. OF FREEZING DAYS , DATE OF START AND END FREEZING START END YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MO DAY MO DAY -------------- 1964 *** *** *** *** *** *** *** 0 0 0 3 22 *** 11 28 12 31 1965 20 8 4 0 0 0 0 0 0 0 4 25 61 11 13 3 8 1966 14 4 0 0 0 0 0 0 0 0 6 21 45 11 17 2 25 1967 24 7 2 2 0 0 0 0 0 0 2 19 56 11 29 4 3 1968 17 13 0 0 0 0 0 0 0 0 0 5 35 12 10 2 27 1969 8 8 0 0 0 0 0 0 0 0 5 9 30 11 24 2 17 1970 20 4 0 0 0 0 0 0 0 0 0 20 44 12 1 2 5 1971 26 13 0 0 0 0 0 0 0 0 0 17 56 12 6 2 28 1972 20 23 1 0 0 0 0 0 0 0 4 24 72 11 23 3 3 1973 24 6 4 0 0 0 0 0 0 0 0 25 59 12 1 3 12 1974 15 11 0 0 0 0 0 0 0 0 9 17 52 11 14 2 23 1975 26 0 13 0 0 0 0 0 0 0 0 25 64 12 1 3 25 1976 26 3 0 0 0 0 *** 0 0 0 0 22 *** 12 9 2 21 1977 27 0 0 0 0 0 0 0 0 0 0 0 27 1 1 1 31 1978 25 7 1 0 0 0 0 0 0 0 5 14 52 11 26 3 6 1979 9 3 2 0 0 0 0 0 0 0 6 18 38 11 17 3 21 1980 26 1 0 0 0 0 0 0 0 0 3 19 49 11 26 2 25 1981 18 4 0 0 0 0 0 0 0 0 6 19 47 11 17 2 27 1982 23 2 0 0 0 0 0 0 0 0 7 19 51 11 17 2 25 1983 21 2 0 0 0 0 0 0 0 0 0 19 42 12 11 2 25 1984 28 16 0 0 0 0 0 0 0 0 0 15 59 12 1 2 25 1985 20 3 0 0 0 0 0 0 0 0 0 20 43 12 6 2 17 1986 *** *** *** 0 0 *** 0 0 0 0 0 12 *** 12 9 12 26 1987 23 3 0 0 0 0 0 0 0 0 0 9 35 12 1 2 23 1988 14 6 0 0 0 0 0 0 0 0 2 8 30 11 24 2 9 1989 24 17 1 0 0 0 0 0 0 0 0 10 52 12 9 3 31 1990 19 8 0 0 0 0 0 0 0 0 0 3 30 12 28 2 27 1991 7 7 0 0 0 0 0 0 0 0 *** *** *** 1 6 2 23 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1993 12 3 0 0 0 0 0 *** *** *** 0 0 *** 1 14 2 9 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1995 18 7 2 0 0 0 0 0 0 0 1 7 35 11 27 3 6 1996 15 0 *** *** *** *** *** 0 0 1 2 26 *** 10 22 1 29 1997 26 20 1 0 0 0 0 0 0 0 6 23 76 11 25 3 1 1998 25 9 3 0 0 0 0 0 0 0 3 19 59 11 21 3 5 1999 23 3 6 0 0 0 0 0 0 0 1 24 57 11 20 3 11 2000 18 16 2 0 0 0 0 0 0 0 1 4 41 11 27 3 13 2001 26 9 0 0 0 0 0 0 0 *** *** *** *** 1 1 2 16 2002 *** *** *** *** *** 0 0 0 0 0 7 16 *** 11 24 12 31 2003 22 2 3 0 0 0 0 0 0 0 7 8 42 11 20 3 3 MEAN 20 7 1 0 0 0 0 0 0 0 3 16 47 10 22 4 3 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 25 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 ****** ****** ****** ****** ****** ****** ****** 30.1 24.8 19.7 14.9 6.2 ****** 1965 6.5 11.7 15.3 17.0 24.9 27.4 28.2 27.2 24.1 18.4 12.4 7.8 18.4 1966 9.8 9.5 13.8 19.0 25.3 29.5 30.0 28.9 24.4 20.3 14.8 9.8 19.6 1967 7.8 9.1 12.0 14.6 23.2 27.0 30.8 29.6 27.6 21.2 13.1 8.3 18.7 1968 8.7 7.3 14.6 16.9 21.5 27.0 28.9 29.0 25.2 20.6 15.1 10.2 18.7 1969 7.5 9.8 17.1 18.0 24.2 28.0 30.6 29.1 24.4 21.0 12.0 10.9 19.4 1970 6.7 11.0 13.6 20.7 25.2 30.4 31.4 31.6 27.4 20.9 15.3 9.5 20.3 1971 7.2 9.1 14.4 17.9 24.9 28.0 30.0 29.7 24.8 19.0 14.5 10.5 19.2 1972 5.5 5.2 11.2 16.8 20.6 27.9 30.4 27.9 26.6 21.8 16.4 6.9 18.1 1973 4.9 13.0 14.4 20.9 24.3 30.4 31.0 28.6 21.8 19.4 15.9 9.3 19.5 1974 7.2 7.4 17.9 19.7 24.0 29.6 31.6 24.6 21.6 18.3 12.7 7.8 18.5 1975 6.3 10.9 8.5 16.9 23.7 25.9 27.1 23.5 21.3 16.8 10.5 6.0 16.4 1976 5.5 9.0 13.3 22.9 25.2 28.8 31.0 25.8 23.9 17.2 10.0 6.5 18.3 1977 5.1 14.4 19.8 20.7 23.3 27.3 27.4 27.3 25.2 22.1 16.6 13.3 20.2 1978 7.6 8.8 15.0 16.9 24.8 27.3 27.0 27.2 24.4 20.1 12.2 9.9 18.4 1979 9.5 9.8 13.7 18.6 25.1 29.3 29.7 28.7 24.2 20.3 14.7 9.9 19.5 1980 8.1 9.7 12.5 18.6 25.1 29.6 29.8 28.1 23.9 19.4 14.6 10.0 19.1 1981 8.1 9.6 12.6 17.2 23.3 29.2 29.4 28.7 23.5 19.5 14.7 9.8 18.8 1982 7.7 9.4 13.4 17.8 24.3 28.8 30.1 29.2 24.4 20.2 12.8 9.4 19.0 1983 7.9 9.0 13.2 18.0 24.9 29.2 30.0 29.8 24.8 20.5 14.6 7.8 19.1 1984 6.8 7.4 12.3 18.4 24.7 29.4 29.8 29.3 24.3 20.0 15.0 9.6 18.9 1985 8.4 10.0 13.5 18.9 24.1 29.3 32.1 28.3 25.7 20.4 13.7 6.0 19.2 1986 ****** ****** ****** 16.1 26.3 30.4 30.9 28.6 24.0 21.6 12.8 6.2 ****** 1987 7.1 11.0 11.9 18.6 26.4 29.0 30.4 30.1 27.0 19.2 13.9 8.7 19.4 1988 5.6 9.2 14.5 18.7 26.4 29.5 31.9 29.5 26.7 20.1 12.9 9.0 19.5 1989 5.3 6.8 12.4 17.6 24.6 30.3 31.4 30.1 26.1 21.0 13.4 7.8 18.9 1990 5.6 8.9 14.3 19.1 26.1 29.6 30.7 30.1 27.1 21.0 14.4 8.8 19.6 1991 7.1 7.5 12.6 18.8 23.3 27.6 30.8 29.3 25.7 19.5 ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 5.7 8.7 11.4 17.6 24.5 30.0 31.1 ****** ****** ****** 14.0 9.7 ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 7.5 8.8 9.7 15.1 22.3 27.8 31.3 30.0 25.4 21.1 15.0 7.6 18.5 1996 5.8 9.8 11.2 16.2 22.8 26.5 27.6 26.9 24.3 19.7 13.8 7.7 17.7 1997 6.1 6.5 9.4 15.5 21.1 27.7 29.3 29.4 24.2 19.2 11.4 6.2 17.2 1998 4.6 7.5 11.1 17.6 23.5 27.4 30.5 29.9 26.5 19.6 13.1 9.0 18.4 1999 6.1 9.7 10.2 16.6 23.3 28.6 28.4 29.2 26.0 19.3 14.8 8.7 18.4 2000 7.5 9.1 14.0 20.9 26.4 30.6 31.9 29.0 26.8 19.2 11.5 10.3 19.8 2001 6.0 8.0 12.4 20.5 26.5 29.0 31.8 28.4 25.9 19.3 13.2 9.6 19.2 2002 7.2 10.1 ****** ****** ****** 28.5 28.8 30.1 26.4 20.4 13.2 8.4 ****** 2003 7.3 11.0 12.3 18.5 23.9 30.1 32.3 29.0 26.0 18.9 11.6 8.6 19.1 MEAN 6.9 9.3 13.1 18.2 24.3 28.7 30.1 28.7 25.0 19.9 13.7 8.7 18.9 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 26 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. AVERAGE OF DEW POINT TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 ****** ****** ****** ****** ****** ****** ****** 5.8 3.0 -0.7 -0.9 -2.5 ****** 1965 0.4 -1.3 -0.4 1.7 5.8 7.8 10.2 6.8 3.7 3.9 2.8 -1.1 3.4 1966 -0.1 0.5 -1.5 1.7 2.6 6.1 6.5 7.0 4.6 3.8 -0.9 -1.5 2.4 1967 -2.0 -0.1 -1.2 0.7 4.1 4.3 7.8 5.9 6.0 4.2 4.0 -0.4 2.8 1968 -2.0 -0.9 1.1 3.2 6.2 7.0 7.0 8.1 5.9 4.5 3.0 1.5 3.7 1969 1.3 -1.0 3.5 7.4 9.0 10.9 12.4 8.8 9.1 7.4 4.9 2.4 6.3 1970 0.8 2.3 3.0 6.1 8.2 11.7 12.8 14.9 11.4 7.7 3.1 1.1 6.9 1971 -1.8 0.1 -0.7 4.4 6.3 5.2 6.9 8.8 4.7 1.4 0.4 -0.3 3.0 1972 0.3 -1.3 3.2 5.0 4.4 7.1 8.0 7.6 5.9 4.5 3.1 -2.3 3.8 1973 -2.3 0.8 1.2 2.9 5.4 8.4 13.3 9.3 4.6 5.7 5.4 2.0 4.7 1974 2.8 2.8 13.7 11.1 14.3 17.3 17.4 16.0 12.4 9.1 4.1 3.5 10.4 1975 1.7 5.1 3.9 11.9 17.5 17.4 18.1 15.3 13.1 7.9 4.6 1.5 9.8 1976 0.9 5.1 8.6 13.9 11.8 18.3 20.4 16.1 14.8 11.0 5.6 1.6 10.7 1977 1.2 8.4 8.5 6.4 9.8 12.2 16.6 15.2 14.7 15.7 7.9 8.1 10.4 1978 3.8 4.7 1.4 1.8 5.9 7.2 12.7 6.7 4.3 2.5 1.8 0.9 4.5 1979 1.2 1.1 -1.5 1.6 2.4 6.2 6.9 6.7 4.3 3.4 -1.0 -0.6 2.5 1980 -1.2 1.8 2.3 2.3 3.1 6.5 6.6 5.9 4.1 2.6 -0.1 0.3 2.8 1981 0.7 1.5 1.3 3.9 3.3 5.4 5.2 6.6 3.4 3.0 -0.8 -1.2 2.7 1982 -0.5 1.6 1.9 2.0 2.3 5.7 6.5 7.1 4.5 3.7 0.1 -0.1 2.9 1983 -0.7 1.5 -0.3 2.1 2.3 5.7 6.4 6.6 3.4 1.6 0.6 -1.4 2.3 1984 -1.2 0.3 0.8 0.8 3.6 5.8 6.1 7.0 4.1 2.7 -0.2 -0.2 2.5 1985 -1.0 -0.2 -0.7 1.0 3.9 7.1 13.7 10.4 8.5 7.5 6.1 2.3 4.9 1986 ****** ****** ****** 7.6 8.1 6.9 7.1 6.8 4.0 3.8 3.5 1.2 ****** 1987 -1.1 -0.8 1.2 3.0 6.5 3.3 6.0 7.5 4.6 2.5 2.0 -3.2 2.6 1988 -1.8 0.9 2.3 6.1 5.2 5.8 11.0 6.3 6.2 2.5 -0.6 -0.5 3.6 1989 -3.5 -3.2 0.4 4.7 6.0 5.8 7.3 7.6 5.6 2.7 4.7 0.5 3.2 1990 -0.7 -0.7 -2.9 1.9 2.1 4.2 6.7 5.4 3.7 1.9 -1.5 -3.1 1.4 1991 -0.7 -1.2 3.0 4.8 4.6 5.8 9.3 5.6 6.0 2.1 ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 0.2 0.4 0.5 3.1 1.9 -1.6 0.7 ****** ****** ****** 4.0 -0.8 ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 -0.7 0.5 2.8 6.3 6.8 8.0 8.2 9.2 6.1 5.5 4.6 2.4 5.0 1996 -0.3 2.0 4.9 7.4 9.6 12.0 12.1 11.1 6.2 2.5 -0.9 -1.7 5.4 1997 -1.3 -1.4 0.8 4.4 5.2 5.7 12.7 13.3 11.4 10.4 5.2 0.8 5.6 1998 -0.1 2.0 6.2 11.4 16.3 13.3 17.1 14.5 14.8 5.9 0.2 -3.1 8.2 1999 -1.2 2.6 2.1 2.4 6.6 8.5 11.6 6.5 5.9 2.0 1.2 -1.8 3.9 2000 0.2 -0.6 3.5 4.2 4.8 12.9 13.4 12.3 8.5 3.4 1.5 0.4 5.4 2001 -3.1 -1.0 3.2 5.8 7.2 8.6 11.4 10.3 6.5 7.2 1.8 1.6 5.0 2002 -1.0 1.4 ****** ****** ****** 6.4 5.6 8.3 10.4 2.5 2.2 -0.2 ****** 2003 -1.7 1.2 3.1 7.1 6.6 9.9 14.4 9.9 7.2 2.7 0.7 -0.1 5.1 MEAN -0.4 1.0 2.3 4.8 6.4 8.1 10.2 9.1 7.0 4.6 2.2 0.2 4.6 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 27 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. AVERAGE OF MIXING RATIO IN G/KG YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 ****** ****** ****** ****** ****** ****** ****** 7.58 6.31 4.81 4.79 4.32 ****** 1965 5.23 4.86 4.88 5.72 7.75 8.55 10.08 8.10 6.76 6.67 6.12 4.77 6.62 1966 5.00 5.15 4.53 5.71 5.98 7.62 7.77 8.14 6.86 6.43 4.65 4.50 6.03 1967 4.31 4.96 4.47 5.20 6.61 6.64 8.52 7.35 7.48 6.59 6.66 4.86 6.14 1968 4.26 4.69 5.35 6.27 7.66 8.07 8.03 8.74 7.48 6.75 6.07 5.53 6.57 1969 5.48 4.61 6.39 8.39 9.35 10.58 11.56 9.47 9.29 8.24 7.20 5.97 8.04 1970 5.24 5.85 6.10 7.60 8.84 11.12 11.79 13.60 10.95 8.69 6.21 5.48 8.45 1971 4.48 4.97 4.66 6.75 7.63 7.03 7.98 9.05 6.98 5.40 5.06 4.88 6.24 1972 5.11 4.52 6.23 7.19 6.73 7.98 8.58 8.29 7.37 6.75 6.22 4.20 6.60 1973 4.23 5.18 5.47 6.07 7.18 8.74 12.62 9.51 6.76 7.34 7.27 5.84 7.18 1974 6.25 6.17 12.79 10.75 13.27 16.05 16.22 14.85 11.71 9.35 6.79 6.40 10.88 1975 5.68 7.15 6.76 11.38 16.90 16.42 17.27 14.60 12.48 8.66 6.81 5.70 10.82 1976 5.41 7.12 9.30 12.88 11.15 17.20 19.82 15.13 13.73 10.77 7.30 5.63 11.29 1977 5.55 9.12 9.14 7.97 9.78 11.51 15.29 14.24 13.66 14.87 8.85 9.13 10.76 1978 6.87 7.11 5.62 5.66 7.64 8.22 11.88 8.04 6.72 5.91 5.79 5.51 7.08 1979 5.48 5.41 4.53 5.72 5.92 7.67 8.05 7.95 6.69 6.27 4.62 4.86 6.10 1980 4.60 5.72 5.99 5.87 6.17 7.79 7.91 7.50 6.59 5.98 4.85 5.13 6.17 1981 5.31 5.55 5.49 6.75 6.23 7.13 7.13 7.86 6.29 6.10 4.68 4.55 6.09 1982 4.84 5.56 5.74 5.72 5.77 7.36 7.79 8.19 6.81 6.41 5.07 4.94 6.18 1983 4.74 5.49 4.85 5.77 5.82 7.38 7.72 7.88 6.44 5.54 5.20 4.45 5.94 1984 4.52 5.03 5.27 5.17 6.41 7.40 7.60 7.99 6.55 6.01 4.85 4.82 5.97 1985 4.59 4.81 4.65 5.26 6.53 8.06 12.61 10.21 8.83 8.34 7.58 5.94 7.28 1986 ****** ****** ****** 8.62 8.57 8.07 8.09 7.99 6.48 6.37 6.38 5.48 ****** 1987 4.58 4.73 5.53 6.17 7.79 6.31 7.51 8.40 6.84 6.05 5.80 3.98 6.14 1988 4.38 5.40 5.95 7.72 7.02 7.33 10.62 7.76 7.79 5.89 4.90 4.98 6.65 1989 3.88 4.09 5.14 6.98 7.46 7.30 8.24 8.38 7.32 5.97 7.05 5.16 6.41 1990 4.75 4.81 4.05 5.76 5.75 6.64 7.81 7.23 6.38 5.73 4.48 3.98 5.61 1991 4.89 4.55 6.30 7.16 6.96 7.45 9.39 7.55 7.69 5.79 ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 5.18 5.27 5.30 6.37 5.80 4.58 5.20 ****** ****** ****** 6.60 4.66 ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 4.75 5.29 6.28 7.75 7.91 8.83 9.12 9.24 7.47 7.23 6.85 5.86 7.21 1996 4.84 5.67 6.96 8.37 9.51 11.37 11.30 10.77 7.74 5.87 4.59 4.35 7.61 1997 4.50 4.46 5.29 6.97 7.11 7.46 11.96 12.26 10.94 10.36 7.34 5.32 7.83 1998 4.99 5.79 7.87 11.06 15.14 12.20 15.70 13.35 13.82 7.65 5.06 4.05 9.72 1999 4.58 5.97 5.78 5.89 7.99 8.99 11.00 7.83 7.46 5.63 5.42 4.42 6.75 2000 5.11 4.93 6.50 6.68 6.99 11.79 12.18 11.33 9.03 6.28 5.53 5.13 7.62 2001 3.94 4.56 6.23 7.57 8.20 8.94 10.80 10.14 7.83 8.56 5.61 5.57 7.33 2002 4.67 5.59 ****** ****** ****** 7.95 7.26 8.70 10.05 5.88 5.80 4.90 ****** 2003 4.39 5.35 6.17 8.03 7.80 9.91 12.98 11.22 8.11 6.03 5.26 4.89 7.51 MEAN 4.91 5.43 6.04 7.19 8.04 9.02 10.42 9.63 8.32 7.06 5.93 5.14 7.26 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 28 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. AVERAGE OF VAPOUR PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 ****** ****** ****** ****** ****** ****** ****** 9.66 8.03 6.11 6.07 5.43 ****** 1965 6.56 6.13 6.18 7.24 9.82 10.85 12.78 10.29 8.58 8.44 7.71 6.00 8.38 1966 6.30 6.48 5.73 7.24 7.62 9.70 9.90 10.35 8.72 8.16 5.89 5.68 7.65 1967 5.42 6.24 5.65 6.57 8.40 8.46 10.85 9.38 9.52 8.36 8.39 6.12 7.78 1968 5.37 5.90 6.77 7.93 9.70 10.25 10.23 11.11 9.51 8.56 7.67 6.96 8.33 1969 6.88 5.81 8.08 10.58 11.84 13.39 14.66 12.02 11.78 10.43 9.06 7.52 10.17 1970 6.59 7.37 7.70 9.62 11.21 14.10 14.96 17.20 13.87 10.98 7.85 6.90 10.69 1971 5.64 6.26 5.90 8.54 9.69 8.96 10.16 11.51 8.87 6.86 6.40 6.16 7.91 1972 6.41 5.68 7.85 9.08 8.54 10.15 10.93 10.55 9.38 8.56 7.87 5.29 8.36 1973 5.32 6.55 6.92 7.71 9.12 11.13 15.95 12.08 8.58 9.29 9.18 7.35 9.10 1974 7.85 7.74 16.03 13.54 16.69 20.17 20.43 18.64 14.75 11.78 8.55 8.04 13.68 1975 7.14 8.99 8.48 14.28 21.10 20.57 21.62 18.31 15.68 10.92 8.56 7.15 13.57 1976 6.79 8.93 11.67 16.20 14.09 21.58 24.79 18.99 17.26 13.52 9.17 7.07 14.17 1977 6.96 11.46 11.53 10.07 12.36 14.55 19.23 17.93 17.20 18.62 11.14 11.46 13.54 1978 8.62 8.93 7.10 7.17 9.70 10.44 15.01 10.21 8.54 7.50 7.30 6.94 8.95 1979 6.90 6.82 5.73 7.25 7.54 9.77 10.25 10.12 8.50 7.96 5.85 6.12 7.73 1980 5.79 7.20 7.54 7.44 7.86 9.93 10.08 9.55 8.38 7.58 6.13 6.46 7.83 1981 6.68 6.98 6.93 8.53 7.92 9.10 9.10 10.01 8.00 7.73 5.93 5.74 7.72 1982 6.10 7.00 7.24 7.24 7.34 9.38 9.93 10.42 8.66 8.12 6.40 6.23 7.84 1983 5.96 6.90 6.13 7.30 7.42 9.41 9.84 10.03 8.19 7.03 6.57 5.60 7.53 1984 5.69 6.32 6.65 6.57 8.15 9.43 9.68 10.18 8.33 7.62 6.14 6.08 7.57 1985 5.78 6.06 5.88 6.67 8.30 10.27 15.97 12.94 11.21 10.55 9.54 7.45 9.22 1986 ****** ****** ****** 10.85 10.89 10.28 10.32 10.17 8.24 8.09 8.04 6.88 ****** 1987 5.77 5.97 6.98 7.82 9.91 8.05 9.57 10.69 8.71 7.67 7.33 5.02 7.79 1988 5.51 6.79 7.51 9.76 8.94 9.35 13.49 9.88 9.90 7.47 6.19 6.27 8.42 1989 4.88 5.15 6.48 8.83 9.47 9.32 10.50 10.68 9.31 7.58 8.88 6.49 8.13 1990 5.97 6.06 5.13 7.30 7.33 8.47 9.96 9.23 8.13 7.27 5.66 5.02 7.13 1991 6.14 5.73 7.94 9.05 8.84 9.49 11.94 9.62 9.78 7.34 ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 6.50 6.63 6.68 8.05 7.37 5.86 6.65 ****** ****** ****** 8.33 5.87 ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 5.97 6.65 7.89 9.76 10.03 11.20 11.58 11.75 9.50 9.16 8.64 7.36 9.12 1996 6.08 7.14 8.76 10.55 12.03 14.36 14.29 13.62 9.82 7.45 5.80 5.49 9.62 1997 5.66 5.61 6.65 8.80 9.01 9.48 15.13 15.51 13.82 13.05 9.23 6.68 9.89 1998 6.26 7.28 9.89 13.90 18.98 15.42 19.77 16.86 17.40 9.69 6.39 5.12 12.25 1999 5.76 7.51 7.27 7.44 10.12 11.42 13.93 9.96 9.47 7.14 6.86 5.57 8.54 2000 6.43 6.21 8.20 8.47 8.89 14.94 15.44 14.35 11.46 7.96 6.97 6.46 9.65 2001 4.96 5.75 7.86 9.59 10.41 11.36 13.71 12.86 9.94 10.81 7.09 7.02 9.28 2002 5.87 7.04 ****** ****** ****** 10.11 9.26 11.08 12.74 7.46 7.33 6.18 ****** 2003 5.53 6.74 7.78 10.15 9.89 12.58 16.44 14.06 10.30 7.63 6.63 6.15 9.49 MEAN 6.17 6.83 7.62 9.09 10.18 11.44 13.20 12.21 10.54 8.93 7.48 6.47 9.18 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 29 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. AVERAGE OF SATURATION DEFICIT PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 ****** ****** ****** ****** ****** ****** ****** 34.58 24.90 17.86 11.70 4.38 ****** 1965 3.34 8.09 11.58 12.69 22.78 26.59 26.89 26.98 23.17 14.34 7.97 5.40 15.82 1966 6.49 5.96 10.95 15.26 25.54 32.85 33.99 31.01 23.52 16.63 11.81 6.94 18.41 1967 5.69 5.56 8.74 10.46 21.24 28.23 34.95 33.49 28.64 17.77 7.61 5.19 17.30 1968 6.32 4.67 10.53 11.98 16.82 27.27 31.11 30.66 24.21 17.24 10.40 5.91 16.43 1969 3.73 6.74 12.08 10.85 19.71 25.78 31.01 29.75 20.12 15.62 5.49 6.04 15.58 1970 3.57 6.31 8.57 15.92 22.72 31.05 32.36 30.70 24.10 15.08 10.68 5.68 17.23 1971 5.12 5.76 11.02 12.72 22.90 30.23 33.54 31.64 23.80 15.54 10.85 7.20 17.53 1972 2.90 3.59 5.87 10.57 16.60 28.63 33.80 28.47 26.76 18.82 11.76 5.35 16.09 1973 3.93 9.27 10.33 17.49 22.06 33.94 30.87 28.33 17.77 13.75 9.43 5.16 16.86 1974 2.65 2.88 4.87 9.99 13.83 22.56 27.85 13.58 12.36 9.69 6.80 2.82 10.82 1975 2.64 4.36 3.14 5.53 10.07 15.78 17.05 13.20 12.06 8.97 4.36 2.56 8.31 1976 2.61 2.88 3.88 12.33 19.40 20.30 22.74 16.52 14.53 6.86 3.31 2.81 10.68 1977 2.28 5.30 12.08 15.39 17.41 23.88 19.52 20.25 16.95 8.96 8.38 4.81 12.93 1978 2.52 2.93 10.34 12.50 22.53 27.03 22.05 27.15 23.50 17.06 7.59 5.82 15.09 1979 5.34 5.81 10.91 14.72 25.28 32.22 32.91 30.67 23.37 16.75 11.72 6.61 18.03 1980 5.48 5.40 7.66 14.36 24.92 32.67 33.18 29.91 23.03 15.89 11.19 6.32 17.50 1981 4.51 5.46 8.37 11.42 21.55 32.59 33.21 30.75 22.65 15.88 11.52 6.89 17.07 1982 4.94 5.33 8.95 13.66 23.96 31.61 34.07 31.53 23.65 16.49 9.09 6.01 17.44 1983 5.10 4.93 9.81 13.84 25.15 32.35 33.89 33.67 24.73 18.28 11.32 5.76 18.24 1984 4.72 4.40 8.45 15.00 24.09 32.97 33.73 32.08 23.97 16.76 11.71 6.34 17.85 1985 5.62 6.66 10.45 15.68 22.69 31.79 32.84 26.46 23.59 14.66 6.71 2.43 16.63 1986 ****** ****** ****** 8.07 24.50 35.22 36.11 30.69 23.70 19.43 7.56 3.00 ****** 1987 4.82 7.80 7.62 15.65 26.05 33.69 35.65 33.56 29.11 15.79 9.19 6.78 18.81 1988 3.90 5.36 9.77 12.78 26.75 33.60 35.34 33.18 26.99 17.67 9.81 5.80 18.41 1989 4.49 5.23 8.63 12.48 23.31 35.60 37.23 33.64 26.44 18.96 7.24 4.45 18.14 1990 3.46 5.79 11.97 15.89 28.01 34.74 35.49 35.03 29.25 18.85 11.58 6.82 19.74 1991 4.28 4.94 7.25 13.60 20.85 28.59 34.27 32.87 25.04 16.23 ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 3.04 4.99 7.24 12.65 24.32 38.00 40.17 ****** ****** ****** 8.31 6.66 ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 4.83 5.03 4.39 7.92 17.64 27.62 35.53 32.20 24.34 17.48 9.23 3.36 15.80 1996 3.43 5.36 4.78 8.37 16.33 21.41 23.73 23.37 21.99 16.70 10.62 5.56 13.47 1997 4.14 4.40 5.46 9.36 17.17 29.43 28.10 27.69 18.46 10.72 5.09 3.27 13.61 1998 2.60 3.57 4.03 7.23 11.16 22.51 25.36 26.70 18.79 14.83 9.86 7.36 12.83 1999 4.04 4.93 5.88 12.58 20.37 29.76 26.89 32.24 26.27 16.82 10.96 6.47 16.44 2000 4.54 6.02 8.69 17.51 27.32 30.75 33.59 27.28 25.40 15.41 7.43 6.54 17.54 2001 4.79 5.53 7.35 15.86 25.75 30.08 35.07 27.58 25.61 13.26 9.09 5.46 17.12 2002 4.62 5.90 ****** ****** ****** 29.87 30.91 32.88 23.60 18.38 8.99 5.66 ****** 2003 5.23 6.81 7.14 11.95 20.64 32.05 33.74 27.98 25.68 15.96 8.26 5.62 16.75 MEAN 4.21 5.39 8.25 12.62 21.43 29.55 31.32 28.87 23.03 15.55 9.04 5.38 16.22 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 30 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. AVERAGE OF RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 25 28 28 37 59 *** 1965 68 49 37 39 32 32 36 30 31 44 59 60 43 1966 55 57 40 34 25 25 25 28 31 36 36 48 37 1967 54 56 42 41 31 24 25 24 27 34 59 57 40 1968 50 59 43 43 39 31 27 29 31 37 47 58 41 1969 67 50 43 52 41 37 34 31 39 44 63 57 47 1970 68 57 51 40 36 33 34 38 38 43 45 57 45 1971 55 55 37 43 32 25 25 29 29 32 41 51 38 1972 71 66 61 48 36 28 26 29 28 34 42 54 44 1973 62 46 44 31 31 27 37 31 33 41 50 62 41 1974 75 74 77 58 55 49 43 59 57 55 57 75 61 1975 73 68 73 73 69 61 59 61 62 57 67 74 66 1976 74 77 75 57 45 55 55 58 59 68 75 72 64 1977 77 68 51 43 45 43 54 48 53 68 57 71 57 1978 78 76 44 39 32 31 44 30 30 34 54 57 46 1979 60 58 39 35 25 26 26 27 30 36 36 51 37 1980 56 60 56 36 26 26 25 27 30 36 39 54 39 1981 63 61 50 45 30 24 24 27 29 36 37 49 40 1982 58 61 50 37 25 25 24 28 30 36 45 53 39 1983 57 62 44 37 25 25 25 26 28 31 41 55 38 1984 60 62 49 32 28 24 24 27 29 34 38 54 38 1985 54 52 41 32 29 26 34 35 35 45 63 77 44 1986 *** *** *** 60 33 25 24 27 30 33 56 72 *** 1987 59 48 53 40 31 22 24 27 27 37 46 45 38 1988 61 59 48 48 28 24 31 26 30 34 43 55 41 1989 57 52 48 46 33 23 24 26 29 32 60 62 41 1990 66 54 34 35 23 22 24 23 24 33 38 47 35 1991 60 56 54 42 31 26 28 24 30 34 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 71 59 52 42 27 15 16 *** *** *** 52 50 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 59 60 67 60 39 33 28 29 31 40 51 71 47 1996 67 60 66 58 45 44 41 41 35 34 39 54 49 1997 62 60 57 52 39 29 40 40 47 58 67 69 52 1998 72 69 73 68 64 44 46 42 51 42 44 45 55 1999 61 64 60 44 39 33 39 28 32 35 41 49 44 2000 62 53 50 38 29 36 34 38 35 38 53 53 43 2001 54 56 56 41 32 31 31 36 34 48 48 59 44 2002 58 56 *** *** *** 28 24 27 38 35 50 56 *** 2003 55 53 55 49 36 31 37 35 35 40 52 57 45 MEAN 63 59 52 45 35 31 32 33 35 40 49 58 44 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 31 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. AVERAGE OF MAXIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 38 41 40 51 78 *** 1965 81 69 52 53 48 46 50 41 45 60 83 86 60 1966 72 73 58 49 35 38 36 42 45 53 46 62 51 1967 70 70 53 53 42 33 36 34 37 48 75 72 52 1968 64 75 60 54 52 45 41 40 41 50 61 73 55 1969 81 68 53 64 53 52 44 46 49 56 71 66 59 1970 78 71 65 51 49 46 44 50 46 50 54 69 56 1971 66 68 49 57 44 38 37 41 38 38 58 67 50 1972 86 86 76 59 45 37 36 40 40 47 54 67 56 1973 75 61 57 37 38 35 46 36 37 47 57 78 50 1974 84 83 83 63 60 58 49 67 65 60 64 82 68 1975 80 74 81 79 75 73 68 71 75 67 73 82 75 1976 83 85 82 64 55 68 68 75 75 77 84 81 75 1977 85 77 60 56 63 66 67 53 62 74 64 78 67 1978 83 82 59 52 45 44 57 41 44 50 65 71 58 1979 77 72 58 49 36 40 37 41 45 52 46 65 52 1980 72 75 69 47 36 39 39 41 44 56 55 69 54 1981 76 78 67 58 40 34 36 41 43 54 49 64 53 1982 74 75 69 51 33 38 36 42 45 51 57 66 53 1983 73 74 65 50 35 38 36 40 41 45 56 71 52 1984 76 75 66 42 37 35 36 41 43 48 50 76 52 1985 70 68 56 43 40 34 45 48 48 59 79 87 56 1986 *** *** *** 75 44 36 36 38 43 46 70 83 *** 1987 74 66 76 61 48 36 34 39 43 53 56 56 54 1988 72 75 66 63 43 37 45 40 46 48 57 69 55 1989 71 68 62 63 49 34 36 35 39 48 74 75 55 1990 77 72 53 48 34 34 34 34 35 55 62 63 50 1991 71 66 62 56 38 35 39 33 37 52 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 83 71 69 59 44 25 25 *** *** *** 60 67 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 77 74 78 75 55 46 46 40 45 58 64 81 62 1996 81 73 76 66 59 63 53 58 49 49 51 65 62 1997 76 74 69 68 55 45 56 55 62 66 75 75 65 1998 79 79 80 78 71 53 54 54 63 53 54 57 65 1999 70 79 71 60 54 50 52 44 51 48 48 59 57 2000 73 66 59 57 47 53 45 53 52 53 64 65 57 2001 70 73 71 52 49 46 44 53 51 59 58 70 58 2002 68 67 *** *** *** 39 32 38 52 54 67 71 *** 2003 67 71 68 60 50 45 53 57 61 59 70 71 61 MEAN 75 73 66 58 47 44 44 45 48 54 62 71 57 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 32 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. AVERAGE OF MINIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 14 14 18 22 42 *** 1965 52 29 21 25 20 16 19 17 14 22 27 31 24 1966 33 40 21 23 17 16 16 18 20 23 27 35 24 1967 40 44 31 31 23 18 18 18 20 25 45 43 30 1968 37 45 31 33 28 18 18 19 20 23 33 44 29 1969 55 34 33 43 30 26 26 21 31 34 55 49 36 1970 59 45 41 32 26 25 26 29 31 36 36 45 36 1971 45 46 28 33 23 18 18 21 21 26 29 38 29 1972 60 50 47 38 30 21 18 22 20 24 33 42 34 1973 48 34 33 26 23 18 28 25 29 35 43 50 33 1974 67 64 70 53 50 40 38 51 48 50 49 68 54 1975 67 61 67 67 62 48 50 50 45 47 60 66 58 1976 64 69 68 51 37 43 45 44 43 58 65 61 54 1977 69 59 43 33 33 29 41 43 43 62 51 65 48 1978 71 69 26 25 20 15 28 16 18 21 45 43 33 1979 46 41 22 24 17 16 17 18 19 23 27 37 26 1980 42 45 44 26 18 16 17 17 19 21 28 41 28 1981 51 44 34 34 21 16 14 18 19 22 27 34 28 1982 46 43 32 27 18 17 17 17 19 24 36 41 28 1983 44 48 25 26 17 16 17 15 14 20 27 38 26 1984 43 49 33 24 21 17 16 18 19 21 24 37 27 1985 42 35 25 23 20 18 27 25 25 35 45 67 32 1986 *** *** *** 43 26 19 17 20 19 22 46 61 *** 1987 43 35 36 26 21 14 17 19 16 25 37 36 27 1988 52 46 35 35 19 16 20 17 18 21 27 40 29 1989 44 39 37 33 21 16 16 19 21 23 48 50 31 1990 55 40 22 25 16 15 18 16 17 20 24 35 25 1991 48 47 46 33 25 20 21 18 24 24 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 58 47 36 28 15 8 10 *** *** *** 43 37 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 44 47 55 44 25 20 16 18 22 25 38 59 34 1996 55 48 57 48 33 26 25 21 18 23 25 38 35 1997 45 41 43 34 21 12 22 28 35 49 59 62 38 1998 65 61 66 58 58 30 37 28 37 29 29 33 44 1999 51 49 45 19 21 15 22 13 14 17 32 39 28 2000 49 36 39 19 14 24 26 26 17 21 38 40 29 2001 38 37 40 29 17 18 20 22 16 36 37 47 30 2002 46 44 *** *** *** 17 18 20 27 17 36 41 *** 2003 42 38 40 37 20 18 23 17 17 16 26 41 28 MEAN 50 46 39 34 25 20 23 23 23 28 37 45 33 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 33 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. NO. OF DAYS PRECIPITATION EQUAL OR MORE THAN 5 MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1964 *** *** *** *** *** *** *** 0 0 0 0 3 *** 1965 8 2 0 0 0 0 0 0 0 0 0 0 10 1966 1 2 0 0 0 0 0 0 0 0 0 0 3 1967 2 5 0 1 0 0 0 0 0 0 3 1 12 1968 1 4 2 2 0 0 0 0 0 0 0 3 12 1969 6 1 1 4 0 0 0 0 0 1 2 0 15 1970 3 1 1 1 0 0 0 1 0 0 0 1 8 1971 2 2 0 2 0 0 0 0 0 0 0 4 10 1972 6 1 6 3 1 0 0 0 0 0 0 0 17 1973 3 0 1 0 0 0 2 0 0 0 0 2 8 1974 4 2 4 0 0 0 0 0 0 0 0 4 14 1975 3 0 0 3 2 0 0 0 0 0 0 3 11 1976 3 5 7 1 0 0 1 0 0 1 3 1 22 1977 4 0 1 1 0 0 0 0 0 0 1 0 7 1978 2 2 4 0 0 0 0 0 0 0 5 2 15 1979 3 2 4 0 0 0 0 0 0 0 0 4 13 1980 2 3 6 1 0 0 0 0 0 0 0 1 13 1981 3 2 3 1 2 0 0 0 0 0 0 1 12 1982 3 2 5 3 0 0 0 0 0 1 3 2 19 1983 3 2 3 3 0 0 0 0 0 0 0 0 11 1984 2 1 5 0 3 0 0 0 0 0 0 4 15 1985 4 1 0 0 1 0 0 0 0 0 0 3 9 1986 *** *** *** 2 0 0 0 0 0 0 0 6 *** 1987 0 1 4 0 0 0 0 1 0 0 0 1 7 1988 3 4 1 3 0 0 2 0 0 0 0 2 15 1989 0 0 3 2 0 0 0 0 0 0 2 3 10 1990 3 2 0 1 0 0 0 0 0 0 0 0 6 1991 6 2 4 1 0 0 0 0 0 0 *** *** *** 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 3 5 2 1 0 0 0 *** *** *** 0 0 *** 1994 *** *** *** *** *** *** *** *** *** *** *** *** *** 1995 0 3 2 4 0 0 0 0 0 1 0 5 15 1996 0 2 5 2 0 1 0 0 0 0 0 0 10 1997 4 1 3 1 0 0 1 0 0 1 0 1 12 1998 4 2 3 0 0 0 0 0 0 0 0 0 9 1999 2 5 5 0 0 0 0 0 0 0 0 0 12 2000 6 0 0 0 0 0 0 0 0 0 2 1 9 2001 1 2 3 0 0 0 0 0 0 0 0 2 8 2002 2 3 *** *** *** 0 0 0 0 0 0 1 *** 2003 3 3 7 2 0 0 0 1 0 0 0 2 18 MEAN 3 2 3 1 0 0 0 0 0 0 1 2 12 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 34 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. HIGHEST AND LOWEST LIMITS FOR 40 YEARS DURING 1964-2003 ELE- JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MENT --------------------------------------------------------------------------------------------- NO. HIG. DRY 03 11.2 18.2 19.2 21.2 27.2 29.0 34.0 35.0 28.0 21.2 16.2 11.2 1 YEAR - DAY 1968- 7 1977-24 1977-18 1991-28 1991- 4 1973-11 1968-23 1968- 6 1964-14 1977-17 1973-13 1970- 9 LOW. DRY 03 -6.0 -5.2 -2.0 3.0 3.2 16.0 18.2 14.2 10.2 6.2 -2.0 -4.4 2 YEAR - DAY 1973- 2 1989-15 1975-10 1987- 9 1976- 2 1968-24 1977- 8 1975- 1 1976- 1 1987-18 1966-27 1990-28 HIG. WET 03 9.2 15.0 17.0 18.0 20.0 21.0 22.8 22.4 20.0 18.0 11.2 10.0 3 YEAR - DAY 1993- 9 1977-28 1974-30 1976-16 1965-29 1974- 9 1973-21 1985- 3 1983-14 1977-31 1973-12 1986- 2 LOW. WET 03 -7.4 -6.8 -3.0 1.2 2.0 8.8 10.4 8.8 5.0 1.4 -3.4 -6.0 4 YEAR - DAY 2001-30 1989- 7 1975-10 1967- 2 1976- 2 1990- 2 1984-22 1986-12 1991-28 1987-18 1966-27 1972-27 HIG. DRY 09 20.0 24.4 28.4 32.0 36.8 40.2 41.2 39.4 36.8 33.6 26.4 21.8 5 YEAR - DAY 1966-30 1977-26 1977-19 1987-27 1970-29 1986-23 2000-11 1970-11 1987- 8 2001- 3 1999- 1 1977-25 LOW. DRY 09 -5.0 2.0 4.8 10.6 12.0 25.6 25.8 23.8 20.0 13.8 8.0 2.0 6 YEAR - DAY 1973- 3 1968-13 1991-16 1968-28 1983-10 1995- 1 1996-16 1968-27 1968-18 1969-30 1987-29 1990-28 HIG. WET 09 14.0 20.0 24.0 22.2 30.0 35.8 30.0 35.8 28.0 26.0 20.0 19.0 7 YEAR - DAY 1978-22 1977-26 1974- 2 1998-21 1975-12 1974- 8 1973-19 2003-14 1975- 5 1977-13 1977- 1 1977-24 LOW. WET 09 -5.0 0.0 2.4 5.2 8.6 12.6 14.6 13.2 10.8 7.8 3.4 -1.0 8 YEAR - DAY 1973- 3 1968- 4 1973-12 1967- 1 1993- 1 1990- 2 1981-12 1986-31 1965-30 1987-18 1987-29 1990-28 HIG. DRY 15 15.0 20.4 23.4 27.2 32.6 38.2 37.6 35.4 34.4 28.8 21.0 19.8 9 YEAR - DAY 1967-18 1977-26 1977-19 1977-15 1989-30 1986-26 1989-15 1990-13 1987- 9 1999- 1 1966- 4 1973- 2 LOW. DRY 15 -5.0 1.4 2.0 9.2 8.0 16.8 20.2 16.2 14.0 10.0 5.6 -2.0 10 YEAR - DAY 1973- 3 1972-25 1975-14 1967- 1 1976- 2 1999-11 1975-31 1975-31 1978-24 1980-18 2000-25 1972-27 HIG. WET 15 12.0 18.0 19.4 19.8 22.0 26.0 30.0 22.8 23.8 19.2 16.4 15.8 11 YEAR - DAY 1980-24 1977-26 1973-29 1966-18 1975-23 1976-17 1976-16 1997-15 1998- 9 1969- 2 1977-11 1977- 3 LOW. WET 15 -5.0 -1.4 -1.0 4.8 7.0 11.2 13.0 11.2 8.0 5.5 1.4 -3.0 12 YEAR - DAY 1973- 3 1989- 5 1975-14 1967- 2 1976- 2 1990- 2 1993-31 1964-30 1981-29 1964-18 2000-26 1972-27 HIG. MIN. 10.0 14.5 16.5 19.5 21.5 25.5 27.5 25.5 25.0 20.0 13.5 10.5 13 YEAR - DAY 1969-24 1977-28 1974-30 1991-28 1991-15 1989-29 1988-17 1985- 1 1970- 1 1977-17 1977-12 1988-20 LOW. MIN. -9.0 -6.5 -4.0 -0.5 1.5 9.0 11.0 8.0 6.0 0.0 -6.0 -9.0 14 YEAR - DAY 1973- 9 1989-15 1975-10 1967- 2 1976- 2 1967- 3 1979- 6 1975- 1 1974-22 1996-22 1966-29 1964- 5 HIG. MAX. 22.0 25.0 32.0 35.0 39.0 41.5 42.5 41.0 42.0 34.5 27.2 23.0 15 YEAR - DAY 1966-27 1977-26 1969-21 1969-25 1970-23 1986-25 2001-27 1970-10 1976-22 2001- 3 1983- 1 1977-11 LOW. MAX. -1.0 4.0 6.0 14.0 16.0 26.5 27.5 29.2 25.0 14.0 9.0 3.0 16 YEAR - DAY 1973- 3 1968- 5 1991-16 1995- 1 1976- 2 1995- 1 1996-16 1974-26 1971-23 1969-30 1987-29 1990-28 HIG. PPTN 64.5 89.6 58.0 29.0 17.0 13.0 15.0 12.0 0.0 11.5 25.0 145.5 17 YEAR - DAY 1978-11 1995- 6 1999- 2 1995-24 1984- 9 1996-15 1988-26 2003- 1 999-** 1976-28 1976- 3 1986- 2 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 35 STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. HIGHEST LIMITS OF ABSOLUTE DIFFERENCES FOR 40 YEARS DURING 1964-2003 ELE- JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MENT --------------------------------------------------------------------------------------------- NO. DRY 09 - DRY 03 18.4 17.6 18.0 17.0 17.2 18.6 18.0 20.0 24.0 20.0 21.2 19.0 18 YEAR - DAY 1978-27 1981- 1 1980- 5 1987-27 1975-29 1975-12 1976- 6 1976-14 1976- 1 1989-10 2001- 4 1998-22 DRY 15 - DRY 09 12.0 11.0 16.0 14.0 14.6 19.6 17.0 17.0 17.0 14.2 13.8 12.0 19 YEAR - DAY 1973-13 1983- 2 1998-29 1998-15 2001-29 1999-11 1977- 5 1975-27 1975-28 1965-22 1965- 4 1964-25 DRY 15 - DRY 03 13.2 13.4 13.2 13.8 13.4 17.2 15.2 17.4 17.8 15.8 12.8 17.2 20 YEAR - DAY 1977-28 1990-17 1989-27 1988-18 1990-15 1975- 9 1976- 6 1976- 4 1976- 5 1989-10 1966-19 1979- 1 WET 09 - WET 03 17.0 16.2 15.0 13.0 16.0 16.2 13.0 22.8 17.0 13.0 13.0 17.0 21 YEAR - DAY 1978-27 1980-27 1974- 2 1972- 2 1975-12 1969-15 1975- 9 2003-14 1975- 5 1977- 2 1998-21 1977-24 WET 15 - WET 09 8.0 11.0 14.0 11.6 12.0 15.8 12.0 23.6 14.0 13.0 10.0 11.0 22 YEAR - DAY 1973-13 1980-27 1976-13 1998-15 1975-12 1974- 8 1975-17 2003-14 1975- 5 1977-13 1977- 1 1964-25 WET 15 - WET 03 12.0 13.2 13.4 9.0 7.0 9.0 14.0 9.0 11.2 13.0 10.0 13.0 23 YEAR - DAY 1977-28 1990-17 1973-29 1966-18 1975-29 1976-16 1976-16 1974- 1 1978-22 1987-17 1973-19 1975-30 DAY BY DAY DRY 03 10.7 13.2 11.8 10.8 15.0 7.0 11.8 12.0 9.0 9.0 8.0 9.6 24 YEAR - DAY 1989-30 1988- 4 1966-21 1971-26 1976- 3 1968-25 1968-23 1968- 6 1982- 1 1976- 1 1975- 1 1986-21 DAY BY DAY WET 03 11.0 9.8 9.0 7.8 12.0 7.0 7.8 6.4 7.0 9.0 10.0 9.6 25 YEAR - DAY 1978- 4 1968- 8 1979-22 1974- 1 1976- 3 1968-25 1973-22 1986- 6 1983-14 1976- 1 1977- 1 1987-30 DAY BY DAY DRY 09 12.0 9.6 11.0 10.2 15.0 6.1 10.8 10.2 11.8 10.0 10.0 12.0 26 YEAR - DAY 1973- 2 1981-28 1973-13 1969- 5 1983-10 1967-18 1995-23 1968-27 1968-18 1969-30 1978-12 1965- 4 DAY BY DAY WET 09 8.4 11.0 12.0 9.0 11.0 12.8 10.0 18.0 7.0 5.2 9.0 6.2 27 YEAR - DAY 1993-14 1968- 8 1974- 2 1972- 1 1969-18 1974- 9 1976-23 2003-17 1998- 6 1976-28 1978-12 1979-30 DAY BY DAY DRY 15 8.8 8.2 10.2 10.0 14.8 12.0 12.2 9.8 12.2 11.0 9.8 6.6 28 YEAR - DAY 1993-14 1968- 8 1969-20 1995-10 1976- 3 1975-11 1988-25 1986-14 1976- 5 1964- 6 1978-20 1986-19 DAY BY DAY WET 15 10.0 9.0 10.4 8.6 9.0 6.0 6.2 6.4 10.2 10.6 9.0 7.4 29 YEAR - DAY 1980-24 1990-17 1973-29 1966-18 1976- 2 1976-14 1980-10 1969-12 1978-22 1987-18 1977- 1 1970-15 DAY BY DAY MIN. 11.9 14.0 10.0 10.0 9.5 10.0 8.0 12.4 9.0 10.0 10.0 12.0 30 YEAR - DAY 1967-23 1968- 8 1965- 4 1969-14 1976- 3 1965-15 1967-11 1964-19 1979- 5 1976- 1 1964-28 1970-15 DAY BY DAY MAX. 11.0 9.0 12.2 10.5 12.0 7.0 9.0 6.5 9.6 10.5 10.0 8.5 31 YEAR - DAY 1973- 2 1968- 8 1973-13 1969- 5 1976- 2 1987- 3 1996-16 1974- 1 1976-23 1969-30 1982- 1 1968- 7 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C.***** ***** ***** ***** ***** ***** ***** 28.3 23.4 16.5 12.9 4.6 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** 19.3 13.8 6.6 4.0 -1.9 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** 37.3 33.0 26.5 21.8 11.0 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** ***** ***** ***** ***** 18.0 19.2 19.9 17.8 12.9 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** ***** ***** ***** ***** ***** 8.57 6.06 4.54 3.72 4.16 ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** ***** ***** ***** ***** ***** 6.73 5.40 4.71 4.29 4.09 ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** ***** ***** ***** ***** ***** 7.44 7.47 5.17 6.37 4.71 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** 12.0 7.0 2.0 -3.0 -9.0 ****** DAY ** ** ** ** ** ** ** 18 26 19 29 5 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** 39.0 35.5 32.0 25.0 17.0 ****** DAY ** ** ** ** ** ** ** 6 6 1 17 25 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** 0.0 0.0 0.0 0.0 18.5 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 16 MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** 0.0 0.0 0.0 0.0 43.9 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION ***** ***** 0.0 100.0 NO. OF DAYS WITH PRECIPITATION. *** *** *** *** *** *** *** 0 0 0 0 5 *** NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** 0 0 0 0 5 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** 0 0 0 0 2 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** *** *** *** *** *** 38 33 34 39 75 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** *** *** *** *** *** 15 15 19 23 44 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** *** *** *** *** *** 21 35 32 49 59 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** 0 0 0 0 11 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** 11 1 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** 0 0 0 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** 27 30 8 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** 0 0 0 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** 0 0 0 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** *** *** *** *** *** *** 0 0 0 3 22 *** DATE OF START AND END FREEZING START = 28 NOV. END = 31 DEC. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.1 9.6 15.1 14.4 21.3 24.9 26.7 25.1 22.3 18.2 12.9 7.3 16.9 AVERAGE OF MINIMUM TEMPERATURE IN C. 0.1 2.0 7.1 6.3 11.3 15.3 17.5 15.9 12.0 8.3 3.9 -1.6 8.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.2 17.2 23.0 22.6 31.3 34.4 35.9 34.3 32.7 28.0 21.8 16.3 25.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.1 15.2 15.9 16.3 20.0 19.1 18.4 18.4 20.7 19.7 17.9 17.9 17.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 5.33 5.54 5.61 6.38 9.46 10.16 10.93 8.17 7.11 6.42 5.71 3.74 7.05 MEAN OF MIXING RATIO AT 09 GMT. 5.09 4.06 3.79 4.89 7.07 6.46 8.13 7.18 5.15 6.12 5.24 4.07 5.61 MEAN OF MIXING RATIO AT 15 GMT. 5.26 4.97 5.24 5.90 6.71 9.02 11.18 8.95 8.01 7.47 7.42 6.50 7.22 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.0 -1.0 0.0 1.0 5.0 11.0 13.0 12.0 7.5 5.0 0.0 -7.0 -7.0 DAY 7 5 4 8 4 4 13 15 26 24 13 23 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.0 20.0 25.0 28.0 35.0 37.5 38.0 37.0 35.5 30.0 26.5 20.5 38.0 DAY 25 13 12 27 19 21 14 1 4 6 8 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 50.5 20.0 0.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 50.5 DAY 10 1 ** 2 ** ** ** ** ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. 204.6 33.0 0.0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 241.6 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 98.3 1.7 0.0 0.0 NO. OF DAYS WITH PRECIPITATION. 14 2 0 3 0 0 0 0 0 0 0 0 19 NO. OF DAYS PRECIPITATION EQUAL 14 2 0 3 0 0 0 0 0 0 0 0 19 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 8 2 0 0 0 0 0 0 0 0 0 0 10 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 77 66 50 48 46 44 47 38 42 56 75 66 55 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 55 32 21 26 22 16 19 18 14 22 27 32 25 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 71 48 42 42 29 35 42 34 38 54 75 81 49 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 1 0 0 0 0 0 0 0 0 0 0 5 6 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 1 2 0 0 0 0 5 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 24 30 31 31 30 1 0 0 147 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 20 8 4 0 0 0 0 0 0 0 4 25 61 DATE OF START AND END FREEZING START = 13 NOV. END = 8 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 9.5 10.0 13.2 16.6 22.2 26.3 26.9 26.5 22.8 19.2 11.5 8.2 17.8 AVERAGE OF MINIMUM TEMPERATURE IN C. 1.0 2.6 5.0 8.8 12.5 17.2 18.1 17.8 13.6 11.3 2.9 -0.0 9.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 18.1 17.3 21.4 24.4 31.8 35.5 35.8 35.3 32.1 27.1 20.1 16.4 26.3 DIFFERENCE BETWEEN AVERAGE MAXIMUM 17.1 14.7 16.4 15.7 19.3 18.3 17.7 17.5 18.5 15.8 17.2 16.4 17.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.21 4.39 4.89 5.91 7.03 8.79 8.45 8.69 6.88 6.95 4.18 3.86 6.19 MEAN OF MIXING RATIO AT 09 GMT. 4.56 5.17 3.94 5.35 5.67 7.11 7.35 8.14 7.29 6.24 4.94 4.72 5.87 MEAN OF MIXING RATIO AT 15 GMT. 6.22 5.88 4.76 5.86 5.25 6.95 7.49 7.58 6.40 6.12 4.83 4.92 6.02 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -2.0 -0.5 0.5 3.0 8.5 13.0 14.0 11.0 10.5 7.5 -6.0 -3.0 -6.0 DAY 1 12 4 5 2 19 6 20 22 25 29 3 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 22.0 23.0 27.0 29.5 35.5 38.0 38.5 37.5 35.0 31.0 23.5 21.0 38.5 DAY 27 1 12 30 24 30 25 3 1 3 1 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 5.0 8.0 0.0 4.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 8.0 DAY 14 24 ** 12 ** ** ** ** ** ** ** 27 MONTHLY TOTAL PRECIPITATION IN MM. 6.0 23.0 0.0 6.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 36.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 79.5 17.8 0.0 2.7 NO. OF DAYS WITH PRECIPITATION. 2 6 0 2 0 0 0 0 0 0 0 1 11 NO. OF DAYS PRECIPITATION EQUAL 2 5 0 2 0 0 0 0 0 0 0 1 10 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 65 64 56 44 35 38 36 40 44 52 45 58 48 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 33 42 22 26 19 17 17 20 21 24 29 36 26 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 65 65 41 34 21 20 20 24 27 33 32 50 36 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 3 0 3 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 5 4 0 0 0 0 12 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 23 30 31 31 28 5 0 0 148 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 14 4 0 0 0 0 0 0 0 0 6 21 45 DATE OF START AND END FREEZING START = 17 NOV. END = 25 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.3 8.0 10.6 14.2 20.1 22.5 28.8 26.9 23.3 18.0 11.9 6.8 16.5 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.2 2.1 3.1 6.5 10.4 11.5 20.2 17.9 13.6 8.9 5.0 0.0 8.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.9 13.9 18.2 21.9 29.8 33.6 37.5 35.9 33.0 27.1 18.9 13.6 24.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 15.1 11.8 15.1 15.4 19.4 22.1 17.3 18.0 19.4 18.2 13.9 13.6 16.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.07 4.86 4.59 5.16 6.75 6.45 8.96 7.29 7.48 6.76 6.03 4.35 6.06 MEAN OF MIXING RATIO AT 09 GMT. 4.41 5.01 4.40 5.33 6.71 6.84 8.50 7.56 8.21 6.86 6.87 5.10 6.32 MEAN OF MIXING RATIO AT 15 GMT. 4.45 5.00 4.40 5.10 6.38 6.62 8.09 7.21 6.74 6.14 7.09 5.15 6.03 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.5 -3.0 0.0 -0.5 5.0 9.0 12.0 13.5 9.0 3.0 0.0 -5.0 -5.5 DAY 24 3 30 2 1 3 2 29 26 29 29 26 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 20.5 19.5 22.5 27.0 34.0 37.5 39.5 38.0 35.5 29.5 25.0 18.0 39.5 DAY 18 26 7 21 17 25 14 5 4 11 1 18 24 HOUR MAXIMUM PRECIPITATION IN MM. 7.0 20.5 0.0 7.0 0.0 0.0 0.0 0.0 0.0 0.0 17.0 12.0 20.5 DAY 4 18 ** 25 ** ** ** ** ** ** 17 8 MONTHLY TOTAL PRECIPITATION IN MM. 13.0 57.0 0.0 7.0 0.0 0.0 0.0 0.0 0.0 0.0 41.5 18.0 136.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 51.3 5.1 0.0 43.6 NO. OF DAYS WITH PRECIPITATION. 2 6 0 1 0 0 0 0 0 0 7 3 19 NO. OF DAYS PRECIPITATION EQUAL 2 6 0 1 0 0 0 0 0 0 7 3 19 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 2 0 0 0 0 0 0 0 0 2 1 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 70 69 53 51 41 32 35 34 37 48 71 68 51 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 41 46 32 33 23 19 19 18 22 26 47 45 31 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 49 52 40 39 28 23 22 20 21 30 61 57 37 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 4 0 0 0 0 0 0 0 0 0 0 2 6 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 15 3 1 0 0 0 19 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 21 30 31 31 29 0 0 0 142 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 24 7 2 2 0 0 0 0 0 0 2 19 56 DATE OF START AND END FREEZING START = 29 NOV. END = 3 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.9 6.2 13.2 16.0 20.2 25.4 26.8 27.4 23.1 19.1 13.5 9.0 17.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.1 0.8 5.9 9.3 12.4 16.0 18.3 18.8 13.0 10.0 5.7 3.1 9.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.9 11.6 20.5 22.7 28.1 34.9 35.3 36.0 33.1 28.3 21.3 15.0 25.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.0 10.8 14.6 13.4 15.7 18.9 17.0 17.2 20.1 18.3 15.6 11.9 15.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.99 4.67 5.75 6.21 7.82 8.50 8.42 8.03 6.34 5.84 5.46 5.18 6.35 MEAN OF MIXING RATIO AT 09 GMT. 4.15 4.58 5.36 6.75 7.78 7.55 8.06 9.31 7.52 6.85 6.14 5.61 6.64 MEAN OF MIXING RATIO AT 15 GMT. 4.63 4.83 4.94 5.85 7.38 8.15 7.62 8.88 8.59 7.55 6.61 5.79 6.74 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.0 -5.5 1.5 3.5 6.5 11.5 14.0 14.5 9.0 7.5 1.5 0.0 -5.5 DAY 20 7 26 5 2 11 24 30 26 22 21 10 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 19.0 17.0 26.5 27.5 33.0 37.5 38.0 38.0 36.0 32.5 25.5 22.0 38.0 DAY 6 28 14 17 24 27 7 19 4 1 1 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 12.5 45.0 12.0 14.0 0.0 0.0 0.0 0.0 0.0 0.0 3.5 30.0 45.0 DAY 16 13 8 28 ** ** ** ** ** ** 18 7 MONTHLY TOTAL PRECIPITATION IN MM. 16.0 94.0 27.5 23.0 0.0 0.0 0.0 0.0 0.0 0.0 3.5 49.0 213.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 64.6 10.8 0.0 24.6 NO. OF DAYS WITH PRECIPITATION. 4 5 5 2 0 0 0 0 0 0 1 4 21 NO. OF DAYS PRECIPITATION EQUAL 4 5 5 2 0 0 0 0 0 0 1 4 21 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 2 2 1 0 0 0 0 0 0 0 1 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 63 74 59 53 51 44 40 37 38 48 60 72 53 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 38 47 33 36 29 19 19 22 21 24 33 45 31 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 50 57 37 39 37 30 23 28 35 40 47 57 40 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 1 2 0 0 0 0 0 0 0 0 0 0 3 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 5 7 0 0 0 0 15 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 10 30 31 31 28 10 0 0 140 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 17 13 0 0 0 0 0 0 0 0 0 5 35 DATE OF START AND END FREEZING START = 10 DEC. END = 27 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.7 8.6 16.0 16.7 21.9 25.3 28.6 27.4 22.6 19.2 10.7 9.2 17.7 AVERAGE OF MINIMUM TEMPERATURE IN C. 1.9 1.7 8.9 9.8 13.4 15.7 19.2 19.3 13.7 10.5 4.1 1.9 10.0 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.6 15.4 23.1 23.5 30.4 34.9 38.0 35.5 31.5 27.9 17.3 16.5 25.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.7 13.7 14.2 13.7 17.0 19.2 18.8 16.2 17.8 17.4 13.2 14.6 15.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 5.18 4.65 5.84 7.02 8.69 10.00 10.19 9.96 7.72 7.18 5.44 4.42 7.19 MEAN OF MIXING RATIO AT 09 GMT. 5.56 4.29 7.12 9.27 9.44 11.36 12.65 10.21 10.20 8.75 8.73 7.46 8.75 MEAN OF MIXING RATIO AT 15 GMT. 5.68 4.88 6.21 8.87 9.92 10.38 11.85 8.24 9.96 8.79 7.43 6.03 8.19 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -2.5 -4.0 4.0 3.5 10.0 14.0 15.0 15.0 10.5 7.5 -1.0 -1.5 -4.0 DAY 31 1 2 15 9 11 15 23 16 29 24 12 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.5 19.0 32.0 35.0 35.0 38.0 40.5 39.5 35.0 31.5 22.0 19.5 40.5 DAY 23 19 21 25 18 30 25 5 10 1 3 13 24 HOUR MAXIMUM PRECIPITATION IN MM. 11.5 5.5 17.0 16.5 0.0 0.0 0.0 0.0 0.0 8.0 10.0 0.0 17.0 DAY 25 12 19 6 ** ** ** ** ** 31 8 ** MONTHLY TOTAL PRECIPITATION IN MM. 51.0 7.5 22.0 55.0 0.0 0.0 0.0 0.0 0.0 8.0 18.5 0.0 162.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 49.7 34.0 0.0 16.4 NO. OF DAYS WITH PRECIPITATION. 8 2 3 5 0 0 0 0 0 1 3 0 22 NO. OF DAYS PRECIPITATION EQUAL 8 2 3 5 0 0 0 0 0 1 3 0 22 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 0 1 3 0 0 0 0 0 0 1 0 6 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 80 67 53 59 52 49 43 45 48 55 66 64 57 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 55 34 36 46 31 28 27 24 31 34 59 54 38 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 66 49 39 52 40 33 32 24 38 43 63 53 44 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 1 0 0 0 0 0 0 0 0 0 0 1 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 12 10 0 0 0 0 22 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 1 1 17 30 31 31 27 12 0 0 150 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 5 0 0 0 0 0 5 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 8 8 0 0 0 0 0 0 0 0 5 9 30 DATE OF START AND END FREEZING START = 24 NOV. END = 17 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.5 9.9 12.3 18.9 23.0 27.7 29.1 29.6 25.5 18.4 13.2 8.1 18.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.3 2.6 5.1 10.5 13.2 18.0 20.5 20.8 16.8 8.3 3.2 0.7 9.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.2 17.1 19.6 27.3 32.9 37.5 37.8 38.5 34.2 28.5 23.3 15.5 26.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.5 14.5 14.5 16.8 19.7 19.5 17.3 17.7 17.4 20.2 20.0 14.8 17.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.45 5.04 5.59 6.46 8.07 9.87 11.34 13.21 9.34 6.05 4.45 4.53 7.37 MEAN OF MIXING RATIO AT 09 GMT. 6.07 6.58 6.66 9.00 9.65 12.46 12.67 14.83 12.54 11.50 7.76 6.43 9.68 MEAN OF MIXING RATIO AT 15 GMT. 5.20 5.92 6.03 7.32 8.79 11.03 11.37 12.76 10.97 8.51 6.42 5.47 8.32 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.0 -1.0 1.0 6.0 6.5 15.0 16.5 17.5 9.0 5.0 1.0 -5.0 -5.0 DAY 30 4 8 1 9 13 27 1 30 26 30 17 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.0 20.0 27.0 31.0 39.0 40.0 39.5 41.0 37.5 33.0 27.0 21.0 41.0 DAY 6 21 31 18 23 28 3 10 1 1 2 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 15.0 6.5 8.0 8.0 0.0 0.0 0.0 8.0 0.0 0.0 0.0 5.5 15.0 DAY 12 16 6 23 ** ** ** 16 ** ** ** 14 MONTHLY TOTAL PRECIPITATION IN MM. 39.0 10.5 14.5 8.0 0.0 0.0 0.0 12.0 0.0 0.0 0.0 5.5 89.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 71.5 8.9 13.4 6.1 NO. OF DAYS WITH PRECIPITATION. 4 4 3 1 0 0 0 2 0 0 0 1 15 NO. OF DAYS PRECIPITATION EQUAL 4 3 3 1 0 0 0 2 0 0 0 1 14 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 0 0 0 0 0 0 0 0 0 0 0 3 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 78 69 65 49 48 43 44 50 45 48 53 68 55 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 62 46 41 35 28 26 26 30 32 42 38 49 38 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 63 55 48 36 32 31 31 35 37 40 44 55 42 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 2 0 0 0 0 0 0 0 0 0 0 4 6 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 13 15 7 0 0 0 38 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 3 24 30 31 31 30 10 0 0 159 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 0 6 0 0 0 0 7 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 20 4 0 0 0 0 0 0 0 0 0 20 44 DATE OF START AND END FREEZING START = 1 DEC. END = 5 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1971 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.0 7.8 13.0 16.7 23.3 26.5 29.1 28.5 23.3 17.7 12.6 8.8 17.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.5 0.8 5.0 9.4 14.4 17.6 21.5 20.5 15.8 10.7 4.3 0.9 9.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.5 14.9 21.1 24.0 32.2 35.3 36.7 36.5 30.8 24.7 20.9 16.6 25.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 15.0 14.1 16.1 14.6 17.8 17.7 15.2 16.0 15.1 14.0 16.6 15.7 15.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.41 4.60 4.54 6.62 7.74 7.71 8.64 9.51 6.81 4.78 5.15 4.50 6.17 MEAN OF MIXING RATIO AT 09 GMT. 5.25 5.48 5.06 7.56 8.26 7.22 8.26 9.92 7.69 6.16 5.31 5.17 6.78 MEAN OF MIXING RATIO AT 15 GMT. 4.78 4.82 4.38 6.08 6.88 6.17 7.03 7.73 6.43 5.27 4.72 4.97 5.77 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.5 -5.5 1.0 4.0 8.0 14.0 17.5 17.0 10.0 8.0 0.1 -3.0 -5.5 DAY 26 3 1 20 1 5 1 14 23 28 14 24 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.0 20.0 23.5 29.5 35.0 38.0 38.0 38.0 36.5 28.0 25.5 20.5 38.0 DAY 4 22 14 24 27 24 8 7 1 1 1 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 6.5 45.0 0.0 6.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 7.0 45.0 DAY 23 14 ** 7 ** ** ** ** ** ** 9 20 MONTHLY TOTAL PRECIPITATION IN MM. 12.5 57.5 0.0 15.1 0.0 0.0 0.0 0.0 0.0 0.0 5.0 28.0 118.1 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 59.3 12.8 0.0 27.9 NO. OF DAYS WITH PRECIPITATION. 3 3 0 9 3 0 0 0 0 0 2 5 25 NO. OF DAYS PRECIPITATION EQUAL 3 3 0 4 0 0 0 0 0 0 2 5 17 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 2 0 0 0 0 0 0 0 0 0 0 2 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 63 66 48 55 44 38 37 41 37 35 57 63 49 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 47 48 31 37 25 18 19 22 25 28 31 38 31 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 56 52 31 38 26 19 20 23 25 32 35 50 34 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 2 3 0 0 0 0 0 0 0 0 0 0 5 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 23 17 1 0 0 0 44 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 27 30 31 31 20 0 0 0 139 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 26 13 0 0 0 0 0 0 0 0 0 17 56 DATE OF START AND END FREEZING START = 6 DEC. END = 28 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1972 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.9 4.9 10.8 15.8 18.0 24.8 28.3 25.3 24.0 18.5 14.1 5.4 16.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.8 -1.8 4.8 8.5 8.8 14.6 19.7 16.3 14.8 8.3 5.1 -2.5 8.0 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.5 11.6 16.8 23.2 27.3 35.0 36.9 34.3 33.2 28.6 23.0 13.4 24.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.3 13.4 12.0 14.7 18.5 20.4 17.2 18.0 18.4 20.3 17.9 15.9 16.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.76 4.20 6.08 6.20 6.19 7.82 9.02 8.08 7.39 6.20 5.40 3.66 6.25 MEAN OF MIXING RATIO AT 09 GMT. 5.52 5.19 6.34 8.33 7.61 8.57 8.89 9.19 8.00 7.31 7.45 4.67 7.26 MEAN OF MIXING RATIO AT 15 GMT. 5.04 4.17 6.27 7.03 6.40 7.53 7.83 7.60 6.72 6.72 5.80 4.26 6.28 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.0 -5.0 0.0 6.0 6.0 10.0 16.0 14.0 13.0 5.0 -2.0 -7.0 -7.0 DAY 2 25 3 1 4 1 13 9 27 12 25 25 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 13.5 15.5 21.5 26.5 33.0 38.0 39.5 36.5 35.0 32.0 25.5 21.5 39.5 DAY 29 18 29 18 29 24 9 1 7 1 1 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 35.5 18.0 30.0 12.5 5.0 0.0 0.0 0.0 0.0 0.0 0.0 2.5 35.5 DAY 17 19 17 20 10 ** ** ** ** ** ** 5 MONTHLY TOTAL PRECIPITATION IN MM. 95.0 25.5 102.5 38.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 3.5 269.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 82.7 16.0 0.0 1.3 NO. OF DAYS WITH PRECIPITATION. 10 3 11 8 1 0 0 0 0 0 0 2 35 NO. OF DAYS PRECIPITATION EQUAL 10 3 11 8 1 0 0 0 0 0 0 2 35 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 4 1 3 1 0 0 0 0 0 0 0 0 9 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 85 85 73 56 43 37 36 40 40 46 53 65 55 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 61 52 49 42 32 22 19 23 21 26 35 44 36 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 68 59 60 46 32 25 23 24 24 31 39 55 41 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 6 6 0 0 0 0 0 0 0 0 0 12 24 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 7 0 0 0 0 0 7 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 10 30 31 31 30 9 0 0 141 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 20 23 1 0 0 0 0 0 0 0 4 24 72 DATE OF START AND END FREEZING START = 23 NOV. END = 3 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1973 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.6 11.4 12.3 17.7 21.7 27.3 28.6 26.1 20.0 17.1 13.1 6.9 17.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -2.5 2.0 3.1 7.9 10.8 16.5 19.0 17.3 13.7 9.0 5.0 -1.4 8.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.6 20.8 21.6 27.5 32.5 38.0 38.2 35.0 26.3 25.2 21.1 15.1 26.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.1 18.8 18.5 19.6 21.7 21.5 19.2 17.7 12.6 16.2 16.1 16.5 17.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.72 4.77 5.17 4.91 6.82 8.56 10.98 8.06 6.14 6.50 5.99 4.23 6.32 MEAN OF MIXING RATIO AT 09 GMT. 4.66 5.63 5.65 6.32 7.43 9.02 14.32 11.97 7.65 8.64 8.20 7.07 8.05 MEAN OF MIXING RATIO AT 15 GMT. 4.31 5.14 5.60 6.98 7.28 8.65 12.55 8.50 6.49 6.89 7.62 6.22 7.18 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -9.0 -2.0 -3.0 4.0 8.5 11.5 17.5 15.5 12.0 6.5 1.0 -4.0 -9.0 DAY 9 3 12 1 4 1 3 27 10 1 29 16 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 24.0 26.5 31.0 35.0 39.5 39.5 35.5 28.0 27.0 24.5 20.0 39.5 DAY 28 21 3 28 24 15 14 2 1 15 13 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 17.5 0.0 20.0 0.0 0.0 0.0 13.5 0.0 0.0 0.0 0.0 12.0 20.0 DAY 2 ** 16 ** ** ** 19 ** ** ** ** 30 MONTHLY TOTAL PRECIPITATION IN MM. 49.0 0.0 24.5 0.0 0.0 0.0 23.0 0.0 0.0 0.0 0.0 22.0 118.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 62.0 0.0 19.4 18.6 NO. OF DAYS WITH PRECIPITATION. 5 0 2 0 0 0 2 0 0 0 0 3 12 NO. OF DAYS PRECIPITATION EQUAL 5 0 2 0 0 0 2 0 0 0 0 3 12 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 0 1 0 0 0 1 0 0 0 0 1 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 72 61 55 33 36 34 45 36 34 46 53 75 48 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 49 34 35 26 23 19 29 28 30 37 44 54 34 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 67 42 42 34 32 27 36 27 34 41 54 58 41 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 11 0 0 0 0 0 0 0 0 0 0 6 17 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 1 0 0 0 0 0 1 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 2 0 0 0 0 0 0 0 0 0 0 0 2 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 7 31 30 31 31 0 0 0 0 130 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 24 6 4 0 0 0 0 0 0 0 0 25 59 DATE OF START AND END FREEZING START = 1 DEC. END = 12 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1974 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.8 6.4 17.2 17.3 22.5 26.7 29.8 23.2 19.6 15.6 9.9 5.9 16.7 AVERAGE OF MINIMUM TEMPERATURE IN C. 0.4 1.0 11.9 9.2 12.9 16.4 20.6 14.3 9.9 7.9 1.0 0.0 8.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.1 11.8 22.5 25.5 32.2 37.1 39.1 32.1 29.3 23.3 18.8 11.7 24.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.7 10.8 10.6 16.3 19.3 20.7 18.5 17.8 19.4 15.4 17.8 11.7 15.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 5.19 5.02 11.00 7.86 10.88 13.23 12.51 12.21 9.56 7.85 4.70 5.00 8.75 MEAN OF MIXING RATIO AT 09 GMT. 7.62 7.25 15.17 13.20 17.08 18.92 20.77 19.28 15.44 11.84 8.89 7.49 13.58 MEAN OF MIXING RATIO AT 15 GMT. 5.95 6.23 12.22 11.20 11.85 15.99 15.39 13.07 10.14 8.35 6.77 6.72 10.32 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -6.0 -3.0 5.0 6.5 10.0 14.0 17.5 10.0 6.0 4.5 -1.0 -4.0 -6.0 DAY 25 1 1 1 2 1 30 1 22 30 20 19 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.0 15.0 25.5 27.5 34.0 38.5 39.5 34.0 32.5 25.0 23.0 16.0 39.5 DAY 10 15 18 28 12 27 2 2 1 1 3 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 22.0 17.0 44.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20.0 44.0 DAY 25 12 2 ** ** ** ** ** ** ** ** 26 MONTHLY TOTAL PRECIPITATION IN MM. 72.5 37.5 87.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 63.0 260.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 75.8 0.0 0.0 24.2 NO. OF DAYS WITH PRECIPITATION. 11 6 6 0 0 0 0 0 0 0 0 8 31 NO. OF DAYS PRECIPITATION EQUAL 7 6 6 0 0 0 0 0 0 0 0 8 27 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 1 3 0 0 0 0 0 0 0 0 3 10 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 80 80 81 58 57 55 47 64 61 55 61 78 65 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 72 68 74 55 54 41 39 52 49 54 54 71 57 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 74 74 77 62 54 51 44 61 60 56 55 77 62 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 5 0 0 0 0 0 0 0 0 0 0 1 6 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 17 0 0 0 0 0 17 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 31 30 31 29 10 0 0 0 131 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 15 11 0 0 0 0 0 0 0 0 9 17 52 DATE OF START AND END FREEZING START = 14 NOV. END = 23 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1975 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.3 9.1 7.6 16.0 22.6 25.4 26.8 22.5 21.6 15.1 9.1 4.3 15.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -2.0 2.7 1.0 9.6 13.1 14.8 16.0 10.6 10.8 6.8 3.5 -2.0 7.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.5 15.5 14.2 22.5 32.1 36.0 37.7 34.3 32.3 23.3 14.6 10.6 23.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.5 12.8 13.2 12.9 19.0 21.2 21.7 23.7 21.5 16.5 11.1 12.6 16.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.29 5.45 4.84 8.83 11.46 12.53 13.34 10.17 10.03 7.00 5.79 3.87 8.13 MEAN OF MIXING RATIO AT 09 GMT. 6.85 8.68 8.70 14.06 24.39 22.81 24.73 21.55 16.79 10.49 7.83 7.00 14.49 MEAN OF MIXING RATIO AT 15 GMT. 5.91 7.32 6.73 11.24 14.84 13.91 13.73 12.09 10.60 8.49 6.80 6.23 9.82 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.0 1.0 -4.0 7.5 8.0 12.0 14.5 8.0 8.5 5.0 1.5 -8.0 -8.0 DAY 6 1 10 3 1 4 3 1 6 31 1 28 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.0 18.0 18.0 25.0 34.5 37.0 38.5 36.5 34.5 25.5 16.0 15.0 38.5 DAY 1 7 5 28 24 18 4 6 2 1 17 29 24 HOUR MAXIMUM PRECIPITATION IN MM. 14.0 0.0 4.5 26.0 16.0 0.0 0.0 0.0 0.0 0.0 0.0 5.0 26.0 DAY 18 ** 29 23 11 ** ** ** ** ** ** 3 MONTHLY TOTAL PRECIPITATION IN MM. 33.0 0.0 13.5 51.5 30.0 0.0 0.0 0.0 0.0 0.0 0.0 22.0 150.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 31.0 54.3 0.0 14.7 NO. OF DAYS WITH PRECIPITATION. 4 0 4 4 4 0 0 0 0 0 0 5 21 NO. OF DAYS PRECIPITATION EQUAL 4 0 4 4 4 0 0 0 0 0 0 5 21 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 0 0 3 2 0 0 0 0 0 0 0 6 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 75 71 76 73 73 71 66 68 72 60 69 76 71 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 70 64 72 69 66 50 50 53 45 47 62 72 60 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 75 69 73 77 68 63 62 62 69 63 70 76 69 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 9 0 1 0 0 0 0 0 0 0 0 11 21 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 25 30 31 31 29 0 0 0 146 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 26 0 13 0 0 0 0 0 0 0 0 25 64 DATE OF START AND END FREEZING START = 1 DEC. END = 25 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.0 8.8 12.9 20.3 21.6 27.0 ***** 23.7 23.2 15.8 9.7 5.3 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -2.2 3.4 7.9 11.0 11.7 16.7 ***** 12.7 13.0 8.3 5.6 0.1 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.2 14.3 18.0 29.6 31.5 37.2 38.1 34.6 33.4 23.3 13.8 10.5 24.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.4 10.9 10.1 18.6 19.8 20.5 ***** 21.9 20.4 15.0 8.2 10.4 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.85 5.92 7.94 10.14 9.99 13.22 13.81 12.31 11.58 8.31 6.78 4.36 9.02 MEAN OF MIXING RATIO AT 09 GMT. 6.47 8.59 11.84 15.55 12.99 21.51 23.63 20.72 17.06 13.08 8.03 6.56 13.83 MEAN OF MIXING RATIO AT 15 GMT. 5.90 6.83 8.11 12.95 10.46 16.87 22.03 12.37 12.55 10.91 7.10 5.99 11.01 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.5 0.0 4.5 9.0 1.5 13.5 ***** 10.0 10.0 5.0 3.0 -4.0 ****** DAY 20 5 1 1 2 4 ** 14 1 6 24 20 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.0 18.5 20.5 31.5 35.2 39.0 38.5 36.2 42.0 29.0 19.5 15.0 42.0 DAY 1 28 19 26 11 27 2 14 22 1 1 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 9.0 22.0 20.0 5.0 0.0 0.0 10.3 0.0 0.0 11.5 25.0 18.0 25.0 DAY 11 6 13 22 ** ** 26 ** ** 28 3 31 MONTHLY TOTAL PRECIPITATION IN MM. 22.0 79.0 97.0 8.0 0.0 0.0 10.3 0.0 0.0 11.5 49.0 21.0 297.8 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 66.5 2.7 3.5 27.4 NO. OF DAYS WITH PRECIPITATION. 4 7 10 2 0 0 1 0 0 1 3 3 31 NO. OF DAYS PRECIPITATION EQUAL 4 7 10 2 0 0 1 0 0 1 3 3 31 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 4 5 0 0 0 1 0 0 1 2 1 14 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 76 82 76 60 54 67 67 75 75 73 83 70 72 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 68 72 78 54 38 45 46 48 45 59 68 70 58 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 77 76 71 59 42 52 52 50 58 73 74 75 63 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 13 0 0 0 0 0 *** 0 0 0 0 1 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 *** 0 0 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 21 27 30 31 31 30 0 0 0 170 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 1 0 0 0 1 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 26 3 0 0 0 0 *** 0 0 0 0 22 *** DATE OF START AND END FREEZING START = 9 DEC. END = 21 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 3.7 13.2 18.0 19.5 22.1 26.6 28.7 28.4 26.0 23.0 16.4 12.7 19.9 AVERAGE OF MINIMUM TEMPERATURE IN C. -3.0 8.6 10.9 11.6 13.1 17.0 19.1 19.3 17.4 16.5 9.9 4.8 12.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.3 17.8 25.1 27.5 31.0 36.1 38.4 37.4 34.6 29.5 22.9 20.6 27.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.3 9.2 14.2 15.9 17.9 19.1 19.3 18.1 17.2 13.0 13.0 15.8 15.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.83 8.01 8.54 7.17 9.24 11.41 13.28 10.37 10.42 11.28 6.11 5.29 8.75 MEAN OF MIXING RATIO AT 09 GMT. 6.88 10.49 10.43 9.28 11.66 12.52 19.17 19.91 17.86 20.77 11.92 12.56 13.62 MEAN OF MIXING RATIO AT 15 GMT. 5.93 8.87 8.45 7.45 8.43 10.60 13.43 12.45 12.71 12.56 8.50 9.53 9.91 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -6.0 2.5 8.0 9.0 11.0 16.0 17.0 17.0 16.5 13.5 7.5 1.0 -6.0 DAY 12 1 6 7 7 1 11 1 6 1 14 21 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.0 25.0 30.0 31.0 33.0 37.0 39.5 39.0 36.0 32.0 25.5 23.0 39.5 DAY 31 26 19 19 17 2 9 15 1 4 16 11 24 HOUR MAXIMUM PRECIPITATION IN MM. 31.5 0.0 5.0 12.5 0.0 0.0 0.0 0.0 0.0 0.0 6.0 0.0 31.5 DAY 7 ** 26 2 ** ** ** ** ** ** 1 ** MONTHLY TOTAL PRECIPITATION IN MM. 63.0 0.0 11.0 17.0 0.0 0.0 0.0 0.0 0.0 0.0 12.0 0.0 103.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 71.8 16.5 0.0 11.7 NO. OF DAYS WITH PRECIPITATION. 5 0 3 2 0 0 0 0 0 0 3 0 13 NO. OF DAYS PRECIPITATION EQUAL 5 0 3 2 0 0 0 0 0 0 3 0 13 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 0 0 1 0 0 0 0 0 0 0 0 3 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 83 70 58 54 63 66 66 52 59 69 56 74 64 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 72 66 47 38 37 29 41 45 43 67 58 71 51 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 76 69 48 37 34 35 54 48 59 68 58 69 55 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 16 0 0 0 0 0 0 0 0 0 0 0 16 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 1 0 0 0 0 3 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 1 8 28 30 31 31 30 15 0 0 174 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 27 0 0 0 0 0 0 0 0 0 0 0 27 DATE OF START AND END FREEZING START = 1 JAN. END = 31 JAN. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.8 8.7 14.8 14.5 21.4 25.0 26.1 25.2 22.8 19.1 11.0 9.0 17.0 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.0 2.0 7.3 6.6 11.6 15.2 17.6 15.6 13.3 10.9 4.6 1.2 8.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 14.6 15.4 22.3 22.3 31.2 34.7 34.6 34.7 32.2 27.2 17.4 16.8 25.3 DIFFERENCE BETWEEN AVERAGE MAXIMUM 15.6 13.4 14.9 15.7 19.6 19.5 17.0 19.1 18.9 16.3 12.8 15.6 16.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.08 4.78 6.22 6.25 8.79 9.77 11.94 8.06 6.85 6.62 5.47 4.69 6.96 MEAN OF MIXING RATIO AT 09 GMT. 9.49 9.35 4.79 4.74 7.01 6.11 11.49 7.16 6.49 5.52 6.29 5.90 7.03 MEAN OF MIXING RATIO AT 15 GMT. 7.04 7.22 5.86 5.99 7.13 8.76 12.22 8.83 6.83 5.61 5.62 5.99 7.26 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.0 -2.5 0.0 2.0 7.0 11.5 14.0 12.0 6.5 7.5 -5.0 -2.5 -5.0 DAY 14 5 6 8 7 4 2 22 6 25 27 7 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.5 19.0 25.0 25.5 35.0 37.5 37.0 36.5 34.5 31.0 24.5 21.0 37.5 DAY 23 18 13 30 19 22 28 1 1 3 2 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 64.5 22.0 49.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 25.0 11.0 64.5 DAY 11 26 7 ** ** ** ** ** ** ** 18 4 MONTHLY TOTAL PRECIPITATION IN MM. 74.0 41.0 76.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 74.0 24.0 289.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 66.1 0.0 0.0 33.9 NO. OF DAYS WITH PRECIPITATION. 4 4 4 0 0 0 0 0 0 0 5 3 20 NO. OF DAYS PRECIPITATION EQUAL 3 4 4 0 0 0 0 0 0 0 5 3 19 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 2 3 0 0 0 0 0 0 0 4 1 11 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 80 77 57 48 43 43 55 38 42 50 63 69 55 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 77 74 27 25 22 15 28 17 19 21 48 45 35 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 76 77 48 44 32 35 49 34 30 32 50 59 47 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 2 0 0 0 0 0 0 0 0 0 3 0 5 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 1 2 0 0 0 0 4 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 23 30 31 31 30 5 0 0 150 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 25 7 1 0 0 0 0 0 0 0 5 14 52 DATE OF START AND END FREEZING START = 26 NOV. END = 6 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 8.8 10.1 13.2 16.4 22.1 26.0 26.6 26.3 22.2 19.2 11.4 8.6 17.6 AVERAGE OF MINIMUM TEMPERATURE IN C. 2.5 2.6 5.2 8.4 12.4 16.7 17.7 17.7 12.3 11.3 2.9 0.8 9.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 15.0 17.6 21.2 24.3 31.7 35.3 35.9 35.1 32.1 27.1 20.0 16.5 26.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.5 15.0 16.0 15.9 19.3 18.5 18.2 17.4 19.8 15.8 17.1 15.7 16.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 5.43 4.75 4.80 5.78 7.15 8.79 8.43 8.40 6.81 6.92 4.11 4.25 6.30 MEAN OF MIXING RATIO AT 09 GMT. 5.63 5.63 3.98 5.65 5.53 7.06 7.51 8.04 7.10 6.09 4.89 5.38 6.04 MEAN OF MIXING RATIO AT 15 GMT. 5.39 5.86 4.81 5.74 5.07 7.16 8.20 7.42 6.16 5.82 4.88 4.95 5.95 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.0 -1.0 -2.0 3.0 8.5 13.0 11.0 11.0 6.0 7.5 -6.0 -3.0 -6.0 DAY 7 12 21 5 2 22 6 20 5 25 29 3 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 20.0 23.0 25.0 29.0 35.5 36.5 38.5 37.5 35.0 31.0 23.5 21.0 38.5 DAY 18 28 13 30 24 12 25 3 1 3 1 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 41.0 14.0 26.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.0 41.0 DAY 9 11 10 ** ** ** ** ** ** ** ** 30 MONTHLY TOTAL PRECIPITATION IN MM. 99.0 22.0 74.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 51.0 246.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 79.3 0.0 0.0 20.7 NO. OF DAYS WITH PRECIPITATION. 3 2 4 0 0 0 0 0 0 0 0 4 13 NO. OF DAYS PRECIPITATION EQUAL 3 2 4 0 0 0 0 0 0 0 0 4 13 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 1 3 0 0 0 0 0 0 0 0 3 10 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 77 69 55 44 35 38 37 39 44 52 45 62 50 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 48 42 22 28 19 17 18 20 20 23 29 42 27 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 54 63 41 33 20 22 23 23 26 31 33 50 35 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 1 0 0 0 0 0 0 0 0 0 3 0 4 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 5 4 0 0 0 0 11 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 22 30 27 30 28 5 0 0 142 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 9 3 2 0 0 0 0 0 0 0 6 18 38 DATE OF START AND END FREEZING START = 17 NOV. END = 21 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.2 10.2 12.7 16.1 22.1 26.1 26.7 26.1 22.4 18.8 12.1 8.6 17.3 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.6 3.1 5.3 8.4 12.6 16.9 17.5 17.3 12.6 10.9 3.8 0.5 8.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 14.1 17.4 20.1 23.8 31.6 35.3 35.9 35.0 32.0 26.7 20.3 16.7 25.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 15.7 14.3 14.8 15.4 19.0 18.4 18.4 17.7 19.4 15.8 16.5 16.2 16.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.19 4.65 5.72 6.10 7.16 8.85 8.81 8.13 6.62 6.98 4.88 4.55 6.39 MEAN OF MIXING RATIO AT 09 GMT. 4.84 6.41 6.23 5.75 5.91 7.32 7.57 7.34 7.02 5.31 4.81 5.43 6.16 MEAN OF MIXING RATIO AT 15 GMT. 4.77 6.10 6.00 5.75 5.45 7.21 7.36 7.03 6.14 5.65 4.85 5.41 5.98 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.5 0.0 0.5 0.8 8.5 13.0 11.0 11.0 7.0 7.5 0.0 -3.0 -5.5 DAY 24 25 4 22 2 19 5 20 5 25 26 8 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 20.5 23.0 24.0 28.0 35.0 37.0 38.5 37.5 35.0 31.0 23.0 21.0 38.5 DAY 18 1 6 20 23 13 25 3 1 3 1 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 15.5 44.5 27.0 12.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 21.0 44.5 DAY 24 12 20 15 ** ** ** ** ** ** ** 16 MONTHLY TOTAL PRECIPITATION IN MM. 25.5 94.5 96.0 12.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26.0 254.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 85.0 4.7 0.0 10.2 NO. OF DAYS WITH PRECIPITATION. 3 3 6 1 0 0 0 0 0 0 0 3 16 NO. OF DAYS PRECIPITATION EQUAL 3 3 6 1 0 0 0 0 0 0 0 3 16 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 3 5 1 0 0 0 0 0 0 0 1 11 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 70 65 69 45 35 39 38 40 43 55 55 67 52 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 45 50 45 29 20 18 18 19 20 21 30 42 30 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 51 66 56 33 22 21 20 22 27 33 33 54 37 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 6 0 0 0 0 0 0 0 0 0 0 0 6 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 3 2 0 0 0 0 7 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 23 30 30 30 29 5 0 0 147 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 26 1 0 0 0 0 0 0 0 0 3 19 49 DATE OF START AND END FREEZING START = 26 NOV. END = 25 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.6 10.3 12.7 15.7 20.8 25.6 26.5 26.2 22.0 19.0 11.8 8.4 17.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.3 2.9 5.0 8.2 12.1 16.0 17.3 17.3 12.2 10.8 3.0 0.4 8.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.6 17.7 20.5 23.2 29.5 35.3 35.6 35.1 31.8 27.0 20.6 16.3 25.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.9 14.8 15.5 15.0 17.4 19.3 18.3 17.8 19.6 16.3 17.6 15.9 16.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.58 5.04 5.36 6.54 6.95 7.74 8.16 8.35 6.07 6.82 4.22 4.23 6.17 MEAN OF MIXING RATIO AT 09 GMT. 5.79 5.51 5.60 7.17 6.10 6.79 5.91 7.89 6.65 5.62 4.85 4.52 6.03 MEAN OF MIXING RATIO AT 15 GMT. 5.57 6.09 5.54 6.54 5.65 6.86 7.33 7.34 6.16 5.85 4.98 4.91 6.07 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.0 -1.0 1.5 4.0 8.5 13.0 11.0 11.5 6.0 7.5 -5.0 -5.0 -5.0 DAY 24 25 3 5 11 19 6 18 5 25 27 13 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 20.0 23.0 23.0 26.0 34.5 38.0 38.5 37.5 34.5 30.5 23.5 20.0 38.5 DAY 18 1 11 25 24 30 25 7 11 3 1 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 26.0 17.0 28.0 5.0 12.0 0.0 0.0 0.0 0.0 0.0 0.0 12.0 28.0 DAY 26 24 2 18 1 ** ** ** ** ** ** 31 MONTHLY TOTAL PRECIPITATION IN MM. 69.0 24.0 48.0 9.0 23.0 0.0 0.0 0.0 0.0 0.0 0.0 12.0 185.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 76.2 17.3 0.0 6.5 NO. OF DAYS WITH PRECIPITATION. 4 2 3 2 2 0 0 0 0 0 0 1 14 NO. OF DAYS PRECIPITATION EQUAL 4 2 3 2 2 0 0 0 0 0 0 1 14 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 1 2 0 2 0 0 0 0 0 0 1 9 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 74 73 65 54 38 33 36 39 41 54 46 63 51 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 54 45 36 39 25 17 14 20 20 22 29 35 30 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 59 64 50 40 26 21 21 22 27 33 35 49 37 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 3 0 0 0 0 0 0 0 0 0 2 1 6 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 3 2 0 0 0 0 5 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 18 29 28 30 26 4 0 0 135 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 18 4 0 0 0 0 0 0 0 0 6 19 47 DATE OF START AND END FREEZING START = 17 NOV. END = 27 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1982 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.2 9.9 13.1 15.8 21.4 25.7 26.9 26.6 23.0 18.8 10.6 8.2 17.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.1 2.9 5.4 8.3 11.8 16.3 18.0 17.8 13.6 10.4 2.6 0.3 8.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.7 17.1 20.7 23.3 31.0 35.1 35.9 35.4 32.2 27.2 18.5 16.2 25.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.8 14.2 15.3 15.0 19.2 18.8 17.9 17.6 18.6 16.8 15.9 15.9 16.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.30 4.98 5.83 6.13 6.30 8.28 8.42 8.75 6.95 6.65 4.59 4.31 6.29 MEAN OF MIXING RATIO AT 09 GMT. 5.19 5.50 5.67 5.41 5.63 7.02 7.46 8.05 7.04 6.36 5.22 5.20 6.15 MEAN OF MIXING RATIO AT 15 GMT. 4.98 6.21 5.72 5.60 5.35 6.77 7.50 7.56 6.43 6.21 5.40 5.31 6.09 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.0 0.0 2.0 5.0 8.0 12.5 11.0 11.0 10.5 6.0 -5.0 -3.0 -5.0 DAY 24 10 21 5 1 19 6 20 22 6 29 3 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 20.0 23.0 24.0 26.0 35.5 37.0 38.5 38.5 35.0 31.0 23.5 20.0 38.5 DAY 18 1 13 24 24 14 25 6 1 3 8 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 8.0 18.0 17.0 8.0 0.0 0.0 0.0 0.0 0.0 5.0 12.0 7.0 18.0 DAY 17 9 19 29 ** ** ** ** ** 29 1 6 MONTHLY TOTAL PRECIPITATION IN MM. 25.5 39.5 61.0 19.0 0.0 0.0 0.0 0.0 0.0 5.0 25.0 20.0 195.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 64.6 9.7 0.0 25.6 NO. OF DAYS WITH PRECIPITATION. 4 4 10 3 0 0 0 0 0 1 3 4 29 NO. OF DAYS PRECIPITATION EQUAL 4 4 10 3 0 0 0 0 0 1 3 4 29 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 2 2 0 0 0 0 0 0 0 1 0 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 74 72 68 49 33 37 36 40 44 50 55 64 52 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 48 44 33 28 20 17 17 19 20 25 37 41 29 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 53 68 49 34 22 20 20 23 27 34 42 55 37 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 3 0 0 0 0 0 0 0 0 0 3 0 6 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 5 4 0 0 0 0 9 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 22 29 30 31 27 6 0 0 145 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 23 2 0 0 0 0 0 0 0 0 7 19 51 DATE OF START AND END FREEZING START = 17 NOV. END = 25 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.6 9.5 13.2 16.2 22.0 26.2 29.1 28.0 23.3 18.0 13.9 7.4 17.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.3 3.1 4.9 8.1 12.5 17.1 21.5 19.0 13.6 7.4 4.5 -0.1 9.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.6 15.8 21.4 24.1 31.5 35.3 36.7 37.0 33.0 28.5 23.3 14.9 26.3 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.9 12.7 16.5 16.0 19.0 18.2 15.2 18.0 19.4 21.1 18.8 15.0 17.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.46 4.79 5.31 5.95 6.52 8.47 8.30 8.66 6.51 5.32 4.38 3.96 6.05 MEAN OF MIXING RATIO AT 09 GMT. 4.93 5.64 4.54 5.59 5.91 6.89 7.91 7.10 5.32 6.05 5.90 4.79 5.88 MEAN OF MIXING RATIO AT 15 GMT. 4.82 6.03 4.70 5.76 5.19 6.79 6.94 7.75 7.48 5.25 5.30 4.58 5.88 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.0 0.0 2.0 3.0 8.5 13.0 17.5 13.5 7.0 5.0 3.0 -4.5 -4.5 DAY 12 10 17 5 2 23 1 31 26 24 10 22 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 20.0 23.0 25.0 28.0 35.0 37.5 38.0 38.5 35.5 32.0 27.2 20.5 38.5 DAY 18 1 13 16 23 29 8 6 6 1 1 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 48.0 18.0 23.0 11.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 48.0 DAY 20 11 7 7 ** ** ** ** ** ** ** 27 MONTHLY TOTAL PRECIPITATION IN MM. 69.0 24.0 41.0 31.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 167.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 80.2 18.6 0.0 1.2 NO. OF DAYS WITH PRECIPITATION. 3 2 3 3 0 0 0 0 0 0 0 1 12 NO. OF DAYS PRECIPITATION EQUAL 3 2 3 3 0 0 0 0 0 0 0 1 12 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 1 2 2 0 0 0 0 0 0 0 0 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 73 68 64 47 32 37 36 39 35 42 55 69 50 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 46 50 27 30 21 17 18 16 15 22 27 38 27 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 52 68 41 35 21 20 20 22 35 29 42 58 37 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 1 0 0 0 0 0 0 0 0 0 0 3 4 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 23 9 1 0 0 0 36 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 22 29 31 31 30 14 0 0 157 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 21 2 0 0 0 0 0 0 0 0 0 19 42 DATE OF START AND END FREEZING START = 11 DEC. END = 25 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.0 7.4 12.6 16.2 21.7 25.9 26.7 26.8 22.7 17.5 13.2 8.5 17.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.6 -0.1 4.8 8.3 12.2 16.3 17.5 17.8 12.8 8.7 4.4 0.8 8.5 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.6 14.8 20.4 24.1 31.1 35.5 35.9 35.9 32.6 26.4 22.1 16.2 25.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 15.2 14.9 15.6 15.8 18.9 19.2 18.4 18.1 19.8 17.7 17.7 15.4 17.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.91 4.23 5.03 5.38 6.99 7.92 8.23 8.81 6.89 5.91 4.16 4.91 6.03 MEAN OF MIXING RATIO AT 09 GMT. 4.96 5.53 5.52 5.10 6.43 7.30 7.20 7.78 6.97 5.31 4.45 4.85 5.95 MEAN OF MIXING RATIO AT 15 GMT. 4.69 5.31 5.26 5.04 5.81 6.97 7.36 7.39 5.78 6.00 5.92 4.72 5.85 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.0 -4.5 2.0 4.5 8.5 12.5 11.0 14.0 6.5 2.0 1.0 -2.5 -4.5 DAY 13 1 17 5 1 1 6 16 6 19 28 7 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.0 22.0 25.5 27.0 36.0 38.0 38.5 37.5 35.5 31.5 25.0 19.5 38.5 DAY 24 27 13 23 26 30 25 3 1 1 17 10 24 HOUR MAXIMUM PRECIPITATION IN MM. 12.0 10.0 23.0 0.0 17.0 0.0 0.0 0.0 0.0 0.0 0.0 11.0 23.0 DAY 29 27 20 ** 9 ** ** ** ** ** ** 11 MONTHLY TOTAL PRECIPITATION IN MM. 18.0 10.0 85.0 0.0 30.0 0.0 0.0 0.0 0.0 0.0 0.0 37.0 180.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 62.8 16.7 0.0 20.6 NO. OF DAYS WITH PRECIPITATION. 2 1 10 0 3 0 0 0 0 0 0 6 22 NO. OF DAYS PRECIPITATION EQUAL 2 1 10 0 3 0 0 0 0 0 0 6 22 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 3 0 1 0 0 0 0 0 0 1 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 75 73 64 41 37 35 36 41 44 44 44 75 51 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 43 50 34 25 22 17 17 18 20 21 24 37 27 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 62 64 50 31 24 20 20 21 24 35 45 48 37 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 1 3 0 0 0 0 0 0 0 0 0 0 4 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 4 2 0 0 0 0 8 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 22 29 29 31 29 5 0 0 145 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 28 16 0 0 0 0 0 0 0 0 0 15 59 DATE OF START AND END FREEZING START = 1 DEC. END = 25 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.9 10.1 13.2 16.5 20.5 25.5 31.8 27.7 24.2 19.5 13.5 4.6 17.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.5 2.6 4.8 8.0 10.6 15.3 25.0 22.5 15.8 11.5 7.3 -0.4 10.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 14.2 17.5 21.7 24.9 30.5 35.8 38.5 32.8 32.8 27.6 19.7 9.8 25.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.7 14.9 16.9 16.9 19.9 20.5 13.5 10.3 17.0 16.1 12.4 10.2 15.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.43 4.62 4.76 5.66 6.99 7.84 12.86 11.35 7.70 7.30 7.06 4.97 7.13 MEAN OF MIXING RATIO AT 09 GMT. 4.67 4.74 4.44 5.11 6.66 7.63 13.34 9.46 9.11 10.25 8.00 6.62 7.50 MEAN OF MIXING RATIO AT 15 GMT. 4.67 5.06 4.75 5.00 5.94 8.72 11.62 9.82 9.69 7.47 7.68 5.77 7.18 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -3.5 -0.5 1.0 3.0 8.0 11.5 23.0 20.0 13.0 7.5 5.0 -5.0 -5.0 DAY 11 12 4 5 23 1 3 13 30 25 30 30 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 20.0 21.5 25.0 29.0 35.0 39.5 40.0 38.5 33.5 31.5 22.5 13.5 40.0 DAY 17 28 15 30 30 28 5 3 1 2 1 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 20.0 7.0 0.0 0.0 9.0 0.0 0.5 0.0 0.0 0.0 0.0 40.5 40.5 DAY 3 2 ** ** 14 ** 31 ** ** ** ** 28 MONTHLY TOTAL PRECIPITATION IN MM. 60.0 7.0 0.0 0.0 9.0 0.0 0.5 0.0 0.0 0.0 0.0 94.0 170.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 39.3 5.3 0.3 55.1 NO. OF DAYS WITH PRECIPITATION. 4 1 0 0 1 0 1 0 0 0 0 4 11 NO. OF DAYS PRECIPITATION EQUAL 4 1 0 0 1 0 0 0 0 0 0 3 9 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 0 0 0 0 0 0 0 0 0 0 3 6 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 69 66 55 42 38 34 45 48 48 59 77 82 55 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 43 35 25 24 23 18 28 25 25 39 45 71 33 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 51 54 42 29 27 26 29 31 33 37 66 72 41 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 6 6 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 31 27 0 0 0 0 58 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 21 30 31 30 29 9 0 0 150 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 0 0 0 0 0 2 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 20 3 0 0 0 0 0 0 0 0 0 20 43 DATE OF START AND END FREEZING START = 6 DEC. END = 17 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C.***** ***** ***** 15.3 23.3 ***** 29.1 26.9 22.5 21.3 12.5 6.4 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** 9.8 15.6 ***** 20.9 18.8 12.7 12.9 6.6 1.6 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** 21.0 32.1 36.6 37.4 35.0 32.3 29.6 18.3 11.2 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** 11.2 16.5 ***** 16.5 16.2 19.6 16.7 11.7 9.6 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** ***** 7.99 8.35 8.07 8.26 7.65 5.85 5.83 5.84 4.60 ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** ***** 11.22 9.00 8.43 8.40 8.40 6.64 6.62 6.90 5.96 ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** ***** 6.64 8.37 7.72 7.62 7.91 6.95 6.65 6.39 5.87 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** 6.5 12.5 ***** 17.5 14.0 10.0 9.5 1.5 -3.0 ****** DAY ** ** ** 8 11 ** 1 11 13 26 17 13 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** 25.5 36.5 41.5 39.0 37.5 35.0 33.5 25.0 19.5 ****** DAY ** ** ** 28 27 25 19 1 28 5 3 30 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** ***** 8.0 0.0 0.0 0.0 0.0 0.0 0.0 4.5 145.5 ****** DAY ** ** ** 9 ** ** ** ** ** ** 23 2 MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** ***** 20.0 0.0 0.0 0.0 0.0 0.0 0.0 12.5 415.5 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION ***** 4.5 0.0 95.5 NO. OF DAYS WITH PRECIPITATION. *** *** *** 5 0 0 0 0 0 0 6 7 *** NO. OF DAYS PRECIPITATION EQUAL *** *** *** 5 0 0 0 0 0 0 4 7 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** *** 0 0 0 0 0 0 0 0 6 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** *** 75 44 36 36 37 43 46 68 79 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** *** 60 26 19 18 21 19 22 47 62 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** *** 46 29 21 19 24 27 30 54 76 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** 0 0 *** 0 0 0 0 0 0 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** 0 0 *** 11 3 0 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** 0 0 0 0 0 0 0 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** 0 20 30 31 30 29 17 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** 0 0 6 0 0 0 0 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** 0 0 0 0 0 0 0 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** *** *** 0 0 *** 0 0 0 0 0 12 *** DATE OF START AND END FREEZING START = 9 DEC. END = 26 DEC. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.9 10.6 11.8 17.9 25.2 27.2 28.9 28.6 26.0 18.7 13.6 8.1 18.6 AVERAGE OF MINIMUM TEMPERATURE IN C. 0.2 3.4 5.7 10.3 17.4 18.2 20.7 20.7 17.5 11.3 8.0 1.6 11.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.7 17.8 18.0 25.6 33.0 36.3 37.2 36.6 34.5 26.2 19.1 14.5 26.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.5 14.4 12.3 15.3 15.6 18.1 16.5 15.9 17.0 14.9 11.1 12.9 14.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.76 4.45 5.85 6.47 8.39 7.49 7.69 8.50 7.53 5.86 5.25 3.43 6.22 MEAN OF MIXING RATIO AT 09 GMT. 4.90 5.06 5.57 6.30 7.97 5.81 7.58 8.56 6.52 6.19 6.55 4.40 6.28 MEAN OF MIXING RATIO AT 15 GMT. 5.09 4.69 5.24 5.74 7.02 5.63 7.25 8.14 6.45 6.11 5.60 4.11 5.92 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -3.5 -0.5 1.5 2.5 14.5 16.0 17.0 18.0 12.0 6.0 1.0 -2.5 -3.5 DAY 15 23 15 9 14 2 4 27 28 18 30 3 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 19.5 21.5 22.0 33.5 38.5 39.0 40.5 38.5 38.0 31.0 25.5 19.5 40.5 DAY 26 2 8 26 21 6 24 10 7 6 5 20 24 HOUR MAXIMUM PRECIPITATION IN MM. 0.0 5.0 12.5 2.5 0.0 0.0 0.0 10.0 0.0 4.0 0.0 7.5 12.5 DAY ** 18 30 6 ** ** ** 16 ** 27 ** 29 MONTHLY TOTAL PRECIPITATION IN MM. 0.0 5.5 43.0 2.5 0.0 0.0 0.0 10.0 0.0 5.5 0.0 7.5 74.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 65.5 3.4 13.5 17.6 NO. OF DAYS WITH PRECIPITATION. 0 2 6 1 0 0 0 1 0 2 0 1 13 NO. OF DAYS PRECIPITATION EQUAL 0 1 6 1 0 0 0 1 0 2 0 1 12 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 1 0 0 0 0 1 0 0 0 0 2 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 70 65 76 61 48 36 34 39 43 51 54 53 53 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 44 36 38 27 22 14 17 19 16 26 41 38 28 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 61 43 46 31 23 16 19 22 21 33 44 43 34 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 2 2 17 10 6 0 0 0 37 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 10 31 29 31 31 30 8 0 0 170 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 0 0 0 0 0 2 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 23 3 0 0 0 0 0 0 0 0 0 9 35 DATE OF START AND END FREEZING START = 1 DEC. END = 23 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.7 9.3 14.2 18.3 23.5 27.1 31.0 28.2 25.4 19.9 13.2 9.0 18.7 AVERAGE OF MINIMUM TEMPERATURE IN C. 1.2 3.3 7.5 11.7 14.6 17.5 23.5 19.6 16.8 11.4 5.4 2.7 11.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.1 15.2 21.0 25.0 32.4 36.7 38.5 36.7 34.0 28.4 21.0 15.4 26.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.9 11.9 13.5 13.3 17.8 19.2 15.0 17.1 17.2 17.0 15.6 12.7 14.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.94 4.96 5.99 7.33 7.82 7.67 11.67 8.36 8.11 5.31 4.25 4.27 6.64 MEAN OF MIXING RATIO AT 09 GMT. 4.78 6.07 6.33 7.74 6.75 6.79 10.23 7.46 7.00 5.79 5.14 5.13 6.60 MEAN OF MIXING RATIO AT 15 GMT. 4.43 5.16 5.54 8.11 6.49 7.54 9.97 7.46 8.27 6.56 5.31 5.55 6.70 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.0 -1.0 3.0 5.0 12.0 14.0 16.5 14.5 13.5 8.0 -1.0 -4.5 -5.0 DAY 22 4 11 7 17 25 1 27 2 28 26 30 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.0 18.5 25.0 30.0 35.5 39.5 41.0 40.0 37.5 31.0 26.0 19.0 41.0 DAY 7 22 28 19 31 14 3 8 10 7 6 16 24 HOUR MAXIMUM PRECIPITATION IN MM. 17.0 35.0 14.5 6.5 0.0 0.0 15.0 0.0 0.0 0.0 0.0 59.0 59.0 DAY 18 25 23 25 ** ** 26 ** ** ** ** 27 MONTHLY TOTAL PRECIPITATION IN MM. 46.0 103.5 25.5 21.5 0.0 0.0 27.5 0.0 0.0 0.0 0.0 75.5 299.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 58.4 7.2 9.2 25.2 NO. OF DAYS WITH PRECIPITATION. 6 6 4 5 0 0 2 0 0 0 0 6 29 NO. OF DAYS PRECIPITATION EQUAL 5 6 4 5 0 0 2 0 0 0 0 5 27 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 3 1 0 0 0 2 0 0 0 0 2 10 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 69 73 65 61 42 36 44 40 46 46 55 63 53 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 53 50 37 36 20 16 21 17 18 21 28 41 30 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 60 55 41 46 22 21 27 21 27 36 46 61 39 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 3 0 0 0 0 0 0 0 0 0 0 1 4 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 27 9 4 0 0 0 42 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 2 28 30 31 31 30 3 0 0 155 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 10 2 0 0 0 0 12 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 14 6 0 0 0 0 0 0 0 0 2 8 30 DATE OF START AND END FREEZING START = 24 NOV. END = 9 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.3 6.9 12.2 17.1 23.1 28.3 30.2 28.8 24.6 19.8 13.1 7.9 18.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.8 0.6 6.1 9.7 14.8 19.0 22.4 20.9 15.8 10.6 6.8 2.3 10.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.4 13.2 18.3 24.5 31.4 37.4 38.0 36.8 33.4 29.0 19.5 13.5 25.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.2 12.6 12.2 14.8 16.6 18.4 15.6 15.9 17.6 18.4 12.7 11.2 14.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.34 3.78 4.96 6.85 8.16 7.55 9.01 7.75 6.59 5.61 6.22 4.61 6.20 MEAN OF MIXING RATIO AT 09 GMT. 4.29 4.39 5.33 7.21 7.05 7.32 7.77 8.76 7.73 6.43 7.60 5.64 6.63 MEAN OF MIXING RATIO AT 15 GMT. 4.02 4.12 5.12 6.90 7.16 7.03 7.94 8.64 7.64 5.87 7.33 5.24 6.42 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -6.5 -6.5 -1.0 3.5 7.5 14.0 16.5 17.0 11.5 7.0 1.5 -2.5 -6.5 DAY 19 15 31 1 1 13 25 16 25 31 25 19 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.5 19.5 23.0 30.5 37.5 41.0 41.5 38.0 36.5 32.5 25.0 18.5 41.5 DAY 22 21 27 17 28 27 9 5 9 10 1 4 24 HOUR MAXIMUM PRECIPITATION IN MM. 3.0 1.5 10.0 15.0 0.5 0.0 0.0 0.0 0.0 0.0 21.0 15.0 21.0 DAY 3 1 29 30 1 ** ** ** ** ** 8 5 MONTHLY TOTAL PRECIPITATION IN MM. 4.0 3.0 29.0 35.5 0.5 0.0 0.0 0.0 0.0 0.0 32.5 34.0 138.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 26.0 26.0 0.0 48.0 NO. OF DAYS WITH PRECIPITATION. 2 2 6 6 1 0 0 0 0 0 4 4 25 NO. OF DAYS PRECIPITATION EQUAL 2 2 6 6 0 0 0 0 0 0 4 4 24 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 1 1 0 0 0 0 0 0 1 2 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 69 66 61 62 49 34 36 35 39 47 72 74 54 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 46 41 37 34 22 16 17 20 21 23 48 51 31 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 54 50 45 43 28 19 20 23 26 27 60 62 38 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 10 2 0 0 0 0 0 0 0 0 0 0 12 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 7 23 16 1 0 0 0 47 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 1 20 30 31 31 27 12 0 0 152 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 5 7 0 0 0 0 0 12 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 24 17 1 0 0 0 0 0 0 0 0 10 52 DATE OF START AND END FREEZING START = 9 DEC. END = 31 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.0 8.6 13.4 18.2 25.0 28.4 29.8 29.1 26.0 20.0 13.6 8.5 18.9 AVERAGE OF MINIMUM TEMPERATURE IN C. 0.7 2.5 6.5 11.0 16.9 20.1 22.6 21.3 18.5 12.4 6.5 3.0 11.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.2 14.7 20.3 25.3 33.2 36.7 36.9 36.8 33.6 27.6 20.6 13.9 25.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.5 12.2 13.8 14.3 16.3 16.6 14.3 15.5 15.1 15.2 14.1 10.9 14.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.18 4.63 4.60 5.72 6.06 7.31 8.33 7.62 6.59 6.95 5.24 4.06 5.94 MEAN OF MIXING RATIO AT 09 GMT. 5.26 5.00 4.07 6.05 5.70 6.36 8.06 7.51 6.82 5.77 4.71 4.39 5.81 MEAN OF MIXING RATIO AT 15 GMT. 4.82 4.80 3.48 5.50 5.49 6.24 7.05 6.56 5.73 4.46 3.48 3.49 5.09 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -3.0 -2.0 2.0 5.5 11.5 16.0 20.0 18.5 15.0 8.5 2.5 -5.0 -5.0 DAY 26 12 21 6 14 3 20 18 29 29 30 28 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.5 18.0 27.0 30.0 37.0 40.0 40.0 39.0 36.5 31.5 25.0 19.0 40.0 DAY 25 5 13 15 21 30 1 13 6 2 5 11 24 HOUR MAXIMUM PRECIPITATION IN MM. 9.5 6.5 1.0 11.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 11.5 DAY 9 2 19 4 ** ** ** ** ** ** ** 26 MONTHLY TOTAL PRECIPITATION IN MM. 29.0 21.0 1.5 20.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.5 73.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 70.1 27.9 0.0 2.0 NO. OF DAYS WITH PRECIPITATION. 6 7 2 5 0 0 0 0 0 0 0 2 22 NO. OF DAYS PRECIPITATION EQUAL 6 5 1 5 0 0 0 0 0 0 0 1 18 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 1 0 0 0 0 0 0 0 0 1 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 75 71 53 46 34 34 34 34 35 55 62 62 50 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 57 42 24 28 16 15 19 17 19 22 28 38 27 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 66 50 25 29 18 17 19 18 18 20 25 39 29 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 1 1 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 11 28 22 4 0 0 0 65 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 3 29 30 31 31 30 6 0 0 160 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 1 0 0 0 0 0 2 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 19 8 0 0 0 0 0 0 0 0 0 3 30 DATE OF START AND END FREEZING START = 28 DEC. END = 27 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 7.5 7.7 12.7 18.8 23.2 26.5 29.7 28.3 25.1 19.0 ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. 3.3 3.2 8.4 11.8 17.5 19.4 21.9 20.5 17.3 12.2 ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.7 12.2 17.0 25.7 29.0 33.7 37.4 36.1 32.8 25.9 ***** ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.4 9.0 8.6 13.9 11.5 14.3 15.5 15.6 15.5 13.7 ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.43 4.29 5.65 6.55 6.34 7.02 8.92 7.01 6.24 6.34 ***** ***** ***** MEAN OF MIXING RATIO AT 09 GMT. 5.30 5.09 7.26 8.44 8.37 8.98 10.84 9.22 9.55 6.14 ***** ***** ***** MEAN OF MIXING RATIO AT 15 GMT. 4.94 4.28 5.98 6.49 6.17 6.37 8.40 6.43 7.20 4.88 ***** ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.0 -2.5 2.5 7.0 10.0 17.0 19.0 16.5 11.4 9.0 ***** ***** ****** DAY 7 16 16 13 21 15 3 28 28 30 ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.5 16.0 25.0 31.0 32.5 37.0 40.0 39.0 37.0 28.5 ***** ***** ****** DAY 21 19 24 29 11 13 13 11 1 9 ** ** 24 HOUR MAXIMUM PRECIPITATION IN MM. 33.0 11.5 13.0 9.0 0.0 0.0 0.0 0.0 0.0 0.0 ***** ***** ****** DAY 23 21 7 5 ** ** ** ** ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. 120.0 28.5 51.0 12.5 0.0 0.0 0.0 0.0 0.0 0.0 ***** ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 94.1 5.9 0.0 0.0 NO. OF DAYS WITH PRECIPITATION. 9 4 9 2 0 0 0 0 1 0 *** *** *** NO. OF DAYS PRECIPITATION EQUAL 9 4 9 2 0 0 0 0 0 0 *** *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 4 2 2 0 0 0 0 0 0 0 *** *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 66 65 60 54 36 35 39 33 37 52 *** *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 52 50 51 36 29 24 24 22 27 26 *** *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 61 53 52 37 27 20 22 18 25 24 *** *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 1 0 0 0 0 0 0 0 0 0 *** *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 2 6 25 14 0 0 *** *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 *** *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 7 18 30 30 31 25 0 *** *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 0 0 0 *** *** *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 *** *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 7 7 0 0 0 0 0 0 0 0 *** *** *** DATE OF START AND END FREEZING START = 6 JAN. END = 23 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C.***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION ***** ***** ***** ***** NO. OF DAYS WITH PRECIPITATION. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** *** *** *** *** *** *** *** *** *** *** *** *** DATE OF START AND END FREEZING START = ** **** END = ** **** IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.9 8.8 11.1 16.7 23.1 27.5 28.9 ***** ***** ***** 13.6 10.2 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. 1.7 4.4 5.9 10.6 16.2 19.7 21.2 ***** ***** ***** 7.2 3.5 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.1 13.3 16.4 22.8 30.0 35.3 36.6 ***** ***** ***** 20.0 16.8 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.4 8.8 10.5 12.2 13.8 15.6 15.4 ***** ***** ***** 12.8 13.3 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.83 4.94 5.34 6.71 7.77 5.52 5.85 ***** ***** ***** 5.62 4.41 ***** MEAN OF MIXING RATIO AT 09 GMT. 5.31 5.32 4.91 5.66 4.37 3.19 4.73 ***** ***** ***** 7.96 4.89 ***** MEAN OF MIXING RATIO AT 15 GMT. 5.39 5.54 5.65 6.73 5.24 5.04 5.00 ***** ***** ***** 6.23 4.67 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.5 -2.0 1.5 7.0 10.5 15.0 17.0 ***** ***** ***** 3.0 0.5 ****** DAY 16 8 23 14 1 5 16 ** ** ** 30 13 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.5 18.0 20.5 28.0 35.0 37.5 39.0 ***** ***** ***** 26.0 19.5 ****** DAY 30 28 19 19 27 19 8 ** ** ** 1 22 24 HOUR MAXIMUM PRECIPITATION IN MM. 22.3 44.4 10.3 8.0 0.0 0.0 0.0 ***** ***** ***** 0.0 2.0 ****** DAY 9 4 7 28 ** ** ** ** ** ** ** 25 MONTHLY TOTAL PRECIPITATION IN MM. 66.3 119.8 28.3 8.0 0.0 0.0 0.0 ***** ***** ***** 0.0 2.0 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 95.5 3.6 0.0 0.9 NO. OF DAYS WITH PRECIPITATION. 13 12 11 6 0 0 1 *** *** *** 0 1 *** NO. OF DAYS PRECIPITATION EQUAL 9 8 6 1 0 0 0 *** *** *** 0 1 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 4 1 0 0 0 0 *** *** *** 0 0 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 81 68 67 56 44 25 25 *** *** *** 59 66 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 61 50 37 29 15 8 11 *** *** *** 47 37 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 70 59 51 41 21 14 12 *** *** *** 51 48 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 2 0 0 0 0 0 0 *** *** *** 0 0 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 13 17 *** *** *** 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 *** *** *** 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 14 29 31 *** *** *** 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 *** *** *** 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 *** *** *** 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 12 3 0 0 0 0 0 *** *** *** 0 0 *** DATE OF START AND END FREEZING START = 14 JAN. END = 9 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C.***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION ***** ***** ***** ***** NO. OF DAYS WITH PRECIPITATION. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** *** *** *** *** *** *** *** *** *** *** *** *** DATE OF START AND END FREEZING START = ** **** END = ** **** IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 7.2 8.3 8.8 13.9 20.0 24.8 ***** 27.5 22.8 18.4 12.6 6.4 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. 0.2 2.8 3.6 7.8 11.6 15.1 19.8 18.0 13.1 8.7 4.6 1.2 8.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 14.2 13.8 14.0 20.0 28.5 34.3 ***** 37.0 32.5 28.0 20.7 11.6 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.0 11.0 10.4 12.3 16.9 19.2 ***** 19.0 19.4 19.3 16.1 10.4 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.26 5.00 5.79 8.08 8.56 9.02 11.62 9.00 7.54 7.42 5.75 5.06 7.26 MEAN OF MIXING RATIO AT 09 GMT. 5.08 5.40 6.42 7.25 6.90 7.45 8.16 8.08 8.05 6.81 6.93 6.15 6.89 MEAN OF MIXING RATIO AT 15 GMT. 4.90 5.47 6.63 7.91 8.28 10.01 7.58 10.63 6.82 7.45 7.86 6.36 7.49 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -3.5 -2.5 -0.5 5.0 7.5 11.2 16.0 14.5 10.0 5.0 0.0 -1.0 -3.5 DAY 24 11 6 5 11 28 1 10 22 25 27 9 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 18.0 17.0 26.5 31.0 39.0 ***** 38.5 37.0 32.5 24.0 15.0 ****** DAY 21 22 11 19 24 14 ** 15 1 2 1 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 2.6 89.6 11.0 29.0 1.0 0.0 4.4 0.0 0.0 5.0 0.0 25.0 89.6 DAY 1 6 14 24 26 ** 23 ** ** 23 ** 12 MONTHLY TOTAL PRECIPITATION IN MM. 5.9 133.5 19.5 65.5 2.0 0.0 4.4 0.0 0.0 6.7 0.0 77.1 314.6 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 50.5 21.5 1.4 26.6 NO. OF DAYS WITH PRECIPITATION. 4 6 5 7 3 0 1 0 0 2 0 8 36 NO. OF DAYS PRECIPITATION EQUAL 3 5 3 5 1 0 1 0 0 2 0 7 27 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 3 1 4 0 0 0 0 0 0 0 3 11 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 75 72 76 74 54 41 45 40 45 58 61 79 60 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 46 51 56 44 25 20 18 18 23 25 38 59 35 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 57 56 67 61 39 38 21 30 25 38 56 73 47 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 13 3 0 0 0 0 16 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 *** 0 0 0 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 10 23 *** 31 27 17 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 *** 0 0 0 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 *** 0 0 0 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 18 7 2 0 0 0 0 0 0 0 1 7 35 DATE OF START AND END FREEZING START = 27 NOV. END = 6 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.2 8.9 ***** ***** ***** ***** ***** 26.4 23.2 16.5 10.7 6.7 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. 0.2 3.3 ***** ***** ***** ***** ***** 17.9 14.1 7.3 2.0 -1.5 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.2 14.6 15.4 21.3 27.7 33.3 34.6 34.9 32.2 25.8 19.5 14.9 23.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.0 11.3 ***** ***** ***** ***** ***** 17.0 18.1 18.5 17.5 16.4 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.59 5.16 6.38 7.52 9.81 12.96 11.55 10.20 7.73 6.17 4.32 3.71 7.51 MEAN OF MIXING RATIO AT 09 GMT. 5.01 5.92 7.47 8.95 9.30 9.91 10.02 8.67 6.19 5.55 4.11 4.84 7.16 MEAN OF MIXING RATIO AT 15 GMT. 4.92 5.93 7.04 8.66 9.41 11.24 12.32 13.44 9.31 5.89 5.33 4.51 8.17 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -7.0 1.0 ***** ***** ***** ***** ***** 14.0 10.5 0.0 0.0 -4.0 ****** DAY 16 1 ** ** ** ** ** 7 24 22 12 17 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.5 21.5 19.0 25.0 31.5 36.5 37.5 36.5 34.5 32.0 24.5 17.5 37.5 DAY 31 10 25 3 18 28 31 1 4 1 6 7 24 HOUR MAXIMUM PRECIPITATION IN MM. 4.5 35.5 16.5 7.4 0.0 13.0 0.0 0.0 0.0 0.0 1.4 0.0 35.5 DAY 18 5 7 15 ** 15 ** ** ** ** 28 ** MONTHLY TOTAL PRECIPITATION IN MM. 13.8 64.7 76.6 12.4 0.0 20.7 0.0 0.0 0.0 0.0 1.4 0.0 189.6 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 81.8 17.5 0.0 0.7 NO. OF DAYS WITH PRECIPITATION. 7 8 10 2 0 4 0 0 0 0 1 0 32 NO. OF DAYS PRECIPITATION EQUAL 4 6 10 2 0 4 0 0 0 0 1 0 27 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 2 4 0 0 1 0 0 0 0 0 0 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 79 72 72 62 57 60 47 46 45 49 49 60 58 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 56 50 57 48 33 26 25 21 18 23 25 38 35 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 66 58 70 62 44 46 50 57 42 31 43 63 53 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 2 0 *** *** *** *** *** 0 0 0 0 1 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 *** *** *** *** *** 5 0 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 1 0 0 0 0 0 0 0 0 0 0 0 1 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 2 27 30 29 26 4 0 0 118 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 15 0 *** *** *** *** *** 0 0 1 2 26 *** DATE OF START AND END FREEZING START = 22 OCT. END = 29 JAN. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.6 6.0 8.9 14.1 20.0 26.1 30.0 28.6 23.5 18.1 10.6 6.4 16.5 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.4 -0.8 3.1 6.9 11.7 16.4 20.8 19.3 13.5 9.4 3.8 -0.4 8.5 AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.6 12.8 14.7 21.3 28.3 35.7 39.2 38.0 33.4 26.9 17.5 13.2 24.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.0 13.6 11.6 14.4 16.6 19.3 18.4 18.7 19.9 17.5 13.7 13.6 15.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.86 3.95 5.11 7.16 8.27 9.66 13.55 12.11 9.21 7.42 5.29 4.03 7.47 MEAN OF MIXING RATIO AT 09 GMT. 4.86 4.40 5.26 6.14 5.84 5.38 11.41 13.50 13.25 13.36 8.90 7.06 8.28 MEAN OF MIXING RATIO AT 15 GMT. 4.78 5.03 5.49 7.63 7.23 7.33 10.93 11.16 10.36 10.31 7.82 4.86 7.74 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.5 -5.5 0.0 1.5 7.5 13.5 18.0 12.5 11.0 5.0 -1.0 -2.5 -5.5 DAY 5 8 1 12 11 1 1 31 30 29 26 16 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.5 18.0 19.0 25.5 34.5 38.5 41.5 40.5 36.0 33.0 23.5 17.0 41.5 DAY 15 21 3 28 28 29 21 1 3 2 10 9 24 HOUR MAXIMUM PRECIPITATION IN MM. 20.5 13.2 47.8 7.0 0.0 0.0 8.8 0.0 0.0 5.8 4.0 8.2 47.8 DAY 17 27 25 26 ** ** 24 ** ** 24 24 21 MONTHLY TOTAL PRECIPITATION IN MM. 45.7 18.7 83.9 23.0 0.0 0.0 8.8 0.0 0.0 10.0 10.0 17.2 217.3 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 68.2 10.6 4.0 17.1 NO. OF DAYS WITH PRECIPITATION. 4 3 6 7 0 0 1 0 0 2 4 4 31 NO. OF DAYS PRECIPITATION EQUAL 4 3 6 6 0 0 1 0 0 2 4 4 30 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 1 2 0 0 0 0 0 0 0 0 0 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 68 65 66 67 55 45 56 55 61 64 72 75 62 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 45 42 43 34 21 13 22 28 35 50 59 62 38 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 73 73 63 54 42 29 41 35 46 59 68 69 54 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 3 2 0 0 0 0 0 0 0 0 0 0 5 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 15 4 0 0 0 0 19 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 8 30 31 31 28 8 0 0 136 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 11 5 0 0 0 0 16 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 26 20 1 0 0 0 0 0 0 0 6 23 76 DATE OF START AND END FREEZING START = 25 NOV. END = 1 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.3 7.3 12.1 17.3 22.0 26.5 29.1 27.9 24.1 18.4 12.8 8.9 17.6 AVERAGE OF MINIMUM TEMPERATURE IN C. -2.0 1.2 6.0 9.8 13.4 17.8 20.7 19.2 14.5 8.5 2.8 -0.4 9.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.5 13.3 18.2 24.9 30.7 35.3 37.4 36.7 33.7 28.2 22.8 18.3 25.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.5 12.1 12.2 15.2 17.3 17.5 16.7 17.5 19.2 19.7 20.0 18.7 16.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.10 4.89 7.03 9.68 12.31 11.36 14.15 13.25 11.74 6.16 3.82 3.23 8.48 MEAN OF MIXING RATIO AT 09 GMT. 6.24 7.02 10.38 13.77 19.19 12.73 18.04 12.85 14.63 8.39 5.95 5.12 11.19 MEAN OF MIXING RATIO AT 15 GMT. 4.62 5.46 6.21 9.74 13.91 12.51 14.90 13.95 15.10 8.41 5.40 3.81 9.50 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -7.0 -3.0 0.0 4.5 9.0 12.5 17.5 15.5 10.5 4.5 0.0 -4.5 -7.0 DAY 14 14 3 9 2 2 28 28 20 29 21 8 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.5 20.5 27.0 29.0 35.0 37.5 41.0 39.0 36.5 33.0 25.5 21.5 41.0 DAY 5 10 29 21 28 8 15 21 11 6 1 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 15.0 46.2 20.8 2.0 0.0 0.0 1.5 1.0 0.0 0.0 0.0 0.0 46.2 DAY 6 12 19 23 ** ** 27 24 ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. 36.1 51.2 42.8 2.0 0.0 0.0 2.5 1.0 0.0 0.0 0.0 0.0 135.6 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 95.9 1.5 2.6 0.0 NO. OF DAYS WITH PRECIPITATION. 5 2 5 1 0 0 2 1 0 0 0 0 16 NO. OF DAYS PRECIPITATION EQUAL 5 2 5 1 0 0 2 1 0 0 0 0 16 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 2 0 0 0 0 0 0 0 0 0 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 78 78 79 77 71 49 54 54 63 50 50 56 63 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 66 61 67 58 58 30 37 28 37 29 29 33 44 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 72 68 73 70 64 52 46 43 53 48 51 45 57 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 7 0 0 0 0 0 0 0 0 0 0 1 8 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 15 6 0 0 0 0 23 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 23 29 31 31 30 9 0 0 153 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 7 0 0 0 0 0 7 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 25 9 3 0 0 0 0 0 0 0 3 19 59 DATE OF START AND END FREEZING START = 21 NOV. END = 5 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.6 9.5 9.8 16.4 22.1 27.2 27.8 27.8 24.7 18.7 12.8 6.9 17.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.5 3.3 2.6 7.5 12.0 16.8 18.4 19.2 14.9 9.2 4.0 -1.5 8.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.6 15.7 16.9 25.2 32.2 37.5 37.2 36.5 34.5 28.2 21.7 15.2 26.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.1 12.5 14.3 17.7 20.2 20.7 18.8 17.3 19.6 19.0 17.7 16.7 17.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.70 5.32 4.82 6.56 8.35 11.21 11.63 9.54 8.65 5.41 3.94 3.07 6.85 MEAN OF MIXING RATIO AT 09 GMT. 5.23 6.40 6.12 4.34 7.51 7.12 10.36 5.71 5.68 5.02 6.18 5.09 6.23 MEAN OF MIXING RATIO AT 15 GMT. 4.81 6.19 6.39 6.76 8.11 8.65 11.01 8.24 8.04 6.45 6.14 5.07 7.16 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.5 -2.0 -2.0 4.0 9.0 15.0 15.5 15.0 11.0 6.0 0.0 -5.5 -5.5 DAY 7 2 7 11 5 1 3 28 27 31 20 20 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.5 19.5 25.0 28.0 34.5 39.5 40.5 39.0 37.5 30.5 27.0 18.5 40.5 DAY 1 20 27 29 23 29 5 7 2 12 1 11 24 HOUR MAXIMUM PRECIPITATION IN MM. 25.3 37.0 58.0 0.0 0.0 0.0 0.5 0.0 0.0 0.0 0.0 1.2 58.0 DAY 18 6 2 ** ** ** 10 ** ** ** ** 13 MONTHLY TOTAL PRECIPITATION IN MM. 45.3 110.4 106.5 0.0 0.0 0.0 0.5 0.0 0.0 0.0 0.0 1.2 263.9 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 99.4 0.0 0.2 0.5 NO. OF DAYS WITH PRECIPITATION. 4 11 5 0 0 0 1 0 0 0 0 1 22 NO. OF DAYS PRECIPITATION EQUAL 4 11 5 0 0 0 0 0 0 0 0 1 21 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 3 2 0 0 0 0 0 0 0 0 0 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 68 78 69 59 53 49 51 43 51 48 48 58 56 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 51 49 45 19 21 15 22 13 14 18 33 39 28 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 62 64 65 54 41 34 43 27 32 39 43 49 46 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 3 0 0 0 0 0 0 0 0 0 0 8 11 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 3 11 0 0 0 0 14 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 24 30 30 28 28 5 0 0 145 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 3 0 0 0 0 0 3 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 23 3 6 0 0 0 0 0 0 0 1 24 57 DATE OF START AND END FREEZING START = 20 NOV. END = 11 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.5 8.0 11.8 19.3 24.3 27.5 29.0 26.7 24.7 17.5 10.9 9.8 18.0 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.1 0.7 3.5 10.4 13.9 17.6 20.3 17.5 15.2 8.9 4.7 3.7 9.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.1 15.3 20.2 28.0 34.7 37.4 37.8 35.9 34.1 26.2 17.1 15.9 26.3 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.2 14.6 16.7 17.6 20.8 19.8 17.5 18.4 18.9 17.3 12.4 12.2 16.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.87 3.67 4.33 7.47 8.75 12.09 11.78 11.56 9.71 6.21 5.19 4.89 7.46 MEAN OF MIXING RATIO AT 09 GMT. 5.29 4.68 6.87 5.08 5.78 11.58 12.92 11.48 6.66 5.13 5.35 5.32 7.18 MEAN OF MIXING RATIO AT 15 GMT. 6.17 6.43 8.30 7.49 6.43 11.69 11.84 10.94 10.73 7.51 6.05 5.17 8.23 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.0 -3.0 0.0 6.5 10.5 16.0 17.0 15.0 10.5 6.0 0.0 -3.0 -4.0 DAY 1 12 4 4 13 1 1 5 25 26 27 19 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 19.5 21.0 23.5 32.0 38.5 40.5 42.0 38.0 37.0 32.5 26.0 20.5 42.0 DAY 6 27 29 17 31 30 11 5 11 1 1 5 24 HOUR MAXIMUM PRECIPITATION IN MM. 30.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 8.5 21.5 30.5 DAY 17 ** ** ** ** ** ** ** ** 5 19 11 MONTHLY TOTAL PRECIPITATION IN MM. 115.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 20.5 28.0 166.6 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 69.1 0.0 0.0 30.9 NO. OF DAYS WITH PRECIPITATION. 11 0 0 0 0 0 0 0 0 1 4 4 20 NO. OF DAYS PRECIPITATION EQUAL 10 0 0 0 0 0 0 0 0 1 4 4 19 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 4 0 0 0 0 0 0 0 0 0 0 1 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 71 60 55 57 47 53 45 53 52 53 63 65 56 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 49 36 39 19 14 24 27 26 17 21 38 40 29 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 68 63 57 38 24 32 31 34 37 42 57 53 45 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 2 0 0 0 0 0 0 0 0 0 0 0 2 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 13 0 1 0 0 0 14 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 12 31 30 31 31 29 2 0 0 166 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 8 0 0 0 0 0 9 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 18 16 2 0 0 0 0 0 0 0 1 4 41 DATE OF START AND END FREEZING START = 27 NOV. END = 13 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.1 7.6 11.9 18.5 24.4 27.0 29.0 26.4 24.5 ***** ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -1.5 1.0 4.4 9.2 15.2 17.7 19.0 17.0 14.4 ***** ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.6 14.2 19.3 27.8 33.6 36.3 39.1 35.8 34.7 27.7 20.0 14.7 26.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.1 13.2 14.9 18.6 18.4 18.6 20.1 18.8 20.3 ***** ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.57 4.31 5.34 6.24 9.50 10.34 11.29 11.00 8.42 6.68 4.29 4.56 7.13 MEAN OF MIXING RATIO AT 09 GMT. 3.87 4.40 6.84 7.95 6.43 7.54 10.23 9.56 6.40 10.12 6.26 5.92 7.13 MEAN OF MIXING RATIO AT 15 GMT. 4.40 4.98 6.51 8.53 8.67 8.95 10.87 9.86 8.68 8.89 6.30 6.23 7.74 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -7.0 -4.5 2.5 7.0 11.0 15.0 16.5 14.5 10.5 ***** ***** ***** ****** DAY 30 2 1 10 2 21 18 17 26 ** ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.0 17.5 24.0 32.0 38.5 39.0 42.5 38.0 36.5 34.5 27.0 19.5 42.5 DAY 23 18 30 27 18 30 27 11 2 3 4 10 24 HOUR MAXIMUM PRECIPITATION IN MM. 9.8 15.0 11.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 16.2 16.2 DAY 9 11 15 ** ** ** ** 12 ** ** ** 14 MONTHLY TOTAL PRECIPITATION IN MM. 9.8 20.4 22.4 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 38.6 92.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 57.0 0.0 1.1 41.9 NO. OF DAYS WITH PRECIPITATION. 1 2 3 1 0 0 0 1 0 0 0 6 14 NO. OF DAYS PRECIPITATION EQUAL 1 2 3 0 0 0 0 1 0 0 0 6 13 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 1 0 0 0 0 0 0 0 0 2 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 68 73 71 51 48 46 44 53 50 57 58 69 57 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 38 37 40 29 17 18 20 22 16 36 37 47 30 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 57 58 55 43 33 29 29 32 34 51 48 62 44 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 5 1 0 0 0 0 0 0 0 *** *** *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 5 0 0 *** *** *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 7 25 30 31 31 30 7 0 0 161 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 13 0 0 0 0 0 13 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 26 9 0 0 0 0 0 0 0 *** *** *** *** DATE OF START AND END FREEZING START = 1 JAN. END = 16 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C.***** ***** ***** ***** ***** 26.2 25.2 28.0 24.8 19.2 12.7 8.1 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** 17.5 16.4 19.3 15.0 9.0 3.8 0.6 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.3 16.2 ***** ***** ***** 34.9 34.0 36.7 34.6 29.4 21.5 15.5 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** ***** ***** 17.4 17.6 17.4 19.6 20.4 17.7 14.9 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.76 4.59 ***** ***** ***** 9.13 7.92 8.98 8.82 6.01 4.89 4.20 ***** MEAN OF MIXING RATIO AT 09 GMT. 4.96 6.21 ***** ***** ***** 6.89 6.81 8.80 10.95 5.19 6.76 5.54 ***** MEAN OF MIXING RATIO AT 15 GMT. 5.29 5.98 ***** ***** ***** 7.84 7.06 8.33 10.38 6.45 5.76 4.97 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** 15.0 14.5 17.0 12.5 5.5 -2.5 -5.0 ****** DAY ** ** ** ** ** 14 11 31 20 30 26 31 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.5 19.5 ***** ***** ***** 37.5 39.0 39.5 38.5 32.5 25.0 21.5 ****** DAY 5 20 ** ** ** 15 14 5 4 1 12 11 24 HOUR MAXIMUM PRECIPITATION IN MM. 26.2 27.0 ***** ***** ***** 0.0 0.0 0.0 0.0 0.0 1.0 8.2 ****** DAY 12 15 ** ** ** ** ** ** ** ** 2 21 MONTHLY TOTAL PRECIPITATION IN MM. 38.5 48.9 ***** ***** ***** 0.0 0.0 0.0 0.0 0.0 1.0 11.0 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 87.9 0.0 0.0 12.1 NO. OF DAYS WITH PRECIPITATION. 3 6 *** *** *** 0 0 0 0 0 1 4 *** NO. OF DAYS PRECIPITATION EQUAL 3 6 *** *** *** 0 0 0 0 0 1 3 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 2 *** *** *** 0 0 0 0 0 0 0 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 67 65 *** *** *** 39 32 38 52 54 66 70 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 46 44 *** *** *** 17 18 21 27 17 36 41 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 61 59 *** *** *** 27 22 23 36 33 47 57 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** 0 0 0 0 0 0 2 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** 1 0 8 0 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 *** *** *** 0 0 0 0 0 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 *** *** *** 30 31 31 30 17 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 *** *** *** 0 0 0 0 0 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 *** *** *** 0 0 0 0 0 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** *** *** *** *** 0 0 0 0 0 7 16 *** DATE OF START AND END FREEZING START = 24 NOV. END = 31 DEC. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.2 10.1 12.0 17.9 22.2 29.1 30.8 28.5 25.1 18.9 11.7 8.5 18.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.8 3.9 5.8 10.6 14.1 19.5 21.8 19.3 15.7 9.5 2.8 1.7 10.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.2 16.3 18.2 25.1 30.6 37.5 39.8 37.6 34.6 28.3 20.6 15.2 26.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.0 12.4 12.4 14.5 16.5 18.0 18.0 18.3 18.9 18.8 17.8 13.5 16.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.60 5.16 5.89 7.33 8.96 11.56 14.14 9.87 9.49 6.30 4.66 4.40 7.61 MEAN OF MIXING RATIO AT 09 GMT. 4.64 5.20 6.19 8.61 6.41 8.59 12.02 15.34 6.75 4.35 4.76 5.15 7.33 MEAN OF MIXING RATIO AT 15 GMT. 4.92 5.69 6.44 8.16 8.02 9.57 12.79 8.46 8.09 7.43 6.34 5.11 7.59 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.0 -1.0 -1.5 7.5 12.5 17.0 18.0 17.0 13.0 6.0 -1.5 -2.5 -4.0 DAY 2 2 3 1 1 11 3 16 28 25 26 16 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.5 20.0 22.5 29.5 33.5 40.0 41.5 39.5 37.5 31.0 25.5 19.5 41.5 DAY 14 24 31 30 19 21 6 1 1 1 1 22 24 HOUR MAXIMUM PRECIPITATION IN MM. 15.0 22.0 20.0 16.4 0.0 0.0 0.0 12.0 0.0 0.0 0.0 50.0 50.0 DAY 17 5 14 22 ** ** ** 1 ** ** ** 6 MONTHLY TOTAL PRECIPITATION IN MM. 33.0 39.8 89.8 21.6 0.0 0.0 0.0 12.0 0.0 0.0 0.0 84.0 280.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 58.0 7.7 4.3 30.0 NO. OF DAYS WITH PRECIPITATION. 6 4 7 2 0 0 0 1 0 0 0 3 23 NO. OF DAYS PRECIPITATION EQUAL 6 3 7 2 0 0 0 1 0 0 0 3 22 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 2 3 1 0 0 0 1 0 0 0 2 10 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 66 71 68 59 50 45 53 44 61 59 69 71 60 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 42 38 40 37 20 18 23 32 17 16 26 41 29 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 55 51 57 50 37 31 34 29 28 45 61 57 45 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 1 0 0 0 0 0 0 0 0 0 0 0 1 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 4 23 5 0 0 0 0 32 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 20 30 31 31 30 8 0 0 150 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 19 0 0 0 0 0 21 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 22 2 3 0 0 0 0 0 0 0 7 8 42 DATE OF START AND END FREEZING START = 20 NOV. END = 3 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE PERIOD 1964 TO 2003 PAGE 1 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPE. IN C. 6.0 8.8 12.6 16.8 22.1 26.3 28.5 27.0 23.5 18.5 12.3 7.7 17.5 SD OF MEAN DAILY TEMPERATURE IN C. 1.22 1.66 2.15 1.60 1.51 1.25 1.56 1.63 1.51 1.50 1.47 1.72 1.56 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.4 2.3 5.6 9.1 13.1 16.8 19.8 18.2 14.3 9.8 4.6 0.7 9.5 AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.4 15.3 19.5 24.3 31.1 35.8 37.1 35.8 32.8 27.1 20.0 14.7 25.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.8 13.0 13.9 15.3 18.1 19.0 17.4 17.6 18.5 17.3 15.4 14.1 16.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.21 4.84 5.73 6.79 8.18 9.30 10.34 9.40 7.83 6.54 5.10 4.32 6.88 MEAN OF MIXING RATIO AT 09 GMT. 5.38 5.83 6.41 7.62 8.38 8.99 10.90 10.36 8.80 7.59 6.49 5.71 7.70 MEAN OF MIXING RATIO AT 15 GMT. 5.14 5.63 6.00 7.18 7.57 8.77 10.02 9.14 8.33 7.04 6.21 5.39 7.20 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -9.0 -6.5 -4.0 -0.5 1.5 9.0 11.0 8.0 6.0 0.0 -6.0 -9.0 -9.0 YEAR - DAY 73- 9 89-15 75-10 67- 2 76- 2 67- 3 79- 6 75- 1 74-22 96-22 66-29 64- 5 64- 5 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 22.0 25.0 32.0 35.0 39.0 41.5 42.5 41.0 42.0 34.5 27.2 23.0 42.5 YEAR - DAY 66-27 77-26 69-21 69-25 70-23 86-25 1-27 70-10 76-22 1- 3 83- 1 77-11 1-27 24 HOUR MAXIMUM PRECIPITATION IN MM. 64.5 89.6 58.0 29.0 17.0 13.0 15.0 12.0 0.0 11.5 25.0 145.5 145.5 YEAR - DAY 78-11 95- 6 99- 2 95-24 84- 9 96-15 88-26 3- 1 **-** 76-28 76- 3 86- 2 86- 2 MONTHLY TOTAL PRECIPITATION IN MM. 47.9 40.4 42.9 15.3 2.8 0.6 2.1 1.0 0.0 1.3 8.3 36.1 198.7 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 66.2 9.3 1.5 23.0 NO. OF DAYS WITH PRECIPITATION. 5 4 5 3 1 0 0 0 0 0 1 3 22 NO. OF DAYS PRECIPITATION EQUAL 5 3 5 2 0 0 0 0 0 0 1 3 19 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 1 2 1 0 0 0 0 0 0 0 1 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 73 70 64 55 46 43 43 44 47 52 59 68 55 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 52 48 41 36 27 21 23 24 24 29 39 47 34 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 63 60 51 44 32 29 30 30 34 39 50 59 43 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 4 1 0 0 0 0 0 0 0 0 0 2 7 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 12 6 1 0 0 0 21 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 2 22 30 31 31 27 7 0 0 150 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 3 0 0 0 0 0 3 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 20 7 1 0 0 0 0 0 0 0 3 16 47 DATE OF START AND END FREEZING START = 22 OCT. END = 3 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION LAYHENA-NEYRIZ LATITUDE 29 11 N DATA PROCESSING CENTER LONGITUDE 54 19 E ELEVATION 2100 MET. MEAN AND EXTREMES FOR THE PERIOD 1964 TO 2003 PAGE 2 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE DRY BULB TEMPERATURE. IN C. 6.9 9.3 13.1 18.2 24.3 28.7 30.1 28.7 25.0 19.9 13.7 8.7 18.9 AVERAGE DEW POINT TEMPERATURE. IN C. -0.4 1.0 2.3 4.8 6.4 8.1 10.2 9.1 7.0 4.6 2.2 0.2 4.6 AVERAGE OF MIXING RATIO IN G/KG 4.91 5.43 6.04 7.19 8.04 9.02 10.42 9.63 8.32 7.06 5.93 5.14 7.26 AVERAGE OF VAPOUR PRESSURE HPA 6.17 6.83 7.62 9.09 10.18 11.44 13.20 12.21 10.54 8.93 7.48 6.47 9.18 AVERAGE OF SATURATION DEFICIT IN HPA 4.21 5.39 8.25 12.62 21.43 29.55 31.32 28.87 23.03 15.55 9.04 5.38 16.22 AVERAGE RELATIVE HUMIDITY IN PERCENT 63 59 52 45 35 31 32 33 35 40 49 58 44 AVERAGE OF MAXIMUM RELATIVE HUMIDITY(%) 75 73 66 58 47 44 44 45 48 54 62 71 57 AVERAGE OF MINIMUM RELATIVE HUMIDITY(%) 50 46 39 34 25 20 23 23 23 28 37 45 33 NO. OF DAYS PRECIPITATION EQUAL 3 2 3 1 0 0 0 0 0 0 1 2 12 OR MORE THAN 5 MM.