IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 1 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. AVERAGE OF MEAN DAILY TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MAX-MIN 1961 8.3 8.1 9.6 13.8 20.4 23.1 24.8 24.5 21.1 17.0 14.0 11.6 16.7 1962 8.0 9.5 11.6 13.3 18.6 21.6 26.0 24.7 21.6 17.9 13.1 10.8 18.0 1963 10.5 10.1 9.1 13.9 18.3 22.2 25.0 24.7 22.6 18.8 12.7 7.8 17.3 1964 3.7 6.7 9.2 12.0 18.8 23.8 24.6 23.7 21.3 17.1 13.9 8.3 20.9 1965 6.1 8.1 8.7 12.1 18.6 23.2 24.9 24.8 22.0 16.8 14.0 11.6 18.8 1966 11.3 9.7 11.7 15.7 18.0 23.1 25.8 26.5 21.9 17.5 14.6 11.8 16.8 1967 9.4 6.1 9.0 13.0 19.3 21.3 24.2 25.2 21.2 17.8 14.4 9.7 19.1 1968 8.8 7.3 9.2 12.1 19.9 20.9 23.9 24.6 23.0 18.7 13.6 9.8 17.3 1969 4.0 3.4 6.8 11.3 17.1 22.3 23.0 24.0 20.9 17.0 11.0 10.8 20.6 1970 7.9 9.6 10.8 14.6 19.8 21.7 24.8 25.1 21.1 17.6 14.8 8.9 17.2 1971 7.1 7.4 9.5 13.1 20.0 21.8 26.0 25.1 24.0 17.9 14.5 9.7 18.9 1972 3.2 2.5 6.3 15.4 18.4 24.1 26.8 25.0 23.6 20.0 13.3 6.6 24.3 1973 4.3 8.4 9.1 13.8 18.5 21.4 24.7 25.3 20.5 18.3 12.4 8.0 21.0 1974 5.6 5.4 8.2 12.2 19.3 23.0 23.0 23.7 21.3 18.6 14.8 9.1 18.3 1975 7.3 7.0 9.7 15.3 20.4 24.1 26.3 24.4 22.2 ****** ****** ****** ****** 1976 5.1 6.6 14.1 18.0 21.5 ****** 24.8 27.8 22.5 16.4 12.1 8.4 ****** 1977 ****** 6.4 9.4 14.0 18.3 23.1 24.3 24.0 19.2 15.0 15.3 8.5 ****** 1978 7.4 7.5 9.5 14.0 16.1 19.8 24.2 24.3 22.8 18.7 10.1 10.6 16.9 1979 7.2 8.2 9.6 13.5 17.9 21.2 25.2 24.9 23.1 19.1 14.3 10.8 18.0 1980 5.8 5.4 8.0 13.4 18.0 22.1 26.1 24.6 21.5 16.8 14.3 10.9 20.7 1981 9.4 9.0 10.3 12.4 18.1 22.0 25.3 25.4 22.8 18.7 14.1 11.8 16.4 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** 13.8 20.0 22.3 26.3 24.8 21.4 17.1 15.2 9.8 ****** 1984 7.6 4.5 8.6 13.5 17.3 21.1 25.6 23.9 22.3 17.7 14.0 6.0 21.1 1985 6.1 6.7 6.0 14.0 19.6 23.7 24.3 25.1 23.0 17.1 13.9 9.0 19.1 1986 ****** 7.2 6.9 14.1 18.3 22.9 25.6 25.7 23.6 ****** ****** ****** ****** 1987 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1988 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1989 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1990 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** 23.6 21.9 16.4 12.7 9.0 ****** 1993 6.1 4.4 7.8 12.6 17.4 ****** 23.9 25.8 ****** ****** ****** ****** ****** 1994 6.0 5.5 6.9 ****** 17.4 21.0 24.8 24.6 21.8 18.0 12.8 8.7 ****** 1995 7.6 7.8 9.4 12.6 17.8 22.7 25.2 25.8 22.8 15.8 14.6 5.0 20.8 1996 4.5 6.6 6.7 10.2 19.7 23.2 24.3 23.1 21.1 18.6 13.4 10.5 19.8 1997 7.8 6.8 11.0 13.2 18.3 24.3 25.3 26.5 20.9 18.8 12.6 8.0 19.7 1998 7.3 5.6 7.6 13.9 18.6 24.8 25.9 27.0 22.3 17.2 13.0 10.1 21.4 1999 8.0 9.0 9.4 13.0 16.1 21.5 23.5 26.3 21.0 17.4 10.1 8.4 18.3 2000 6.0 6.1 7.5 14.4 16.4 20.5 24.7 25.4 22.0 15.3 10.8 7.6 19.4 MEAN 6.9 7.0 9.0 13.5 18.6 22.4 24.9 25.0 21.9 17.6 13.4 9.3 18.1 SD 1.96 1.83 1.75 1.43 1.28 1.22 0.94 1.02 1.02 1.13 1.40 1.70 1.39 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 2 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. AVERAGE OF MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 4.7 4.5 5.5 10.1 16.1 18.6 21.5 20.4 18.5 13.4 9.9 7.0 12.5 1962 4.5 6.1 8.5 10.2 15.1 17.7 21.8 20.7 17.8 14.1 9.5 6.6 12.7 1963 6.4 7.1 5.0 11.3 15.1 18.9 21.5 21.1 19.1 15.6 8.4 3.1 12.7 1964 -0.9 3.4 6.7 8.4 15.0 20.0 20.9 20.6 18.3 13.5 9.2 4.4 11.6 1965 3.0 3.6 5.4 8.9 14.4 19.3 21.1 21.2 18.2 13.5 9.3 6.9 12.1 1966 6.8 6.1 8.6 11.4 13.9 19.0 20.9 22.0 18.3 14.0 10.1 7.3 13.2 1967 3.9 2.3 5.3 8.9 14.6 16.5 19.9 20.5 17.8 13.8 10.6 4.8 11.6 1968 3.9 3.4 5.4 8.6 14.9 16.7 19.2 20.7 18.0 15.2 10.3 6.5 11.9 1969 0.8 0.2 4.8 7.9 12.9 16.9 18.7 19.4 16.7 13.7 6.2 7.0 10.4 1970 4.2 5.1 7.3 10.3 14.7 17.2 19.8 21.2 17.3 13.9 10.5 5.1 12.2 1971 3.0 3.0 5.8 9.2 15.3 16.5 20.8 20.0 17.8 12.6 9.3 4.7 11.5 1972 -0.7 -2.2 2.4 9.6 13.7 19.5 22.4 20.0 19.7 15.3 7.9 3.0 10.9 1973 -0.2 3.3 5.1 9.3 13.8 17.4 20.0 21.4 17.1 14.2 7.1 2.8 10.9 1974 1.8 1.6 4.7 7.9 14.7 18.0 19.2 19.9 17.4 11.9 10.2 4.0 10.9 1975 2.2 3.2 4.6 9.4 15.7 18.7 21.0 19.7 18.6 ****** ****** ****** ****** 1976 1.7 2.8 8.9 14.1 17.2 ****** 20.4 21.0 19.3 12.5 7.6 4.1 ****** 1977 ****** 2.5 6.6 10.4 14.5 19.2 20.6 20.3 15.4 11.1 11.7 5.1 ****** 1978 3.5 4.4 5.8 9.6 12.8 16.1 19.4 20.4 18.3 15.0 5.6 6.2 11.4 1979 3.2 4.6 5.6 10.0 13.4 17.3 21.3 19.5 18.6 15.2 10.0 5.5 12.0 1980 1.5 2.2 5.2 9.7 13.9 17.4 21.1 21.1 17.8 12.7 9.7 5.8 11.5 1981 4.0 4.5 6.7 8.7 13.8 17.5 21.0 21.7 18.2 14.0 9.0 6.6 12.1 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** 8.0 15.5 18.5 21.6 21.2 17.7 12.2 10.3 4.9 ****** 1984 2.6 1.3 6.2 9.7 12.7 16.7 20.5 20.5 17.7 12.0 9.6 1.8 10.9 1985 1.4 1.8 2.2 9.3 14.0 18.7 20.8 20.1 18.6 12.9 9.7 4.4 11.2 1986 ****** 2.9 3.1 9.4 14.0 17.9 20.9 20.3 17.9 ****** ****** ****** ****** 1987 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1988 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1989 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1990 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** 19.5 18.1 11.2 8.2 4.7 ****** 1993 1.4 0.1 2.3 6.7 12.3 ****** 19.6 21.5 ****** ****** ****** ****** ****** 1994 1.9 1.3 2.8 ****** 12.1 16.8 20.0 19.3 16.8 13.8 9.4 4.4 ****** 1995 2.6 3.3 4.5 7.4 13.9 17.6 20.3 21.7 17.8 11.1 8.8 0.2 10.8 1996 -0.9 1.6 3.2 6.5 15.0 19.0 20.3 20.1 17.8 14.7 8.5 4.9 10.9 1997 3.6 0.9 5.3 7.3 13.5 19.9 21.6 22.0 16.3 13.3 8.4 2.2 11.2 1998 1.2 -0.1 2.0 6.9 13.0 20.0 21.0 22.5 18.2 10.6 7.1 4.8 10.6 1999 1.8 1.7 4.0 6.4 9.8 14.4 17.1 20.0 15.5 11.2 4.0 0.9 8.9 2000 -0.3 -0.3 1.3 6.8 9.5 13.5 18.2 19.0 16.8 9.5 5.4 1.1 8.4 MEAN 2.4 2.7 5.0 9.0 14.0 17.8 20.4 20.6 17.8 13.1 8.8 4.6 11.4 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 3 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. AVERAGE OF MAXIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 11.9 11.7 13.6 17.4 24.7 27.6 28.2 28.6 23.6 20.5 18.1 16.2 20.2 1962 11.5 13.0 14.7 16.4 22.0 25.5 30.2 28.6 25.4 21.7 16.8 14.9 20.1 1963 14.7 13.2 13.3 16.5 21.6 25.5 28.6 28.2 26.2 22.0 17.0 12.4 19.9 1964 8.3 10.0 11.8 15.5 22.6 27.6 28.2 26.8 24.3 20.8 18.7 12.1 18.9 1965 9.3 12.5 11.9 15.3 22.8 27.1 28.8 28.4 25.9 20.1 18.6 16.4 19.8 1966 15.9 13.3 14.9 20.0 22.1 27.2 30.7 31.0 25.4 21.0 19.0 16.3 21.4 1967 14.8 9.8 12.8 17.1 24.1 26.1 28.4 30.0 24.5 21.8 18.3 14.7 20.2 1968 13.7 11.3 13.0 15.7 25.0 25.0 28.6 28.5 28.0 22.2 17.0 13.1 20.1 1969 7.3 6.6 8.8 14.6 21.4 27.7 27.2 28.6 25.1 20.4 15.7 14.6 18.2 1970 11.5 14.2 14.3 18.9 24.9 26.1 29.7 29.1 24.8 21.4 19.1 12.7 20.6 1971 11.3 11.9 13.1 17.0 24.8 27.1 31.3 30.1 30.2 23.2 19.7 14.6 21.2 1972 7.2 7.1 10.2 21.2 23.1 28.6 31.1 30.0 27.5 24.8 18.6 10.2 20.0 1973 8.8 13.6 13.1 18.3 23.1 25.4 29.5 29.3 24.0 22.3 17.8 13.1 19.8 1974 9.4 9.1 11.8 16.4 24.0 28.0 26.9 27.6 25.1 25.3 19.3 14.2 19.8 1975 12.4 10.7 14.8 21.3 25.2 29.4 31.6 29.0 25.7 ****** ****** ****** ****** 1976 8.5 10.4 19.4 21.9 25.8 ****** 29.1 34.5 25.6 20.4 16.5 12.7 ****** 1977 ****** 10.2 12.3 17.5 22.0 26.9 27.9 27.7 23.0 19.0 19.0 11.8 ****** 1978 11.2 10.6 13.1 18.4 19.4 23.6 29.0 28.2 27.3 22.4 14.6 15.0 19.4 1979 11.3 11.8 13.7 16.9 22.4 25.1 29.1 30.4 27.6 22.9 18.6 16.0 20.5 1980 10.0 8.6 10.9 17.1 22.2 26.8 31.1 28.0 25.1 21.0 18.9 16.0 19.6 1981 14.9 13.4 14.0 16.1 22.3 26.4 29.6 29.0 27.5 23.4 19.2 17.1 21.1 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** 19.6 24.5 26.1 31.0 28.4 25.2 21.9 20.0 14.7 ****** 1984 12.7 7.6 10.9 17.3 21.7 25.5 30.7 27.4 26.9 23.1 18.2 10.2 19.3 1985 10.5 11.1 10.0 18.7 25.1 28.7 27.8 30.1 27.4 21.3 17.9 13.4 20.2 1986 ****** 11.6 10.6 19.0 22.9 27.8 30.3 30.8 29.4 ****** ****** ****** ****** 1987 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1988 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1989 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1990 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** 27.8 26.2 21.6 17.1 13.2 ****** 1993 10.9 8.7 13.4 18.6 22.5 ****** 28.2 30.1 ****** ****** ****** ****** ****** 1994 10.2 9.8 11.0 ****** 22.8 25.2 29.6 29.8 26.8 22.3 16.2 13.0 ****** 1995 12.8 12.3 14.4 17.8 21.6 27.8 30.1 29.9 27.7 20.5 20.3 9.8 20.4 1996 9.9 11.6 10.3 13.8 24.4 27.4 28.3 26.1 24.4 22.5 18.2 16.0 19.4 1997 11.9 12.8 16.6 18.9 23.1 28.7 29.0 31.0 25.5 24.3 16.8 13.8 21.0 1998 13.4 11.2 13.0 20.6 24.2 29.7 30.9 31.5 26.3 23.8 18.8 15.5 21.6 1999 14.1 16.3 14.8 19.6 22.4 28.6 30.0 32.6 26.6 23.5 16.3 15.9 21.7 2000 12.3 12.5 13.6 22.1 23.3 27.6 31.1 31.7 27.1 21.2 16.2 14.1 21.1 MEAN 11.4 11.2 12.9 18.0 23.1 27.0 29.5 29.4 26.1 22.0 17.9 14.0 20.2 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 4 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. DIFFERENCE BETWEEN AVERAGE MAXIMUM AND MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 7.2 7.2 8.1 7.3 8.6 9.0 6.7 8.2 5.1 7.1 8.2 9.2 7.7 1962 7.0 6.9 6.2 6.2 6.9 7.8 8.4 7.9 7.6 7.6 7.3 8.3 7.3 1963 8.3 6.1 8.3 5.2 6.5 6.6 7.1 7.1 7.1 6.4 8.6 9.3 7.2 1964 9.2 6.6 5.1 7.1 7.6 7.6 7.3 6.2 6.0 7.3 9.5 7.7 7.3 1965 6.3 8.9 6.5 6.4 8.4 7.8 7.7 7.2 7.7 6.6 9.3 9.5 7.7 1966 9.1 7.2 6.3 8.6 8.2 8.2 9.8 9.0 7.1 7.0 8.9 9.0 8.2 1967 10.9 7.5 7.5 8.2 9.5 9.6 8.5 9.5 6.7 8.0 7.7 9.9 8.6 1968 9.8 7.9 7.6 7.1 10.1 8.3 9.4 7.8 10.0 7.0 6.7 6.6 8.2 1969 6.5 6.4 4.0 6.7 8.5 10.8 8.5 9.2 8.4 6.7 9.5 7.6 7.7 1970 7.3 9.1 7.0 8.6 10.2 8.9 9.9 7.9 7.5 7.5 8.6 7.6 8.3 1971 8.3 8.9 7.3 7.8 9.5 10.6 10.5 10.1 12.4 10.6 10.4 9.9 9.7 1972 7.9 9.3 7.8 11.6 9.4 9.1 8.7 10.0 7.8 9.5 10.7 7.2 9.1 1973 9.0 10.3 8.0 9.0 9.3 8.0 9.5 7.9 6.9 8.1 10.7 10.3 8.9 1974 7.6 7.5 7.1 8.5 9.3 10.0 7.7 7.7 7.7 13.4 9.1 10.2 8.8 1975 10.2 7.5 10.2 11.9 9.5 10.7 10.6 9.3 7.1 ****** ****** ****** ****** 1976 6.8 7.6 10.5 7.8 8.6 ****** 8.7 13.5 6.3 7.9 8.9 8.6 ****** 1977 ****** 7.7 5.7 7.1 7.5 7.7 7.3 7.4 7.6 7.9 7.3 6.7 ****** 1978 7.7 6.2 7.3 8.8 6.6 7.5 9.6 7.8 9.0 7.4 9.0 8.8 8.0 1979 8.1 7.2 8.1 6.9 9.0 7.8 7.8 10.9 9.0 7.7 8.6 10.5 8.5 1980 8.5 6.4 5.7 7.4 8.3 9.4 10.0 6.9 7.3 8.3 9.2 10.2 8.1 1981 10.9 8.9 7.3 7.4 8.5 8.9 8.6 7.3 9.3 9.4 10.2 10.5 8.9 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** 11.6 9.0 7.6 9.4 7.2 7.5 9.7 9.7 9.8 ****** 1984 10.1 6.3 4.7 7.6 9.0 8.8 10.2 6.9 9.2 11.1 8.6 8.4 8.4 1985 9.1 9.3 7.8 9.4 11.1 10.0 7.0 10.0 8.8 8.4 8.2 9.0 9.0 1986 ****** 8.7 7.5 9.6 8.9 9.9 9.4 10.5 11.5 ****** ****** ****** ****** 1987 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1988 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1989 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1990 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** 8.3 8.1 10.4 8.9 8.5 ****** 1993 9.5 8.6 11.1 11.9 10.2 ****** 8.6 8.6 ****** ****** ****** ****** ****** 1994 8.3 8.5 8.2 ****** 10.7 8.4 9.6 10.5 10.0 8.6 6.8 8.6 ****** 1995 10.2 9.0 9.9 10.3 7.7 10.1 9.8 8.2 9.9 9.4 11.5 9.6 9.6 1996 10.8 10.0 7.1 7.3 9.4 8.4 8.0 6.0 6.6 7.8 9.7 11.1 8.5 1997 8.3 11.9 11.3 11.6 9.6 8.8 7.4 9.0 9.2 11.0 8.4 11.6 9.8 1998 12.2 11.3 11.0 13.7 11.2 9.7 9.9 9.0 8.1 13.2 11.7 10.7 11.0 1999 12.3 14.6 10.8 13.2 12.6 14.2 12.9 12.6 11.1 12.3 12.2 15.0 12.8 2000 12.6 12.8 12.3 15.3 13.8 14.1 12.9 12.7 10.3 11.7 10.8 13.0 12.7 MEAN 9.0 8.5 7.9 9.0 9.2 9.2 9.0 8.8 8.3 8.9 9.2 9.4 8.9 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 5 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 4.91 4.92 5.21 7.27 10.94 12.75 14.73 13.70 12.41 9.30 7.10 5.73 9.08 1962 4.97 5.64 6.69 7.55 10.49 12.60 14.90 14.32 11.76 9.64 7.08 5.72 9.28 1963 5.71 6.10 5.53 8.62 10.58 13.62 15.23 14.83 12.92 11.12 6.47 4.61 9.61 1964 3.19 4.89 6.32 7.03 10.47 13.95 14.33 14.04 12.48 9.00 6.61 4.79 8.93 1965 4.30 4.52 5.64 7.02 10.22 13.53 14.63 15.06 12.64 9.68 7.06 5.52 9.15 1966 5.78 5.78 6.71 8.25 9.88 13.44 14.31 15.51 12.81 9.90 7.50 6.10 9.66 1967 4.64 4.39 5.49 7.03 10.03 11.26 13.34 14.16 12.47 9.53 7.97 5.20 8.79 1968 4.38 4.66 5.52 7.09 10.26 11.87 13.37 14.78 12.10 10.91 7.89 5.98 9.07 1969 4.10 3.82 5.42 6.49 9.14 11.69 12.62 13.56 11.41 9.87 5.89 6.01 8.33 1970 5.19 5.49 5.99 7.62 10.41 12.35 13.65 15.37 12.28 9.73 7.97 5.48 9.29 1971 4.41 4.67 5.67 7.36 11.01 11.60 14.46 14.50 12.04 9.09 7.21 5.43 8.95 1972 3.75 3.23 4.53 7.67 9.72 14.11 16.27 13.38 13.41 11.41 6.77 4.66 9.08 1973 3.63 4.68 5.66 7.22 10.23 12.46 13.99 15.87 12.47 10.40 6.47 4.80 8.99 1974 4.26 4.25 5.51 6.90 10.68 13.16 14.20 14.58 12.40 8.16 7.81 4.72 8.88 1975 4.36 4.81 5.26 7.42 11.48 14.50 16.14 14.64 13.48 ****** ****** ****** ****** 1976 4.22 4.63 7.37 10.41 12.64 ****** 14.30 13.87 12.69 8.48 5.70 4.45 ****** 1977 ****** 4.29 5.73 7.03 10.18 13.25 13.80 14.38 10.71 8.39 8.34 5.09 ****** 1978 4.42 4.82 5.77 7.46 9.35 11.62 14.56 15.18 13.32 10.80 5.56 5.87 9.06 1979 4.67 5.26 5.78 7.88 9.78 12.55 16.02 14.21 13.69 10.93 7.77 5.63 9.51 1980 4.21 4.48 5.50 7.58 10.26 12.76 15.63 15.85 12.85 9.19 7.48 5.66 9.29 1981 4.91 5.16 6.10 7.21 9.83 12.71 15.69 16.31 13.10 9.91 7.09 6.00 9.50 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** 6.94 11.45 13.57 15.84 15.16 12.32 8.61 7.29 5.23 ****** 1984 4.40 3.92 5.69 7.66 9.30 12.11 14.69 14.41 12.02 8.25 7.35 4.23 8.67 1985 4.16 4.27 4.46 7.23 10.44 13.62 14.09 13.87 12.53 8.97 7.23 5.09 8.83 1986 ****** 4.63 4.65 7.22 10.03 12.28 14.57 14.01 11.36 ****** ****** ****** ****** 1987 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1988 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1989 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1990 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** 13.46 12.40 8.61 6.82 5.40 ****** 1993 4.22 3.85 4.56 6.02 9.61 ****** 14.04 14.92 ****** ****** ****** ****** ****** 1994 4.07 4.27 4.86 ****** 8.89 12.62 15.44 16.08 13.81 10.99 8.04 5.73 ****** 1995 5.27 5.25 5.48 6.95 10.39 13.51 15.03 16.42 13.18 8.29 7.40 3.73 9.24 1996 3.20 4.32 4.78 6.56 11.34 14.39 16.85 16.28 13.87 11.47 7.66 6.43 9.76 1997 5.09 4.50 6.50 7.64 11.36 16.13 16.00 17.87 13.83 11.21 8.13 5.49 10.31 1998 4.88 4.00 5.19 7.93 10.97 16.68 16.01 17.07 14.14 9.97 8.30 6.52 10.14 1999 5.17 5.23 6.19 7.72 10.02 12.47 14.51 16.69 13.08 10.51 6.50 5.39 9.46 2000 4.66 4.26 4.97 8.05 10.31 13.01 14.16 15.31 14.20 9.42 7.00 5.03 9.20 MEAN 4.51 4.66 5.59 7.44 10.36 13.11 14.77 14.99 12.74 9.74 7.21 5.35 9.20 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 6 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 5.59 5.54 5.77 8.41 12.82 14.23 15.73 15.55 13.88 10.42 8.89 7.96 10.40 1962 5.71 6.60 7.53 7.97 11.25 13.54 17.22 16.90 13.98 11.20 8.12 6.87 10.57 1963 6.60 6.68 6.39 9.13 11.54 15.00 16.78 15.88 14.63 12.38 7.93 5.86 10.73 1964 3.95 5.63 7.22 7.48 11.47 15.18 15.67 15.24 14.29 10.43 8.32 5.61 10.04 1965 4.97 5.78 6.50 8.28 11.77 14.83 16.53 17.23 14.18 10.98 9.05 6.93 10.59 1966 7.14 6.82 7.24 9.49 10.63 15.09 16.63 18.24 14.98 11.42 9.47 8.16 11.28 1967 6.55 5.05 6.48 7.58 11.78 12.97 14.79 16.49 14.11 11.76 9.53 6.72 10.32 1968 5.79 5.59 6.01 8.11 12.25 13.39 15.93 16.66 15.31 12.99 9.35 7.07 10.70 1969 4.84 4.45 5.81 7.25 10.67 14.75 14.88 16.58 14.14 11.52 7.93 7.29 10.01 1970 6.27 6.67 7.21 9.26 12.58 13.66 15.80 17.16 14.37 11.66 9.99 6.77 10.95 1971 5.67 5.41 6.94 8.71 12.77 13.84 16.54 15.84 17.09 12.39 9.98 7.29 11.04 1972 4.54 4.03 5.39 9.40 11.26 16.23 17.45 16.21 15.47 14.06 9.17 5.67 10.74 1973 4.80 5.93 6.47 8.24 12.36 15.12 16.36 18.15 15.12 13.17 8.70 6.47 10.91 1974 5.27 5.36 6.23 8.78 12.97 16.44 17.28 17.27 15.35 12.91 10.86 7.41 11.34 1975 6.30 5.93 6.69 10.68 14.44 17.32 18.26 17.18 15.90 ****** ****** ****** ****** 1976 5.14 5.75 9.68 12.67 15.59 ****** 17.30 18.18 16.82 11.16 8.22 6.72 ****** 1977 ****** 5.95 7.05 8.87 11.49 16.09 16.27 17.06 13.10 10.67 10.51 6.60 ****** 1978 5.90 6.05 7.48 9.69 10.71 13.88 17.28 17.30 16.99 13.01 7.07 7.37 11.06 1979 5.80 6.20 7.18 9.35 11.69 14.57 18.49 18.85 17.16 13.33 9.56 7.67 11.65 1980 5.24 5.24 6.01 8.88 12.07 15.27 17.97 17.31 14.52 10.66 9.60 7.39 10.85 1981 6.63 6.67 7.23 8.21 10.88 14.83 18.12 18.98 15.71 11.97 9.32 7.98 11.38 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** 8.94 13.13 16.48 18.38 17.25 14.63 11.26 9.27 6.68 ****** 1984 6.09 4.39 6.58 8.95 10.92 13.72 17.26 16.08 15.01 10.25 8.95 5.05 10.27 1985 5.47 5.51 5.53 8.80 12.77 16.17 15.51 16.49 15.62 10.82 9.48 6.72 10.74 1986 ****** 5.82 5.67 8.17 11.02 13.94 16.36 17.27 16.97 ****** ****** ****** ****** 1987 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1988 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1989 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1990 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** 16.34 15.94 12.44 9.55 7.74 ****** 1993 5.88 5.34 7.76 8.87 13.05 ****** 17.44 18.41 ****** ****** ****** ****** ****** 1994 5.81 6.09 7.14 ****** 14.48 17.25 21.74 23.39 19.66 15.22 10.25 8.00 ****** 1995 8.00 7.32 8.81 10.80 13.68 19.19 20.28 19.21 17.86 12.58 13.42 6.36 13.13 1996 6.24 6.14 6.05 8.20 16.39 21.56 22.53 20.01 17.99 15.51 11.98 10.42 13.58 1997 7.30 7.86 10.72 11.76 15.80 20.70 19.62 24.13 18.34 17.44 10.82 8.36 14.40 1998 8.13 6.12 7.51 9.77 12.91 21.06 20.03 22.15 18.86 14.98 11.90 9.59 13.59 1999 8.44 7.27 8.59 11.25 12.99 17.60 17.95 20.58 15.88 13.14 8.64 8.77 12.59 2000 6.71 6.96 7.95 10.80 12.04 19.96 17.58 19.83 16.80 11.46 9.20 7.96 12.27 MEAN 6.03 5.95 7.03 9.15 12.50 15.94 17.46 17.93 15.78 12.37 9.52 7.28 11.41 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 7 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 5.91 5.76 6.19 8.36 12.95 14.91 16.01 16.16 13.90 10.35 9.03 7.61 10.60 1962 5.79 6.60 7.67 8.36 11.65 13.79 17.61 16.97 14.16 11.20 8.16 6.73 10.72 1963 7.04 6.68 6.29 8.85 11.07 14.63 16.92 16.43 14.94 12.37 7.90 5.67 10.73 1964 4.08 5.63 6.82 7.52 11.46 15.39 15.72 15.98 14.56 10.43 8.13 5.83 10.13 1965 5.26 5.62 6.35 7.87 11.25 15.05 16.69 17.17 13.96 10.91 8.67 6.90 10.48 1966 7.02 6.90 7.27 9.15 10.97 14.44 16.73 18.57 14.81 11.33 9.45 7.47 11.18 1967 6.54 5.10 6.18 7.68 11.60 12.97 14.75 16.64 14.03 11.41 9.20 6.51 10.22 1968 5.31 5.60 6.30 7.90 11.88 12.68 16.21 16.73 15.13 12.64 9.27 7.02 10.56 1969 4.67 4.52 5.68 7.21 10.47 14.23 14.69 16.31 14.05 11.33 7.86 7.20 9.85 1970 6.03 6.52 6.93 8.79 12.24 13.50 15.83 16.91 13.97 10.93 9.54 6.58 10.65 1971 5.42 5.57 6.49 8.10 11.84 13.13 16.73 15.96 15.69 11.86 9.52 6.80 10.59 1972 4.47 4.12 5.25 8.70 10.43 15.55 17.61 15.82 15.36 13.62 8.45 5.40 10.40 1973 4.65 5.82 6.22 7.99 11.34 13.67 15.97 17.37 13.85 12.00 8.11 5.98 10.25 1974 4.97 5.08 5.87 7.71 12.10 14.45 15.99 15.91 14.34 10.75 9.41 6.44 10.25 1975 5.55 5.35 6.24 9.02 12.91 16.37 17.78 16.79 15.37 ****** ****** ****** ****** 1976 4.49 5.19 7.95 10.46 13.64 ****** 14.18 16.90 13.55 9.47 6.18 5.06 ****** 1977 ****** 4.89 5.98 7.64 9.93 13.64 14.83 15.96 11.71 9.63 9.48 5.85 ****** 1978 5.34 5.65 6.60 8.28 9.77 12.01 15.44 15.41 15.01 11.43 6.29 6.34 9.80 1979 5.26 5.28 6.11 8.01 10.29 12.73 16.24 16.89 15.97 12.00 8.39 6.57 10.31 1980 4.90 4.94 5.64 8.06 10.78 13.31 16.73 16.05 12.82 9.90 8.69 6.81 9.89 1981 6.20 6.02 6.56 7.63 10.39 13.60 16.76 17.51 15.00 10.94 8.08 7.21 10.49 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** 8.08 12.24 14.20 17.12 15.90 13.31 10.25 8.78 6.11 ****** 1984 5.48 4.39 5.93 8.26 9.36 12.68 16.55 14.92 14.30 10.07 8.26 4.84 9.59 1985 5.02 4.94 5.04 7.97 11.44 14.33 14.58 15.61 14.42 10.00 8.12 5.53 9.75 1986 ****** 5.26 5.12 8.12 10.47 13.41 15.51 16.30 15.63 ****** ****** ****** ****** 1987 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1988 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1989 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1990 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** 15.45 15.14 10.79 8.58 6.20 ****** 1993 4.91 4.90 6.19 8.11 11.23 ****** 16.34 17.40 ****** ****** ****** ****** ****** 1994 5.26 4.55 5.86 ****** 12.47 15.53 18.91 18.84 15.98 12.57 8.80 6.33 ****** 1995 6.20 6.12 6.75 8.54 11.33 17.24 17.13 18.82 15.82 10.80 10.89 3.80 11.12 1996 4.11 5.34 5.45 7.52 13.63 18.43 19.91 18.26 16.11 13.77 10.30 8.89 11.81 1997 6.04 6.16 7.87 9.44 13.75 18.73 18.63 21.38 15.45 14.45 9.22 6.62 12.31 1998 6.76 5.04 6.55 9.31 12.49 19.74 18.76 21.14 17.25 12.34 9.99 8.01 12.28 1999 6.76 6.81 7.26 9.65 10.94 13.98 16.62 19.95 15.41 12.16 7.74 6.59 11.16 2000 5.71 5.77 5.97 10.06 11.52 15.23 17.13 18.26 15.32 10.87 7.98 6.36 10.85 MEAN 5.51 5.51 6.34 8.39 11.51 14.64 16.57 17.08 14.74 11.38 8.67 6.43 10.56 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 8 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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 1961 1.0 25 -2.0 1 0.5 4 4.0 17 12.0 2 14.0 7 18.5 7 17.0 9 14.5 20 8.5 30 4.5 27 1.5 27 -2.0 1962 1.0 25 1.5 14 2.5 13 6.5 14 11.0 1 11.0 11 19.5 7 18.0 11 13.0 28 7.0 12 3.0 16 1.0 11 1.0 1963 1.5 6 1.5 9 -1.5 8 8.0 1 11.5 4 15.0 13 16.5 1 18.5 4 15.5 10 11.5 19 1.5 27 -5.5 26 -5.5 1964 -8.5 30 -2.0 1 2.2 9 3.6 15 7.5 2 17.0 1 18.6 7 18.0 26 14.5 17 9.8 8 2.5 30 -1.5 27 -8.5 1965 -0.5 6 0.0 4 0.0 13 3.0 10 9.8 5 16.0 27 18.8 7 18.5 9 11.8 22 7.5 30 4.5 11 0.5 23 -0.5 1966 2.5 16 2.0 8 2.0 3 5.5 5 9.5 9 16.0 23 16.5 8 19.8 29 15.5 27 9.0 18 5.2 30 3.8 24 2.0 1967 0.0 28 -3.5 4 -0.8 2 0.5 2 11.0 2 9.5 6 16.8 2 17.5 23 12.5 26 8.8 24 2.5 28 -1.0 25 -3.5 1968 -1.0 24 -1.8 8 0.5 24 4.8 1 8.0 1 12.0 8 13.4 13 18.2 15 15.0 8 7.4 28 6.0 24 2.8 24 -1.8 1969 -7.5 7 -4.5 17 0.0 24 3.5 15 8.5 9 11.0 1 15.8 9 15.5 31 12.0 13 6.0 31 1.5 19 2.5 17 -7.5 1970 -1.0 29 1.5 7 3.0 17 6.0 26 9.5 9 12.5 11 16.5 19 17.2 20 12.5 13 8.0 26 7.0 25 1.0 31 -1.0 1971 -0.2 25 -1.0 3 2.5 1 3.0 3 12.0 15 11.5 20 18.0 7 17.0 10 15.0 18 9.5 10 5.0 21 0.5 22 -1.0 1972 -7.5 25 -8.0 2 -1.0 10 4.5 3 10.0 8 17.0 1 20.0 28 15.5 29 15.5 19 10.0 24 5.5 14 -3.0 24 -8.0 1973 -6.0 25 -1.5 7 -0.8 10 6.0 13 9.5 6 13.0 10 16.5 3 18.0 30 9.0 27 7.0 31 2.0 9 -0.8 15 -6.0 1974 -0.8 19 -2.5 2 -1.0 7 2.5 13 9.0 2 13.8 9 16.5 9 17.5 25 13.0 25 8.0 20 5.0 29 0.0 30 -2.5 1975 -1.5 15 0.0 12 0.0 9 3.5 3 12.5 2 16.5 8 19.5 8 15.0 18 15.5 24 ***** ** ***** ** ***** ** ***** 1976 0.0 27 0.0 1 2.0 5 9.0 7 15.0 9 ***** ** 17.0 6 19.1 30 16.0 30 6.1 31 4.1 1 1.0 25 ***** 1977 ***** ** 0.0 4 3.0 15 7.0 17 12.0 1 16.1 1 18.1 31 16.5 30 5.0 24 4.2 19 3.5 25 -1.5 26 ***** 1978 -3.0 16 1.0 14 1.0 8 4.2 16 6.4 4 9.2 3 15.5 8 16.5 28 14.5 27 11.5 7 2.0 26 -1.0 25 -3.0 1979 -2.8 31 -0.5 19 -0.2 2 4.0 29 6.0 1 15.0 12 18.5 6 17.0 16 13.2 28 10.5 28 4.2 28 3.0 12 -2.8 1980 -2.5 27 -3.8 1 -0.8 5 1.5 18 9.0 18 11.6 1 18.5 9 17.4 30 10.8 24 6.5 22 4.0 26 2.0 22 -3.8 1981 0.4 16 0.6 4 0.0 5 0.1 3 9.0 18 10.8 7 18.2 25 19.0 26 11.5 25 10.0 31 5.5 7 2.4 20 0.0 1982 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1983 ***** ** ***** ** ***** ** 2.0 2 9.5 1 14.8 30 16.0 1 16.5 28 12.5 16 8.5 13 4.6 27 0.0 19 ***** 1984 -1.2 1 -3.0 19 0.0 17 4.0 13 4.5 2 14.5 1 17.0 5 18.0 31 14.0 27 6.0 22 5.0 23 -1.8 12 -3.0 1985 -3.5 18 -3.5 24 -4.8 12 4.0 18 8.0 7 12.5 10 18.0 24 16.5 29 15.0 20 7.5 29 4.5 30 -1.5 31 -4.8 1986 ***** ** -1.8 3 -1.5 3 5.5 1 9.5 18 14.0 24 18.5 22 17.0 6 14.0 8 ***** ** ***** ** ***** ** ***** 1987 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1988 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1989 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1990 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1991 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1992 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** 16.0 30 14.0 29 8.0 9 5.0 26 2.0 8 ***** 1993 0.0 4 -6.5 19 1.0 1 1.0 2 9.0 2 ***** ** 16.5 4 20.5 1 ***** ** ***** ** ***** ** ***** ** ***** 1994 -2.0 22 -2.5 21 1.0 27 ***** ** 7.5 16 11.0 29 16.0 6 17.5 1 12.0 4 9.0 24 6.0 22 -5.0 9 ***** 1995 0.5 30 1.0 21 -0.5 3 4.0 1 11.0 3 13.0 9 15.5 5 20.5 15 10.5 22 6.0 27 4.5 14 -3.0 12 -3.0 1996 -4.5 21 -2.5 4 1.0 19 1.5 6 10.5 1 16.5 2 18.0 9 19.0 17 14.0 20 10.5 25 4.5 17 1.5 16 -4.5 1997 1.0 26 -6.5 2 2.5 16 2.5 12 8.5 1 16.5 1 18.5 6 16.5 29 13.5 6 9.5 26 2.0 30 -4.0 15 -6.5 1998 -5.0 9 -5.0 21 -2.5 3 1.0 5 8.5 1 17.5 2 19.0 1 20.0 6 12.5 11 5.5 14 3.0 26 0.5 29 -5.0 1999 -4.0 23 -5.0 1 -2.5 6 0.0 10 5.5 1 10.5 1 12.5 7 17.4 31 10.0 27 5.0 28 -2.0 30 -4.0 4 -5.0 2000 -7.0 18 -4.0 5 -7.0 16 2.0 3 5.0 11 8.5 12 16.5 1 16.0 1 13.0 26 5.0 16 1.5 18 -4.5 17 -7.0 LOW. -8.5 30 -8.0 2 -7.0 16 0.0 10 4.5 2 8.5 12 12.5 7 15.0 18 5.0 24 4.2 19 -2.0 30 -5.5 26 -8.5 YEAR 1964 1972 2000 1999 1984 2000 1999 1975 1977 1977 1999 1963 1964 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 9 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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 1961 19.5 18 19.5 7 26.5 24 25.0 22 30.5 23 32.0 22 31.0 1 33.0 19 27.5 12 30.0 15 22.0 16 22.0 22 33.0 1962 18.0 4 23.0 16 21.5 4 20.5 8 31.5 17 30.5 7 33.0 24 32.0 22 30.0 1 26.5 7 21.5 1 24.0 20 33.0 1963 23.0 15 23.0 20 25.0 25 25.5 29 28.0 27 30.0 19 32.0 21 32.5 24 29.0 21 25.5 12 23.0 15 22.0 23 32.5 1964 13.5 16 13.0 21 20.5 27 27.2 29 26.2 30 31.5 11 31.0 3 30.5 4 27.4 2 25.5 2 25.5 19 18.5 4 31.5 1965 13.4 8 18.6 23 20.0 31 29.5 28 32.5 16 31.5 8 33.0 17 31.6 4 30.5 24 27.2 8 24.6 16 25.5 14 33.0 1966 24.5 7 20.0 26 29.2 28 25.8 17 27.5 30 32.6 5 33.4 28 33.6 2 29.5 10 25.5 6 23.6 1 23.0 17 33.6 1967 26.5 15 19.5 23 21.0 17 25.2 20 29.5 23 31.5 3 31.5 16 32.0 6 30.5 5 30.6 11 22.6 1 22.6 7 32.0 1968 25.0 13 22.5 27 25.6 13 23.0 14 30.5 20 29.0 27 33.4 20 31.0 15 33.8 27 25.5 17 20.2 9 21.5 27 33.8 1969 11.6 1 11.6 6 15.4 31 23.5 17 30.4 23 32.0 24 33.6 14 31.5 20 31.8 7 26.2 7 23.2 7 21.5 18 33.6 1970 16.0 18 21.0 8 26.0 30 27.0 19 31.0 13 30.0 30 33.5 14 32.5 27 29.5 7 27.5 1 24.5 3 20.0 6 33.5 1971 18.4 2 23.5 27 20.0 28 26.0 15 28.0 5 31.5 13 34.2 22 34.0 15 32.5 4 29.5 7 24.5 15 23.5 13 34.2 1972 16.0 13 12.0 27 20.5 26 30.5 28 29.5 2 31.0 20 34.0 12 32.8 16 32.0 3 28.8 6 25.0 27 14.5 3 34.0 1973 13.0 12 23.0 19 25.5 2 27.0 18 27.0 17 30.5 16 34.8 27 32.8 5 28.5 5 27.4 19 26.5 1 20.0 16 34.8 1974 14.5 21 16.5 10 23.5 18 28.5 16 29.0 13 31.5 24 31.5 25 31.5 22 29.0 8 31.0 28 26.5 3 18.0 1 31.5 1975 18.0 10 16.4 16 27.0 23 27.5 28 31.0 31 33.0 28 33.6 27 33.0 5 31.5 7 ***** ** ***** ** ***** ** ***** 1976 14.0 1 17.0 3 30.0 14 30.0 20 31.2 10 ***** ** 35.0 30 38.0 8 31.0 20 27.1 2 24.1 26 22.1 4 ***** 1977 ***** ** 17.1 14 17.1 20 26.0 13 27.1 14 31.1 7 32.0 9 31.5 10 29.0 12 30.0 26 25.5 4 20.5 5 ***** 1978 17.5 2 18.5 16 17.5 26 34.0 6 26.5 14 28.5 17 33.2 12 32.0 13 34.0 9 32.4 23 18.5 1 26.0 16 34.0 1979 25.5 4 21.0 8 22.5 16 24.0 10 27.6 22 30.0 30 32.2 24 33.4 15 33.5 17 27.5 4 30.4 2 19.5 14 33.5 1980 15.8 28 11.4 13 20.0 23 25.5 22 32.5 22 35.5 4 34.0 26 31.5 15 30.0 3 28.0 3 27.8 12 28.0 5 35.5 1981 22.5 17 24.0 9 27.0 21 25.0 20 30.0 14 30.5 27 31.8 28 32.0 3 30.5 2 29.2 15 30.6 4 26.0 18 32.0 1982 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1983 ***** ** ***** ** ***** ** 28.4 18 29.8 26 29.5 18 34.5 18 34.0 15 28.5 8 27.5 11 26.5 22 26.5 29 ***** 1984 16.2 5 10.8 3 14.5 28 23.8 22 33.0 26 30.0 10 35.0 22 30.5 9 29.0 24 28.0 5 22.5 25 16.0 14 35.0 1985 18.0 21 24.0 15 24.5 21 28.5 24 30.0 31 31.0 20 31.0 13 32.5 7 31.0 11 26.0 18 24.0 16 18.5 9 32.5 1986 ***** ** 19.0 20 15.0 27 32.5 15 31.0 3 30.5 2 33.0 8 33.0 22 32.5 3 ***** ** ***** ** ***** ** ***** 1987 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1988 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1989 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1990 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1991 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1992 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** 31.0 24 29.0 3 29.5 24 21.0 10 21.5 15 ***** 1993 23.0 28 12.0 8 20.0 25 28.0 10 27.5 31 ***** ** 32.5 23 33.5 12 ***** ** ***** ** ***** ** ***** ** ***** 1994 17.0 8 17.5 19 19.5 27 ***** ** 28.5 23 29.0 15 31.5 21 32.5 17 29.5 17 27.0 7 20.0 4 17.2 17 ***** 1995 18.5 3 19.5 11 17.0 30 21.5 15 25.0 23 33.5 30 32.5 13 32.0 3 31.5 9 28.0 1 27.5 4 13.0 12 33.5 1996 11.5 22 24.5 9 13.5 6 20.0 30 29.5 17 29.5 6 34.0 17 27.5 10 27.0 3 25.5 5 21.5 10 18.5 30 34.0 1997 16.5 4 17.0 28 18.5 13 24.5 7 28.5 13 31.5 29 32.5 1 34.5 4 33.0 1 29.0 19 22.0 2 18.0 7 34.5 1998 16.5 1 14.5 9 18.0 30 32.5 14 31.0 21 33.5 20 33.0 31 34.0 4 33.0 1 31.5 1 23.5 16 21.0 31 34.0 1999 17.0 31 24.0 20 17.5 16 24.5 13 29.5 2 31.5 15 32.5 31 35.0 23 31.5 2 30.5 16 23.0 16 25.0 29 35.0 2000 21.5 19 19.0 23 20.0 11 29.0 21 31.0 3 32.5 8 34.5 23 35.5 2 32.5 8 25.5 8 20.0 4 17.0 17 35.5 HIG. 26.5 15 24.5 9 30.0 14 34.0 6 33.0 26 35.5 4 35.0 30 38.0 8 34.0 9 32.4 23 30.6 4 28.0 5 38.0 YEAR 1967 1996 1976 1978 1984 1980 1976 1976 1978 1978 1981 1980 1976 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 10 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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 1961 45.0 28 15.7 25 11.5 10 38.8 15 11.2 17 76.8 6 20.2 12 14.2 7 92.0 2 54.5 24 99.0 14 19.5 16 99.0 1962 29.0 5 30.8 9 40.5 11 15.5 21 10.4 19 32.9 17 16.5 12 34.6 4 131.0 17 109.2 22 64.0 13 31.5 10 131.0 1963 22.3 18 21.8 25 29.5 6 10.8 21 11.5 11 17.8 16 11.2 26 14.8 2 36.3 23 122.0 18 95.5 2 53.5 11 122.0 1964 20.0 19 27.5 26 13.3 7 28.5 9 17.2 1 25.5 17 4.0 9 40.8 6 36.3 16 33.5 7 50.0 11 30.7 25 50.0 1965 36.2 24 19.6 13 34.0 13 14.6 20 27.5 4 25.5 28 14.5 22 56.5 8 86.0 19 52.0 4 59.0 10 30.0 29 86.0 1966 21.5 31 30.5 6 19.5 14 19.0 24 23.5 5 26.5 22 6.8 6 107.0 31 204.0 21 134.0 16 38.5 6 4.8 27 204.0 1967 22.8 22 73.4 14 40.2 8 8.8 9 22.0 15 66.5 5 12.3 25 3.2 13 85.0 11 70.5 13 90.0 16 54.0 16 90.0 1968 11.5 30 35.7 22 43.0 3 44.5 4 7.0 23 30.0 20 46.5 12 11.8 3 14.5 13 186.5 27 96.0 21 14.5 6 186.5 1969 54.0 6 31.0 11 29.0 23 13.0 6 29.5 27 21.5 25 44.5 31 6.5 7 87.5 25 88.0 26 33.0 14 15.0 7 88.0 1970 83.0 1 15.5 20 30.0 24 34.8 21 10.0 22 53.6 10 27.5 24 53.5 29 114.0 9 73.0 18 120.0 13 45.0 8 120.0 1971 52.0 14 25.5 13 24.5 15 36.0 2 5.0 3 33.0 19 2.0 16 7.5 23 1.5 30 54.5 1 3.5 10 20.0 16 54.5 1972 48.0 19 50.0 1 36.5 19 17.5 4 18.5 7 24.0 26 14.5 31 65.0 1 66.0 7 165.0 8 39.0 5 70.0 31 165.0 1973 16.0 24 27.0 6 26.0 8 6.5 24 18.0 3 16.0 23 10.0 22 43.5 29 150.0 26 30.5 27 12.0 19 35.0 12 150.0 1974 21.0 31 17.0 1 21.5 4 17.0 11 6.0 1 19.0 28 77.0 5 11.5 2 15.0 21 3.0 4 29.0 16 25.0 23 77.0 1975 34.0 14 30.0 11 45.0 16 15.0 23 8.5 6 21.0 14 0.0 ** 113.0 16 84.0 14 ***** ** ***** ** ***** ** ***** 1976 16.0 10 44.5 16 18.0 22 10.0 25 26.0 7 ***** ** 9.0 5 5.5 12 35.0 23 188.0 30 45.5 10 23.0 31 ***** 1977 ***** ** 13.0 7 9.0 4 16.0 21 19.5 21 31.0 27 31.5 29 65.5 19 135.0 30 76.0 6 85.0 12 57.0 7 ***** 1978 31.0 10 22.0 22 36.0 13 9.5 11 38.0 23 62.0 2 6.0 1 20.0 15 165.0 26 84.0 25 170.0 2 36.0 20 170.0 1979 26.0 23 37.0 18 36.0 27 20.0 21 24.5 24 25.5 4 20.0 31 71.0 1 35.0 20 41.0 8 54.0 4 81.0 16 81.0 1980 26.0 31 15.0 25 50.0 15 16.0 14 24.0 16 3.0 16 15.0 31 24.0 27 30.0 14 125.0 20 19.0 14 19.0 26 125.0 1981 25.0 25 25.0 11 24.0 31 34.0 1 56.0 16 12.0 6 15.0 19 37.0 6 125.0 23 43.0 16 25.0 6 43.0 29 125.0 1982 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1983 ***** ** ***** ** ***** ** 11.0 25 22.0 29 23.0 26 4.0 31 12.0 18 118.0 14 114.0 12 78.0 5 62.0 14 ***** 1984 24.0 28 14.0 4 25.0 26 8.0 23 43.0 1 63.0 15 0.0 ** 59.0 29 8.0 4 30.0 19 82.0 30 11.0 5 82.0 1985 17.0 23 13.0 26 12.0 4 8.0 16 3.0 23 12.0 15 23.0 14 21.0 26 68.0 20 148.0 22 32.0 13 29.0 14 148.0 1986 ***** ** 15.0 1 8.0 14 9.0 17 7.0 15 16.0 20 3.0 18 4.0 5 18.6 30 ***** ** ***** ** ***** ** ***** 1987 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1988 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1989 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1990 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1991 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1992 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** 50.0 29 73.0 26 150.0 6 73.0 3 24.0 18 ***** 1993 25.0 15 23.0 3 30.0 11 10.0 13 11.0 13 ***** ** 33.0 27 20.0 28 ***** ** ***** ** ***** ** ***** ** ***** 1994 43.0 5 21.0 10 10.0 13 ***** ** 17.0 6 64.5 27 0.0 ** 12.0 30 13.5 3 153.0 20 30.0 24 18.5 4 ***** 1995 21.0 18 19.0 8 11.0 14 5.0 18 5.0 27 35.5 24 20.0 6 34.0 14 50.0 21 205.0 18 3.5 27 18.0 14 205.0 1996 23.5 10 58.5 2 13.0 9 22.0 10 4.0 22 22.0 30 68.0 30 34.0 14 53.0 20 53.0 1 3.0 8 69.0 18 69.0 1997 20.0 27 6.5 1 40.0 29 30.0 12 21.0 20 15.0 24 31.0 7 5.0 29 70.0 3 60.0 24 61.0 6 61.5 17 70.0 1998 19.0 9 58.0 14 25.0 17 21.0 1 8.0 20 29.5 25 34.0 8 10.5 21 30.0 25 188.0 8 49.0 10 13.5 2 188.0 1999 20.0 18 14.0 4 24.0 17 27.0 8 40.5 21 9.0 29 160.0 12 49.0 31 20.0 23 87.0 25 26.5 1 22.5 16 160.0 2000 39.5 14 11.5 26 29.0 24 6.0 21 22.5 4 30.0 12 3.5 13 32.5 29 40.0 11 61.5 14 39.5 14 10.0 9 61.5 HIG. 83.0 1 73.4 14 50.0 15 44.5 4 56.0 16 76.8 6 160.0 12 113.0 16 204.0 21 205.0 18 170.0 2 81.0 16 205.0 YEAR 1970 1967 1980 1968 1981 1961 1999 1975 1966 1995 1978 1979 1995 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 11 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. MONTHLY TOTAL PRECIPITATION WITH SEASONAL PERCENT. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL SEASONAL-PERCENT ----------------------- 1961 115.5 60.2 38.5 99.3 43.3 81.3 40.1 43.4 210.6 222.6 228.1 32.8 1215.7 17.6 18.4 24.2 39.8 1962 116.7 63.8 88.5 81.2 49.1 82.7 33.4 121.0 261.1 368.2 176.6 150.9 1593.2 16.9 13.4 26.1 43.7 1963 91.9 72.9 138.8 39.1 47.9 77.7 23.8 80.8 93.4 327.7 255.6 165.7 1415.3 21.5 11.6 14.0 52.9 1964 88.5 54.4 61.0 143.8 22.1 50.5 13.3 118.5 102.4 139.3 124.0 125.0 1042.8 19.6 20.8 22.5 37.2 1965 88.2 36.3 100.2 66.7 49.9 56.3 48.4 82.4 142.9 225.6 127.0 82.3 1106.2 20.3 15.6 24.7 39.3 1966 38.5 97.4 78.8 55.6 59.9 55.7 13.3 184.9 298.0 298.8 73.0 19.7 1273.6 16.9 13.4 39.0 30.7 1967 50.1 197.1 151.5 33.6 38.1 67.9 25.1 11.6 272.7 180.8 145.8 101.9 1276.2 31.2 10.9 24.2 33.6 1968 53.5 100.2 121.3 112.4 27.2 100.9 75.0 27.7 47.5 372.0 184.6 75.9 1298.2 21.2 18.5 11.6 48.7 1969 270.1 123.0 136.1 61.5 75.8 56.5 76.3 15.2 261.7 342.7 111.7 55.7 1586.3 33.4 12.2 22.3 32.2 1970 182.8 45.5 83.3 64.4 25.4 69.7 59.7 90.6 198.4 162.8 179.3 187.0 1348.9 23.1 11.8 25.9 39.2 1971 140.3 97.0 97.0 151.7 14.2 55.5 2.0 16.5 1.5 116.0 7.0 72.0 770.7 43.4 28.7 2.6 25.3 1972 196.2 144.0 123.0 27.0 73.5 74.0 18.0 75.0 78.0 307.0 163.0 280.0 1558.7 29.7 11.2 11.0 48.1 1973 42.0 57.0 136.3 22.0 46.0 57.5 11.5 123.5 277.0 69.5 45.0 131.5 1018.8 23.1 12.3 40.4 24.1 1974 78.0 74.0 78.0 80.0 17.3 39.0 250.2 54.4 80.0 3.0 80.0 63.0 896.9 25.6 15.2 42.9 16.3 1975 48.6 92.7 140.0 38.0 38.5 36.0 0.0 130.0 224.0 ****** ****** ****** ****** 37.6 15.0 47.3 ***** 1976 55.5 99.5 63.0 20.5 58.0 ****** 23.0 7.0 146.0 881.0 157.0 90.5 ****** 13.6 4.9 11.0 70.5 1977 ****** 23.5 34.0 26.0 68.0 51.5 119.5 134.5 248.0 247.0 201.5 136.0 ****** 4.5 11.3 38.9 45.3 1978 55.0 68.0 76.5 18.0 108.5 125.5 10.0 38.0 195.0 217.0 316.0 129.0 1356.5 14.7 18.6 17.9 48.8 1979 114.5 98.0 75.0 75.0 56.0 50.0 53.0 73.0 101.0 83.0 127.0 190.0 1095.5 26.2 16.5 20.7 36.5 1980 111.5 67.0 110.0 50.0 32.5 5.0 15.0 96.0 59.0 251.0 64.0 65.0 926.0 31.2 9.4 18.4 41.0 1981 69.5 70.0 97.5 98.0 100.0 39.0 30.5 83.0 220.0 133.0 65.0 85.0 1090.5 21.7 21.7 30.6 26.0 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1983 ****** ****** ****** 22.0 71.0 88.0 4.0 53.0 167.0 206.0 165.0 246.0 ****** ***** 17.7 21.9 60.4 1984 58.0 69.5 88.0 25.0 78.0 98.0 0.0 195.0 18.0 113.0 187.0 52.0 981.5 22.0 20.5 21.7 35.9 1985 59.0 79.0 64.0 15.0 7.0 21.5 62.0 37.0 142.0 353.0 126.0 117.0 1082.5 18.7 4.0 22.3 55.1 1986 ****** 28.0 51.0 28.0 17.0 30.0 6.0 4.0 37.5 ****** ****** ****** ****** 39.2 37.2 23.6 ***** 1987 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1988 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1989 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1990 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1992 ****** ****** ****** ****** ****** ****** ****** 107.5 138.0 475.0 127.5 58.5 ****** ***** ***** 27.1 72.9 1993 62.5 89.0 68.0 25.5 32.0 ****** 112.0 24.0 ****** ****** ****** ****** ****** 53.1 13.9 32.9 ***** 1994 78.5 121.5 36.0 ****** 46.0 254.0 0.0 27.0 49.5 409.5 139.0 45.5 ****** 19.6 24.9 6.3 49.2 1995 48.5 77.5 27.0 14.0 7.0 82.0 35.0 61.0 90.5 509.2 3.5 88.5 1043.7 14.7 9.9 17.9 57.6 1996 117.0 168.5 38.5 94.5 4.0 51.5 98.0 60.0 131.0 80.0 3.0 76.0 922.0 35.1 16.3 31.3 17.2 1997 99.5 8.5 50.0 34.0 31.5 35.0 114.5 5.0 256.5 70.0 112.0 97.0 913.5 17.3 11.0 41.2 30.5 1998 46.0 153.0 44.5 66.0 25.0 39.0 77.5 35.0 183.5 446.0 169.0 43.0 1327.5 18.3 9.8 22.3 49.6 1999 51.5 21.5 45.5 34.0 118.0 9.0 216.5 90.0 59.5 177.5 139.0 46.5 1008.5 11.8 16.0 36.3 36.0 2000 155.5 20.5 107.0 10.0 75.0 59.0 3.5 61.0 105.5 119.0 104.5 39.5 860.0 32.9 16.7 19.8 30.6 MEAN 92.8 80.6 82.7 54.1 47.4 64.5 50.6 69.6 148.4 255.0 132.5 101.6 1179.8 21.7 14.1 22.8 41.5 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 12 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. NO. OF DAYS WITH PRECIPITATION YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 12 8 8 10 7 2 6 6 17 11 6 3 96 1962 12 7 8 15 11 8 5 9 8 9 11 14 117 1963 11 11 15 15 9 10 6 13 11 18 12 9 140 1964 9 8 11 14 5 10 7 12 14 10 5 11 116 1965 13 6 13 13 10 10 9 6 11 21 7 8 127 1966 7 11 10 10 8 6 4 7 13 16 4 8 104 1967 6 12 15 14 8 3 6 5 16 10 11 8 114 1968 8 11 15 13 8 11 6 10 7 15 13 10 127 1969 15 14 18 15 13 5 9 5 10 17 11 7 139 1970 12 7 12 9 6 7 8 7 8 12 9 11 108 1971 9 10 10 16 7 4 1 6 1 6 3 10 83 1972 16 8 16 4 11 6 3 3 8 8 10 13 106 1973 7 8 16 8 5 9 2 9 11 9 10 12 106 1974 14 12 12 13 5 5 17 12 12 1 7 7 117 1975 8 11 12 7 11 4 0 5 12 *** *** *** *** 1976 7 8 11 5 11 *** 6 2 15 12 9 11 *** 1977 *** 3 8 5 14 5 6 10 8 16 9 13 *** 1978 7 9 8 6 12 7 3 5 6 10 11 8 92 1979 9 8 7 11 7 7 7 2 10 9 8 7 92 1980 11 10 13 6 7 2 1 10 8 14 8 8 98 1981 6 8 11 12 9 7 5 7 6 10 8 9 98 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 6 8 11 2 14 10 9 9 11 *** 1984 9 12 13 9 6 3 0 10 4 6 7 13 92 1985 8 12 9 3 4 5 9 4 5 10 8 10 87 1986 *** 8 12 6 7 3 3 1 7 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 11 10 6 5 7 *** 1993 5 6 5 4 4 *** 8 2 *** *** *** *** *** 1994 4 12 9 *** 5 11 0 6 6 12 10 4 *** 1995 6 8 3 3 2 10 5 7 3 12 1 9 69 1996 8 11 7 11 1 5 2 3 4 5 1 2 60 1997 8 2 4 2 4 7 10 1 12 2 3 6 61 1998 5 8 4 7 5 2 6 7 13 7 10 6 80 1999 5 3 4 3 8 1 3 4 7 6 10 3 57 2000 12 2 9 2 9 4 1 4 5 5 8 6 67 MEAN 9 9 10 9 7 6 5 7 9 10 8 9 98 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 13 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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 1961 11 8 8 9 6 2 6 6 15 11 5 3 90 1962 11 6 7 14 10 6 4 7 8 9 9 12 103 1963 10 11 15 10 8 9 6 11 10 17 10 8 125 1964 9 7 10 14 4 10 6 10 13 9 5 11 108 1965 12 6 12 10 6 8 6 5 11 20 7 8 111 1966 6 9 9 9 6 6 4 6 13 16 4 7 95 1967 6 11 14 12 5 2 5 5 16 10 10 8 104 1968 7 11 14 11 8 11 6 9 7 13 11 9 117 1969 14 13 16 14 9 5 8 5 9 16 11 6 126 1970 12 7 12 9 4 7 6 5 7 12 8 11 100 1971 7 9 10 15 4 3 1 6 1 6 3 8 73 1972 15 8 15 4 11 6 3 3 6 8 10 13 102 1973 7 8 14 7 5 8 2 9 11 9 9 12 101 1974 11 12 10 13 4 5 17 11 12 1 7 7 110 1975 7 11 11 7 11 4 0 5 12 *** *** *** *** 1976 7 8 11 5 11 *** 6 2 15 12 9 11 *** 1977 *** 3 8 5 13 5 6 10 8 16 9 13 *** 1978 7 9 6 5 11 7 3 5 6 10 11 8 88 1979 9 8 7 11 7 7 7 2 10 9 8 7 92 1980 11 10 13 6 7 2 1 10 8 14 8 8 98 1981 6 8 11 12 9 7 5 7 6 10 8 9 98 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 6 8 11 1 14 9 9 9 11 *** 1984 9 12 13 9 6 3 0 10 4 6 7 13 92 1985 8 12 9 3 4 5 9 4 5 10 8 10 87 1986 *** 8 12 6 7 3 3 1 3 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 11 10 6 5 7 *** 1993 5 6 5 4 4 *** 8 2 *** *** *** *** *** 1994 4 12 9 *** 5 11 0 6 6 12 10 4 *** 1995 6 8 3 3 2 10 5 7 3 12 1 9 69 1996 8 11 7 11 1 5 2 3 4 5 1 2 60 1997 8 2 4 2 4 7 10 1 12 2 3 6 61 1998 5 8 4 7 5 2 6 7 13 7 10 6 80 1999 5 3 4 3 8 1 3 4 7 6 10 3 57 2000 12 2 9 2 9 4 1 4 5 5 8 6 67 MEAN 9 8 10 8 7 6 5 6 9 10 8 8 94 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 14 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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 1961 4 3 1 3 2 1 1 3 4 7 4 1 34 1962 3 2 2 2 2 3 1 6 5 5 6 7 44 1963 3 2 5 1 2 2 1 5 2 5 7 4 39 1964 5 2 3 6 1 1 0 3 4 5 3 5 38 1965 2 1 3 1 2 2 2 3 3 7 3 3 32 1966 1 2 3 2 3 3 0 4 6 6 2 0 32 1967 2 6 6 0 1 1 1 0 7 5 2 3 34 1968 3 4 4 4 0 3 2 1 3 5 4 3 36 1969 7 5 5 2 3 2 1 0 7 5 4 3 44 1970 5 1 2 1 1 1 2 2 4 5 4 5 33 1971 3 5 4 6 0 2 0 0 0 4 0 3 27 1972 7 5 3 1 2 4 1 1 1 6 6 8 45 1973 2 2 6 0 3 2 1 4 4 2 1 5 32 1974 3 3 3 2 0 1 7 1 3 0 4 2 29 1975 1 4 6 2 0 1 0 2 6 *** *** *** *** 1976 3 4 3 1 1 *** 0 0 5 9 4 2 *** 1977 *** 1 0 1 2 2 4 3 3 5 4 4 *** 1978 2 3 2 0 3 3 0 2 3 4 7 5 34 1979 5 3 2 3 1 1 2 1 5 2 4 6 35 1980 4 2 2 3 1 0 1 4 2 5 3 2 29 1981 3 3 4 3 1 2 1 2 4 4 2 3 32 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 1 3 4 0 2 2 3 4 6 *** 1984 2 3 4 0 2 3 0 6 0 5 4 1 30 1985 2 2 3 0 0 1 3 1 3 5 5 6 31 1986 *** 1 0 0 0 2 0 0 1 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 4 3 5 4 2 *** 1993 2 5 3 2 2 *** 4 1 *** *** *** *** *** 1994 2 4 1 *** 2 6 0 1 3 8 7 3 *** 1995 1 4 1 0 0 3 1 2 3 10 0 5 30 1996 6 6 2 4 0 2 2 2 4 2 0 1 31 1997 6 0 1 1 1 1 4 0 7 2 3 3 29 1998 2 4 1 3 0 1 2 1 8 4 6 1 33 1999 2 1 2 1 6 0 3 3 2 5 7 2 34 2000 5 1 4 0 2 2 0 2 5 3 3 1 28 MEAN 3 3 3 2 1 2 1 2 4 5 4 3 33 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 15 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 83 86 84 87 89 84 86 84 89 89 85 83 86 1962 89 89 90 90 89 88 84 87 85 88 88 84 88 1963 87 92 91 95 88 90 87 89 88 92 87 87 89 1964 81 93 96 91 87 88 86 88 90 87 80 83 88 1965 86 84 92 91 91 89 87 90 89 93 89 82 89 1966 85 92 91 88 90 89 86 88 91 93 90 87 89 1967 84 90 88 87 91 87 86 87 91 91 91 87 88 1968 81 88 92 95 88 92 89 91 87 94 95 92 90 1969 91 92 97 92 92 89 87 89 89 93 91 88 91 1970 92 89 89 90 88 89 87 91 92 90 92 91 90 1971 86 91 93 92 92 88 85 85 82 90 89 88 88 1972 90 90 92 91 88 88 85 83 86 91 90 88 89 1973 86 89 93 87 92 89 86 91 94 92 89 89 90 1974 90 92 92 93 92 89 93 92 91 82 90 83 90 1975 87 91 88 88 88 85 85 86 91 *** *** *** *** 1976 92 91 87 90 88 *** 86 81 87 85 82 81 *** 1977 *** 88 90 87 91 85 83 89 86 88 88 86 *** 1978 84 89 95 94 92 90 91 91 86 91 87 88 90 1979 87 91 91 94 88 89 90 86 91 92 93 91 90 1980 92 93 93 92 91 86 88 93 92 91 92 91 91 1981 88 91 92 92 89 86 85 91 88 89 90 91 89 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 90 88 88 84 89 90 89 86 87 *** 1984 89 88 92 91 84 84 83 88 87 83 90 89 87 1985 90 88 88 87 86 84 85 83 85 88 89 86 87 1986 *** 89 89 88 89 81 83 82 81 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 84 88 92 91 93 *** 1993 95 90 92 85 90 *** 91 87 *** *** *** *** *** 1994 79 85 92 *** 91 93 91 94 96 95 94 93 *** 1995 94 94 93 93 93 93 90 90 89 91 91 90 92 1996 79 86 91 92 92 96 96 98 97 96 96 94 93 1997 90 87 94 95 94 93 91 93 96 95 95 92 93 1998 92 89 91 91 89 89 85 87 94 94 94 92 91 1999 90 87 93 91 90 78 81 83 88 91 90 92 88 2000 90 92 92 89 88 85 74 79 90 89 91 89 87 MEAN 88 90 91 91 90 88 87 88 89 90 90 88 89 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 16 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 70 69 65 72 69 64 68 67 79 72 71 74 70 1962 73 76 78 72 72 71 66 70 71 74 71 71 72 1963 70 74 74 81 77 77 70 69 71 77 72 70 74 1964 64 78 88 77 69 69 68 72 77 72 67 67 72 1965 72 70 80 83 73 70 70 75 72 79 73 66 74 1966 70 76 75 72 69 70 63 68 80 78 71 75 72 1967 67 73 76 68 66 65 64 65 78 76 75 71 70 1968 64 71 69 77 64 72 68 72 68 81 80 79 72 1969 79 78 86 75 72 67 69 71 74 79 75 74 75 1970 78 74 75 73 69 68 64 71 77 77 76 77 73 1971 72 69 80 79 69 66 60 63 67 73 74 74 71 1972 78 69 76 62 67 69 63 63 70 75 75 77 70 1973 72 67 75 67 73 76 67 75 85 83 72 75 74 1974 78 80 76 79 73 72 82 78 80 67 81 77 77 1975 75 81 72 72 76 71 65 71 81 *** *** *** *** 1976 81 80 74 80 77 *** 73 60 84 77 73 76 *** 1977 *** 78 82 73 71 74 70 75 74 79 79 79 *** 1978 76 80 82 76 80 79 71 74 77 80 72 73 77 1979 74 75 75 81 72 75 75 71 76 79 75 72 75 1980 73 79 78 78 76 73 66 76 76 73 75 70 74 1981 68 74 78 76 70 73 73 78 71 71 72 70 73 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 68 73 81 69 77 77 73 70 68 *** 1984 70 73 86 79 71 70 66 75 72 60 76 71 72 1985 74 72 76 72 68 69 71 66 72 75 82 77 73 1986 *** 75 77 71 69 65 65 65 73 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 78 80 81 80 87 *** 1993 79 84 89 75 85 *** 80 75 *** *** *** *** *** 1994 83 90 92 *** 90 92 90 95 95 95 94 92 *** 1995 95 91 93 93 90 89 79 77 79 88 94 89 88 1996 86 82 84 87 91 97 96 98 97 96 96 96 92 1997 89 91 96 94 95 90 84 90 95 96 96 90 92 1998 91 84 88 72 73 84 74 81 91 85 92 93 84 1999 89 70 87 83 80 75 71 70 77 77 80 81 78 2000 80 81 89 70 71 87 65 71 78 77 84 83 78 MEAN 76 77 80 76 75 75 71 74 78 78 78 77 76 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 17 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 86 83 80 82 83 78 80 80 88 84 88 87 83 1962 85 88 89 86 84 83 81 82 87 86 87 87 85 1963 89 86 87 88 82 85 82 85 85 91 90 90 87 1964 83 89 94 86 81 79 78 83 89 87 81 87 85 1965 88 85 90 89 86 83 82 84 85 91 91 85 87 1966 87 91 88 82 85 81 76 84 91 91 91 90 86 1967 87 88 86 85 83 80 76 79 88 89 89 87 85 1968 78 87 87 87 80 79 83 86 82 92 93 90 85 1969 91 90 92 86 84 77 80 81 86 91 89 90 86 1970 90 86 86 87 82 79 79 83 89 90 92 92 86 1971 85 88 88 89 83 77 79 80 81 88 87 87 84 1972 91 87 88 77 83 82 79 76 85 89 89 87 84 1973 89 85 88 82 84 85 83 87 92 88 88 89 87 1974 87 90 85 86 88 82 91 89 90 85 88 88 87 1975 88 88 86 81 84 80 76 83 90 *** *** *** *** 1976 85 86 79 83 82 *** 80 82 84 82 77 77 *** 1977 *** 84 88 80 79 77 75 80 78 86 87 86 *** 1978 85 88 87 80 86 79 74 77 82 85 83 85 83 1979 87 87 86 86 76 76 78 75 84 87 87 87 83 1980 86 87 86 85 83 74 74 82 80 86 88 87 83 1981 86 87 85 86 79 77 78 84 83 85 83 85 83 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 76 80 79 73 81 82 82 85 87 *** 1984 85 85 87 86 73 75 72 78 81 80 84 84 81 1985 86 84 83 78 72 71 76 73 78 84 84 82 79 1986 *** 84 84 81 77 71 70 72 78 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 84 90 92 92 92 *** 1993 93 90 92 84 86 *** 82 81 *** *** *** *** *** 1994 89 86 91 *** 91 95 94 94 96 96 96 92 *** 1995 94 93 94 92 91 91 79 85 85 89 92 86 89 1996 85 85 88 91 91 96 96 97 97 97 97 96 93 1997 93 95 95 96 95 92 88 94 95 95 95 92 94 1998 91 86 91 84 85 89 83 89 93 92 94 91 89 1999 88 88 89 89 85 74 78 81 89 89 90 90 86 2000 90 90 89 83 82 87 75 78 87 89 91 89 86 MEAN 88 87 88 85 83 81 80 83 86 88 89 88 86 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 18 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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 1961 0 0 0 0 0 0 0 0 0 0 0 0 0 1962 0 0 0 0 0 0 0 0 0 0 0 0 0 1963 0 0 0 0 0 0 0 0 0 0 0 2 2 1964 3 0 0 0 0 0 0 0 0 0 0 0 3 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 2 1 0 0 0 0 0 0 0 0 0 0 3 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 7 10 0 0 0 0 0 0 0 0 0 0 17 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 *** *** *** *** 1976 0 0 0 0 0 *** 0 0 0 0 0 0 *** 1977 *** 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 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 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 2 0 0 0 0 0 0 0 0 0 2 1986 *** 0 0 0 0 0 0 0 0 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 0 0 0 0 0 *** 1993 0 3 0 0 0 *** 0 0 *** *** *** *** *** 1994 0 0 0 *** 0 0 0 0 0 0 0 2 *** 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 5 0 0 0 0 0 0 0 0 0 0 0 5 1997 0 1 0 0 0 0 0 0 0 0 0 2 3 1998 3 1 0 0 0 0 0 0 0 0 0 0 4 1999 1 4 0 0 0 0 0 0 0 0 0 1 6 2000 5 1 2 0 0 0 0 0 0 0 0 3 11 MEAN 1 1 0 0 0 0 0 0 0 0 0 0 2 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 19 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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 1961 0 0 0 0 0 4 22 12 2 0 0 0 40 1962 0 0 0 0 0 1 26 16 3 0 0 0 46 1963 0 0 0 0 0 3 23 20 8 0 0 0 54 1964 0 0 0 0 0 11 19 13 3 0 0 0 46 1965 0 0 0 0 0 4 15 17 4 0 0 0 40 1966 0 0 0 0 0 3 20 27 2 0 0 0 52 1967 0 0 0 0 0 0 7 15 4 0 0 0 26 1968 0 0 0 0 0 1 8 14 4 0 0 0 27 1969 0 0 0 0 0 1 5 5 1 0 0 0 12 1970 0 0 0 0 0 1 9 19 0 0 0 0 29 1971 0 0 0 0 0 0 15 5 0 0 0 0 20 1972 0 0 0 0 0 5 29 16 9 1 0 0 60 1973 0 0 0 0 0 0 11 22 0 0 0 0 33 1974 0 0 0 0 0 2 5 8 1 0 0 0 16 1975 0 0 0 0 0 4 18 12 2 *** *** *** *** 1976 0 0 0 0 0 *** 14 18 8 0 0 0 *** 1977 *** 0 0 0 0 9 17 17 1 1 0 0 *** 1978 0 0 0 0 0 0 6 13 1 0 0 0 20 1979 0 0 0 0 0 0 23 4 8 0 0 0 35 1980 0 0 0 0 0 0 17 21 1 0 0 0 39 1981 0 0 0 0 0 2 16 25 6 0 0 0 49 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 0 0 4 22 21 0 0 0 0 *** 1984 0 0 0 0 0 1 12 11 1 0 0 0 25 1985 0 0 0 0 0 7 17 9 2 0 0 0 35 1986 *** 0 0 0 0 3 13 13 4 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 3 0 0 0 0 *** 1993 0 0 0 0 0 *** 5 21 *** *** *** *** *** 1994 0 0 0 *** 0 1 6 3 0 0 0 0 *** 1995 0 0 0 0 0 0 19 29 11 0 0 0 59 1996 0 0 0 0 0 1 8 4 2 0 0 0 15 1997 0 0 0 0 0 10 27 25 1 0 0 0 63 1998 0 0 0 0 0 9 16 27 3 0 0 0 55 1999 0 0 0 0 0 0 0 6 0 0 0 0 6 2000 0 0 0 0 0 0 2 0 0 0 0 0 2 MEAN 0 0 0 0 0 3 14 14 3 0 0 0 34 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 20 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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 1961 0 0 0 0 0 0 0 0 0 0 0 0 0 1962 0 0 0 0 0 0 0 0 0 0 0 0 0 1963 0 0 0 0 0 0 0 0 0 0 0 0 0 1964 1 0 0 0 0 0 0 0 0 0 0 0 1 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 *** *** *** *** 1976 0 0 0 0 0 *** 0 0 0 0 0 0 *** 1977 *** 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 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 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 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 0 0 0 0 0 *** 1993 0 0 0 0 0 *** 0 0 *** *** *** *** *** 1994 0 0 0 *** 0 0 0 0 0 0 0 0 *** 1995 0 0 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 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 21 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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 1961 0 0 0 0 2 6 8 9 0 1 0 0 26 1962 0 0 0 0 1 2 18 11 2 0 0 0 34 1963 0 0 0 0 0 1 8 8 0 0 0 0 17 1964 0 0 0 0 0 7 6 1 0 0 0 0 14 1965 0 0 0 0 1 2 9 9 1 0 0 0 22 1966 0 0 0 0 0 7 24 26 0 0 0 0 57 1967 0 0 0 0 0 1 8 21 2 1 0 0 33 1968 0 0 0 0 1 0 14 9 6 0 0 0 30 1969 0 0 0 0 1 11 5 10 7 0 0 0 34 1970 0 0 0 0 4 1 20 15 0 0 0 0 40 1971 0 0 0 0 0 5 23 20 18 0 0 0 66 1972 0 0 0 2 0 11 25 20 5 0 0 0 63 1973 0 0 0 0 0 2 14 17 0 0 0 0 33 1974 0 0 0 0 0 9 7 12 0 2 0 0 30 1975 0 0 0 0 2 18 30 13 7 *** *** *** *** 1976 0 0 1 1 1 *** 14 30 2 0 0 0 *** 1977 *** 0 0 0 0 4 8 12 0 1 0 0 *** 1978 0 0 0 2 0 0 15 6 4 1 0 0 28 1979 0 0 0 0 0 1 11 25 9 0 1 0 47 1980 0 0 0 0 2 4 22 8 1 0 0 0 37 1981 0 0 0 0 1 2 14 14 5 0 1 0 37 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 0 0 0 21 11 0 0 0 0 *** 1984 0 0 0 0 1 2 22 4 0 0 0 0 29 1985 0 0 0 0 1 9 4 20 8 0 0 0 42 1986 *** 0 0 1 1 8 21 26 15 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 11 0 0 0 0 *** 1993 0 0 0 0 0 *** 10 16 *** *** *** *** *** 1994 0 0 0 *** 0 0 13 16 0 0 0 0 *** 1995 0 0 0 0 0 6 24 16 14 0 0 0 60 1996 0 0 0 0 0 0 10 0 0 0 0 0 10 1997 0 0 0 0 0 7 11 23 1 0 0 0 42 1998 0 0 0 1 2 15 23 25 2 1 0 0 69 1999 0 0 0 0 0 9 24 28 4 1 0 0 66 2000 0 0 0 0 1 7 21 27 2 0 0 0 58 MEAN 0 0 0 0 1 5 15 15 3 0 0 0 39 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 22 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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 1961 0 0 0 0 0 0 0 0 0 0 0 0 0 1962 0 0 0 0 0 0 0 0 0 0 0 0 0 1963 0 0 0 0 0 0 0 0 0 0 0 0 0 1964 0 0 0 0 0 0 0 0 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 *** *** *** *** 1976 0 0 0 0 0 *** 0 0 0 0 0 0 *** 1977 *** 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 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 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 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 0 0 0 0 0 *** 1993 0 0 0 0 0 *** 0 0 *** *** *** *** *** 1994 0 0 0 *** 0 0 0 0 0 0 0 0 *** 1995 0 0 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 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 23 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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 1961 0 0 0 0 0 0 0 0 0 0 0 0 0 1962 0 0 0 0 0 0 0 0 0 0 0 0 0 1963 0 0 0 0 0 0 0 0 0 0 0 0 0 1964 0 0 0 0 0 0 0 0 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 *** *** *** *** 1976 0 0 0 0 0 *** 0 0 0 0 0 0 *** 1977 *** 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 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 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 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 0 0 0 0 0 *** 1993 0 0 0 0 0 *** 0 0 *** *** *** *** *** 1994 0 0 0 *** 0 0 0 0 0 0 0 0 *** 1995 0 0 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 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 24 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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 -------------- 1961 0 2 0 0 0 0 0 0 0 0 0 0 2 2 1 2 2 1962 0 0 0 0 0 0 0 0 0 0 0 0 0 ** ** ** ** 1963 0 0 2 0 0 0 0 0 0 0 0 7 9 12 12 3 8 1964 24 1 0 0 0 0 0 0 0 0 0 4 29 12 26 2 1 1965 2 1 1 0 0 0 0 0 0 0 0 0 4 1 6 3 13 1966 0 0 0 0 0 0 0 0 0 0 0 0 0 ** ** ** ** 1967 1 4 2 0 0 0 0 0 0 0 0 2 9 12 25 3 2 1968 4 7 0 0 0 0 0 0 0 0 0 0 11 1 23 2 25 1969 14 13 2 0 0 0 0 0 0 0 0 0 29 1 4 3 25 1970 1 0 0 0 0 0 0 0 0 0 0 0 1 1 29 1 29 1971 3 8 0 0 0 0 0 0 0 0 0 0 11 1 16 2 19 1972 19 21 6 0 0 0 0 0 0 0 0 10 56 12 22 3 29 1973 18 2 1 0 0 0 0 0 0 0 0 3 24 12 15 3 10 1974 9 7 3 0 0 0 0 0 0 0 0 1 20 12 30 3 12 1975 5 3 1 0 0 0 0 0 0 *** *** *** *** 1 13 3 9 1976 3 5 0 0 0 *** 0 0 0 0 0 0 *** 1 27 2 10 1977 *** 1 0 0 0 0 0 0 0 0 0 4 *** 12 26 2 4 1978 2 0 0 0 0 0 0 0 0 0 0 2 4 12 24 1 16 1979 5 1 2 0 0 0 0 0 0 0 0 0 8 1 14 3 5 1980 11 9 2 0 0 0 0 0 0 0 0 0 22 1 3 3 17 1981 0 0 1 0 0 0 0 0 0 0 0 0 1 3 5 3 5 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1983 *** *** *** 0 0 0 0 0 0 0 0 3 *** 12 19 12 26 1984 5 8 1 0 0 0 0 0 0 0 0 8 22 12 9 3 17 1985 10 8 11 0 0 0 0 0 0 0 0 1 30 12 31 3 17 1986 *** 4 5 0 0 0 0 0 0 *** *** *** *** 2 3 3 27 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1992 *** *** *** *** *** *** *** 0 0 0 0 0 *** ** ** ** ** 1993 1 7 0 0 0 *** 0 0 *** *** *** *** *** 1 4 2 19 1994 15 9 0 *** 0 0 0 0 0 0 0 2 *** 12 8 2 21 1995 0 0 1 0 0 0 0 0 0 0 0 9 10 12 4 3 3 1996 15 3 0 0 0 0 0 0 0 0 0 0 18 1 3 2 6 1997 0 10 0 0 0 0 0 0 0 0 0 8 18 12 13 2 15 1998 7 14 6 0 0 0 0 0 0 0 0 0 27 1 9 3 27 1999 9 8 3 1 0 0 0 0 0 0 1 14 36 11 30 4 10 2000 19 19 9 0 0 0 0 0 0 0 0 11 58 12 3 3 26 MEAN 7 5 2 0 0 0 0 0 0 0 0 3 17 11 30 4 10 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 25 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 8.4 8.3 9.8 13.9 20.7 23.8 25.0 24.8 21.0 17.1 14.1 11.8 16.6 1962 8.0 9.6 11.6 13.5 18.9 22.0 26.3 25.2 21.7 17.9 13.0 10.8 16.5 1963 10.5 10.1 9.2 14.1 18.6 22.5 25.4 24.6 22.7 18.9 12.4 7.5 16.4 1964 3.5 6.9 9.2 12.0 19.3 24.1 24.9 23.9 21.5 17.0 14.0 8.2 15.4 1965 6.2 8.0 8.7 11.9 18.4 23.3 25.1 24.9 22.0 16.6 13.7 11.3 15.8 1966 11.3 9.7 11.4 15.7 18.0 23.2 26.1 26.5 21.6 17.4 14.6 11.7 17.3 1967 9.5 5.8 9.1 12.8 19.3 21.5 24.3 25.4 21.2 17.8 14.4 9.6 15.9 1968 8.8 7.3 9.2 12.3 20.1 21.0 24.1 24.5 23.3 18.7 13.8 10.0 16.1 1969 4.2 3.5 6.8 11.2 17.1 22.8 23.2 24.4 21.2 17.2 11.7 10.9 14.5 1970 8.0 9.8 10.8 14.4 20.1 22.2 24.9 25.3 21.1 17.5 14.8 9.0 16.5 1971 7.3 7.2 9.3 12.8 20.0 22.1 26.3 25.5 24.4 18.3 14.9 10.1 16.5 1972 3.5 2.7 6.3 15.8 18.4 24.4 27.2 25.5 23.7 20.6 13.2 6.7 15.7 1973 4.5 8.5 9.2 14.3 18.7 21.8 24.7 25.3 20.5 18.5 12.6 8.2 15.6 1974 5.7 5.4 8.4 12.4 19.3 23.4 23.1 23.7 21.4 18.7 15.1 9.3 15.5 1975 7.3 6.9 9.6 15.5 20.9 25.4 27.5 25.2 22.3 ****** ****** ****** ****** 1976 4.7 6.5 14.4 18.2 22.2 ****** 24.3 26.7 22.0 16.4 11.7 8.4 ****** 1977 ****** 6.4 9.1 13.7 18.3 23.4 24.7 24.4 19.7 15.4 15.4 8.4 ****** 1978 7.2 7.3 9.6 14.1 16.1 20.4 25.0 24.8 23.6 18.9 10.2 10.5 15.7 1979 7.3 7.8 9.5 13.5 18.6 22.0 25.7 26.1 23.7 19.2 14.1 10.5 16.5 1980 5.7 5.5 7.9 13.5 18.3 23.0 26.8 24.7 21.5 16.6 14.1 10.7 15.7 1981 9.4 8.8 10.2 12.5 18.3 22.7 26.0 25.7 23.2 18.6 13.9 11.8 16.8 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** 14.5 20.6 23.0 27.1 24.7 21.5 17.2 14.8 9.3 ****** 1984 7.6 4.2 8.4 13.5 18.1 22.2 26.6 24.1 22.5 17.7 13.7 6.0 15.4 1985 6.1 6.4 6.2 14.3 20.6 24.7 24.3 25.7 23.3 16.9 13.4 8.6 15.9 1986 ****** 7.2 6.8 14.1 18.7 23.7 26.2 26.4 23.9 ****** ****** ****** ****** 1987 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1988 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1989 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1990 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** 23.6 22.0 16.6 13.0 8.6 ****** 1993 5.3 4.6 7.7 12.8 17.7 ****** 24.0 25.7 ****** ****** ****** ****** ****** 1994 6.1 5.3 7.3 ****** 17.8 21.2 25.0 25.1 22.2 18.4 13.0 8.7 ****** 1995 8.1 8.0 9.4 12.7 17.8 23.2 25.8 26.2 23.2 16.0 15.5 4.1 15.8 1996 4.3 6.8 6.8 10.8 20.1 23.6 25.0 23.6 21.6 19.1 14.2 12.0 15.7 1997 7.8 7.5 11.7 13.8 19.3 25.0 25.4 26.9 21.7 19.9 13.5 9.1 16.8 1998 8.7 5.8 8.7 15.5 19.9 26.4 26.9 27.5 23.0 18.6 14.8 11.7 17.3 1999 9.6 10.4 10.7 15.0 18.3 24.2 26.1 28.3 22.7 19.0 11.9 10.0 17.2 2000 7.4 7.2 8.3 16.7 19.4 23.5 27.2 27.6 23.4 17.3 12.3 9.2 16.6 MEAN 7.1 7.1 9.1 13.8 19.0 23.1 25.5 25.4 22.2 17.9 13.6 9.4 16.1 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 26 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. AVERAGE OF DEW POINT TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 4.8 4.7 5.5 10.4 16.9 18.9 20.7 20.2 18.4 13.7 10.8 8.6 12.8 1962 5.0 6.9 9.1 10.4 15.5 18.2 21.7 21.2 18.1 14.7 9.8 7.2 13.1 1963 7.2 7.3 6.3 12.0 15.4 19.6 21.5 20.9 19.2 16.5 9.2 4.3 13.3 1964 -0.6 4.7 8.0 9.2 15.4 20.0 20.4 20.2 18.8 13.7 9.3 4.5 12.0 1965 3.2 4.4 6.6 9.7 15.4 19.6 21.1 21.6 18.6 14.4 10.9 7.1 12.7 1966 7.7 7.4 8.7 12.1 14.5 19.4 21.0 22.5 19.3 15.1 11.8 8.9 14.0 1967 5.7 3.1 6.2 9.2 15.4 17.0 19.4 20.9 18.5 15.1 11.7 6.3 12.4 1968 3.9 4.2 6.1 9.9 15.7 17.3 20.2 21.2 19.2 16.7 12.0 7.8 12.8 1969 2.1 1.4 5.4 8.4 13.9 18.4 19.1 20.6 18.0 15.0 9.1 8.1 11.6 1970 5.8 6.8 7.7 11.4 16.2 18.1 20.2 21.7 18.5 14.9 12.4 6.7 13.4 1971 4.0 4.1 7.1 10.4 16.4 17.7 21.0 20.6 19.9 15.3 12.0 7.1 13.0 1972 1.3 -0.3 3.8 11.3 14.2 20.5 22.3 20.2 19.8 17.8 10.6 4.0 12.1 1973 1.6 4.9 6.6 10.1 15.6 18.7 20.6 22.3 18.8 16.3 9.6 5.5 12.5 1974 3.2 3.3 5.8 9.9 16.4 19.7 21.0 21.1 19.1 14.5 12.6 6.4 12.7 1975 4.6 4.7 6.3 12.0 17.7 21.2 22.5 21.3 20.0 ****** ****** ****** ****** 1976 2.5 4.1 10.8 15.4 18.9 ****** 20.3 21.4 19.3 13.1 7.7 4.6 ****** 1977 ****** 3.7 6.9 10.2 14.6 19.4 20.1 20.9 15.9 12.6 12.7 5.6 ****** 1978 4.1 5.0 7.6 11.1 13.7 17.2 20.9 21.1 20.2 16.3 6.9 7.4 12.6 1979 4.3 5.1 6.9 11.2 14.6 18.2 22.1 21.7 20.6 16.6 11.4 7.6 13.4 1980 3.0 3.3 5.6 10.8 15.3 18.8 21.9 21.6 18.3 13.6 11.4 7.6 12.6 1981 6.0 6.0 7.6 9.8 14.4 18.7 22.0 22.7 19.5 15.2 10.6 8.6 13.4 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** 10.4 16.9 19.8 22.2 21.3 18.4 13.8 11.2 6.3 ****** 1984 4.4 1.3 6.5 11.0 13.4 17.7 21.3 20.3 18.7 12.7 10.7 2.8 11.7 1985 3.2 3.1 3.2 10.4 15.8 19.8 19.9 20.5 19.2 13.7 10.8 5.7 12.1 1986 ****** 4.3 4.0 10.1 14.6 18.1 20.7 21.0 19.5 ****** ****** ****** ****** 1987 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1988 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1989 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1990 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** 20.2 19.5 14.5 10.8 7.1 ****** 1993 3.6 2.8 6.3 9.5 15.5 ****** 21.0 22.0 ****** ****** ****** ****** ****** 1994 3.5 3.2 6.0 ****** 16.2 20.0 23.5 24.1 21.5 17.6 12.2 7.5 ****** 1995 7.2 6.7 8.3 11.6 16.3 21.6 22.4 23.2 20.3 14.2 14.2 2.2 14.0 1996 1.6 4.2 4.8 9.2 18.6 22.9 24.4 23.2 21.1 18.5 13.6 11.3 14.4 1997 6.3 6.1 10.9 12.9 18.4 23.5 23.1 25.5 20.9 19.1 12.8 7.8 15.6 1998 7.3 3.5 7.1 12.1 16.6 24.0 23.2 24.7 21.7 16.8 13.7 10.4 15.1 1999 7.8 6.9 9.0 12.8 15.5 19.5 21.4 23.9 19.8 16.3 9.6 7.9 14.2 2000 5.1 5.1 6.6 13.1 15.5 21.0 21.3 22.7 20.6 14.6 10.4 7.0 13.6 MEAN 4.3 4.4 6.8 10.9 15.7 19.5 21.3 21.7 19.4 15.3 11.0 6.8 13.1 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 27 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. AVERAGE OF MIXING RATIO IN G/KG YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 5.47 5.41 5.73 8.02 12.24 13.96 15.49 15.14 13.40 10.03 8.34 7.10 10.03 1962 5.49 6.28 7.30 7.96 11.13 13.31 16.58 16.06 13.30 10.68 7.78 6.44 10.19 1963 6.45 6.49 6.07 8.87 11.06 14.42 16.31 15.71 14.16 11.96 7.43 5.38 10.36 1964 3.73 5.38 6.78 7.35 11.13 14.84 15.24 15.09 13.78 9.96 7.68 5.41 9.70 1965 4.84 5.31 6.17 7.72 11.08 14.47 15.95 16.49 13.59 10.52 8.26 6.45 10.07 1966 6.65 6.50 7.07 8.96 10.49 14.32 15.89 17.44 14.20 10.88 8.81 7.24 10.71 1967 5.91 4.85 6.05 7.43 11.14 12.40 14.30 15.76 13.54 10.90 8.90 6.14 9.78 1968 5.16 5.28 5.94 7.70 11.46 12.65 15.17 16.06 14.18 12.18 8.84 6.69 10.11 1969 4.54 4.26 5.63 6.98 10.09 13.56 14.06 15.48 13.20 10.91 7.35 6.83 9.41 1970 5.83 6.23 6.71 8.55 11.74 13.17 15.09 16.48 13.54 10.77 9.17 6.28 10.30 1971 5.17 5.22 6.37 8.06 11.88 12.86 15.91 15.43 14.94 11.11 8.90 6.51 10.20 1972 4.25 3.79 5.05 8.59 10.47 15.30 17.11 15.14 14.75 13.03 8.13 5.24 10.07 1973 4.36 5.48 6.12 7.82 11.31 13.75 15.44 17.13 13.82 11.86 7.76 5.75 10.05 1974 4.83 4.90 5.87 7.80 11.92 14.68 15.82 15.92 14.03 10.60 9.36 6.19 10.16 1975 5.40 5.37 6.06 9.04 12.94 16.06 17.40 16.21 14.92 ****** ****** ****** ****** 1976 4.62 5.19 8.33 11.18 13.96 ****** 15.26 16.32 14.35 9.70 6.70 5.41 ****** 1977 ****** 5.04 6.25 7.85 10.54 14.32 14.97 15.80 11.84 9.56 9.44 5.85 ****** 1978 5.22 5.51 6.62 8.47 9.94 12.50 15.76 15.96 15.10 11.75 6.30 6.52 9.97 1979 5.24 5.58 6.36 8.41 10.58 13.28 16.92 16.65 15.61 12.09 8.57 6.62 10.49 1980 4.80 4.89 5.72 8.18 11.03 13.78 16.78 16.40 13.39 9.92 8.59 6.62 10.01 1981 5.91 5.95 6.63 7.69 10.37 13.72 16.86 17.60 14.61 10.94 8.16 7.06 10.46 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** 7.99 12.27 14.75 17.11 16.11 13.42 10.04 8.45 6.16 ****** 1984 5.32 4.24 6.07 8.29 9.86 12.85 16.17 15.14 13.76 9.52 8.18 4.71 9.51 1985 4.88 4.91 5.03 8.00 11.55 14.71 14.73 15.32 14.19 9.93 8.27 5.79 9.78 1986 ****** 5.24 5.15 7.81 10.51 13.21 15.48 15.86 14.65 ****** ****** ****** ****** 1987 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1988 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1989 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1990 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** 15.08 14.49 10.62 8.32 6.45 ****** 1993 5.01 4.74 6.17 7.67 11.30 ****** 15.94 16.91 ****** ****** ****** ****** ****** 1994 5.05 4.97 5.96 ****** 11.94 15.13 18.70 19.44 16.48 12.92 9.03 6.69 ****** 1995 6.49 6.23 7.01 8.77 11.80 16.65 17.48 18.15 15.62 10.55 10.57 4.63 11.16 1996 4.52 5.26 5.42 7.42 13.79 18.13 19.76 18.18 15.99 13.58 9.98 8.58 11.72 1997 6.14 6.17 8.36 9.61 13.64 18.52 18.08 21.13 15.87 14.37 9.39 6.82 12.34 1998 6.59 5.06 6.42 9.00 12.12 19.16 18.27 20.12 16.75 12.43 10.06 8.04 12.00 1999 6.79 6.44 7.35 9.54 11.32 14.68 16.36 19.07 14.79 11.94 7.63 6.92 11.07 2000 5.70 5.66 6.30 9.64 11.29 16.07 16.29 17.80 15.44 10.58 8.06 6.45 10.77 MEAN 5.35 5.37 6.31 8.32 11.45 14.56 16.26 16.66 14.42 11.16 8.47 6.35 10.39 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 28 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. AVERAGE OF VAPOUR PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 8.77 8.68 9.18 12.81 19.43 22.11 24.47 23.93 21.24 15.97 13.32 11.36 15.94 1962 8.81 10.07 11.68 12.72 17.70 21.10 26.14 25.35 21.07 17.00 12.44 10.32 16.20 1963 10.33 10.39 9.73 14.15 17.60 22.82 25.73 24.82 22.42 18.99 11.89 8.63 16.46 1964 6.00 8.64 10.86 11.75 17.71 23.47 24.09 23.85 21.83 15.86 12.28 8.68 15.42 1965 7.78 8.52 9.88 12.34 17.63 22.90 25.18 26.01 21.53 16.75 13.20 10.33 16.00 1966 10.65 10.41 11.32 14.31 16.71 22.66 25.08 27.46 22.48 17.32 14.06 11.59 17.00 1967 9.47 7.79 9.70 11.88 17.71 19.68 22.63 24.89 21.45 17.34 14.19 9.85 15.55 1968 8.28 8.48 9.52 12.32 18.21 20.06 23.97 25.34 22.44 19.34 14.11 10.71 16.07 1969 7.29 6.86 9.04 11.18 16.08 21.48 22.26 24.46 20.92 17.35 11.75 10.94 14.97 1970 9.35 9.98 10.74 13.66 18.66 20.88 23.86 26.00 21.46 17.14 14.62 10.06 16.37 1971 8.29 8.37 10.20 12.87 18.86 20.40 25.11 24.39 23.61 17.67 14.21 10.42 16.20 1972 6.84 6.10 8.12 13.70 16.66 24.18 26.97 23.92 23.32 20.66 12.99 8.41 15.99 1973 7.01 8.79 9.81 12.50 17.98 21.77 24.39 27.00 21.88 18.83 12.40 9.22 15.96 1974 7.76 7.87 9.41 12.46 18.93 23.22 24.99 25.13 22.22 16.87 14.92 9.92 16.14 1975 8.67 8.61 9.72 14.41 20.52 25.35 27.40 25.57 23.58 ****** ****** ****** ****** 1976 7.42 8.33 13.30 17.77 22.10 ****** 24.11 25.74 22.71 15.46 10.73 8.68 ****** 1977 ****** 8.10 10.02 12.55 16.77 22.67 23.67 24.95 18.79 15.23 15.05 9.37 ****** 1978 8.38 8.83 10.60 13.52 15.84 19.84 24.88 25.20 23.87 18.66 10.10 10.45 15.85 1979 8.41 8.95 10.18 13.44 16.85 21.06 26.67 26.25 24.64 19.19 13.69 10.60 16.66 1980 7.71 7.85 9.17 13.06 17.55 21.82 26.45 25.88 21.22 15.80 13.71 10.61 15.90 1981 9.48 9.54 10.62 12.29 16.51 21.73 26.58 27.72 23.09 17.40 13.04 11.30 16.61 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** 12.77 19.48 23.33 26.97 25.42 21.27 16.00 13.49 9.87 ****** 1984 8.54 6.82 9.73 13.24 15.71 20.39 25.52 23.93 21.79 15.17 13.07 7.56 15.12 1985 7.84 7.88 8.07 12.78 18.35 23.26 23.30 24.21 22.46 15.83 13.22 9.28 15.54 1986 ****** 8.40 8.26 12.49 16.72 20.94 24.46 25.04 23.16 ****** ****** ****** ****** 1987 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1988 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1989 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1990 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** 23.85 22.93 16.89 13.28 10.32 ****** 1993 8.04 7.61 9.88 12.25 17.96 ****** 25.16 26.66 ****** ****** ****** ****** ****** 1994 8.10 7.97 9.55 ****** 18.95 23.90 29.37 30.50 25.98 20.49 14.41 10.71 ****** 1995 10.39 9.99 11.22 13.99 18.74 26.23 27.51 28.56 24.64 16.78 16.81 7.43 17.69 1996 7.25 8.45 8.71 11.87 21.82 28.50 30.99 28.61 25.23 21.52 15.90 13.70 18.54 1997 9.84 9.88 13.36 15.32 21.60 29.12 28.45 33.07 25.05 22.72 14.97 10.92 19.52 1998 10.55 8.11 10.28 14.36 19.24 30.09 28.73 31.55 26.39 19.71 16.03 12.85 18.99 1999 10.87 10.31 11.75 15.20 17.98 23.21 25.81 29.96 23.38 18.95 12.19 11.06 17.56 2000 9.13 9.08 10.09 15.36 17.94 25.34 25.70 28.00 24.39 16.84 12.88 10.33 17.09 MEAN 8.58 8.61 10.12 13.29 18.20 23.02 25.65 26.27 22.80 17.73 13.51 10.18 16.50 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 29 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. AVERAGE OF SATURATION DEFICIT PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 2.50 2.50 3.42 3.57 5.62 7.99 7.50 7.80 3.85 3.93 3.22 2.81 4.56 1962 2.13 2.12 2.17 2.91 4.56 5.82 8.48 7.18 5.40 4.01 2.96 3.09 4.24 1963 2.67 2.31 2.23 2.20 4.17 4.75 7.01 6.57 5.65 3.20 2.93 2.29 3.83 1964 2.13 1.48 0.88 2.64 5.14 6.97 7.66 6.09 4.07 3.95 4.25 2.54 3.98 1965 1.85 2.53 1.58 2.09 4.12 6.00 7.11 5.80 5.32 2.60 2.91 3.51 3.79 1966 3.15 1.90 2.46 3.92 4.40 6.34 9.50 7.74 3.58 2.87 3.01 2.43 4.28 1967 2.94 1.75 2.12 3.39 5.26 6.64 8.18 8.13 4.14 3.38 2.68 2.54 4.26 1968 3.65 2.06 2.44 2.26 6.00 5.46 6.83 5.91 6.84 2.70 1.94 1.76 3.99 1969 1.16 1.17 0.93 2.50 4.07 7.19 6.71 6.77 5.11 2.71 2.50 2.37 3.60 1970 1.60 2.44 2.83 3.29 5.62 6.44 8.41 6.78 4.06 3.21 2.57 1.74 4.08 1971 2.22 2.11 1.74 2.40 4.96 6.89 9.73 8.71 7.78 3.96 3.17 2.44 4.68 1972 1.26 1.57 1.79 5.35 5.04 6.93 9.68 9.53 6.35 4.08 2.72 1.71 4.67 1973 1.66 2.88 2.18 4.26 4.25 4.81 7.30 5.82 2.62 2.93 2.78 1.98 3.62 1974 1.52 1.32 1.93 2.49 4.00 6.09 3.67 4.60 3.53 5.56 2.60 2.15 3.29 1975 1.96 1.52 2.82 3.99 4.76 7.60 9.76 7.23 3.87 ****** ****** ****** ****** 1976 1.27 1.53 3.97 3.50 5.08 ****** 6.82 10.45 4.16 3.88 3.50 2.71 ****** 1977 ****** 1.77 1.67 3.60 4.64 6.59 7.83 6.24 5.20 3.10 3.04 1.95 ****** 1978 1.97 1.62 1.60 3.39 2.80 4.63 7.48 6.56 5.80 3.50 2.65 2.68 3.72 1979 2.22 2.01 2.11 2.26 5.12 5.82 6.67 8.27 5.36 3.54 2.80 2.49 4.06 1980 1.82 1.32 1.70 2.82 4.03 6.60 9.31 5.59 4.75 3.58 2.83 2.68 3.92 1981 2.73 2.11 2.25 2.62 4.93 6.28 7.43 5.65 5.97 4.48 3.42 3.04 4.24 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** 4.32 5.15 5.14 9.39 6.20 4.69 4.10 3.90 2.65 ****** 1984 2.25 1.64 1.36 2.47 5.87 6.91 9.91 6.43 5.88 5.99 2.89 2.01 4.47 1985 1.88 2.23 1.88 4.02 6.68 8.32 7.41 9.47 6.74 3.85 2.49 2.24 4.77 1986 ****** 1.99 1.80 3.54 5.31 8.93 9.96 9.85 7.34 ****** ****** ****** ****** 1987 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1988 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1989 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1990 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** 5.54 4.05 2.62 2.20 1.10 ****** 1993 1.21 1.04 0.98 3.17 2.74 ****** 5.16 6.68 ****** ****** ****** ****** ****** 1994 1.54 1.13 0.90 ****** 2.19 1.76 2.67 1.79 1.15 0.97 0.82 0.85 ****** 1995 0.65 0.94 0.84 1.10 1.83 2.81 6.19 5.86 4.93 2.15 1.31 0.98 2.47 1996 1.33 1.78 1.30 1.36 2.14 1.09 1.19 0.65 0.77 0.79 0.63 0.66 1.14 1997 1.00 0.88 0.67 0.90 1.17 2.77 4.39 2.78 1.21 1.07 0.72 0.98 1.54 1998 1.01 1.37 1.18 4.00 4.51 4.61 7.25 5.66 2.23 2.41 1.16 1.12 3.04 1999 1.33 2.83 1.41 2.29 3.57 7.51 8.38 9.13 4.74 3.65 2.09 1.76 4.06 2000 1.62 1.49 1.21 4.29 5.31 4.21 10.93 9.37 4.67 3.30 1.74 1.68 4.15 MEAN 1.87 1.79 1.82 3.03 4.39 5.80 7.45 6.67 4.60 3.29 2.53 2.09 3.78 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 30 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. AVERAGE OF RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 80 79 76 80 80 75 78 77 85 82 82 81 80 1962 82 84 86 83 82 80 77 80 81 83 82 81 82 1963 82 84 84 88 82 84 80 81 81 87 83 82 83 1964 76 87 93 85 79 79 77 81 85 82 76 79 82 1965 82 80 87 88 83 81 79 83 82 88 84 77 83 1966 81 86 85 81 81 80 75 80 87 87 84 84 83 1967 79 84 84 80 80 77 76 77 86 85 85 82 81 1968 74 82 83 86 77 81 80 83 79 89 89 87 83 1969 87 87 91 85 83 78 79 80 83 88 85 84 84 1970 87 83 83 83 80 79 77 81 86 86 87 87 83 1971 81 83 87 87 81 77 74 76 77 84 83 83 81 1972 86 82 85 77 79 80 76 74 80 85 85 84 81 1973 82 80 85 79 83 83 79 84 90 87 83 84 83 1974 85 87 85 86 84 81 89 86 87 78 86 83 85 1975 83 87 82 81 83 79 75 80 87 *** *** *** *** 1976 86 86 80 84 82 *** 79 74 85 81 77 78 *** 1977 *** 84 87 80 80 79 76 81 80 84 85 84 *** 1978 82 85 88 83 86 82 79 80 82 86 81 82 83 1979 83 84 84 87 79 80 81 77 84 86 85 83 83 1980 84 86 86 85 83 78 76 84 83 83 85 83 83 1981 80 84 85 85 79 79 79 84 81 82 82 82 82 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 78 80 83 76 82 83 81 80 82 *** 1984 81 82 88 85 76 76 74 80 80 74 83 81 80 1985 83 81 83 79 75 75 77 74 78 82 85 82 80 1986 *** 82 83 81 78 72 73 73 77 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 82 86 88 88 91 *** 1993 89 89 91 81 87 *** 84 81 *** *** *** *** *** 1994 84 87 92 *** 91 93 92 94 96 96 95 92 *** 1995 94 92 93 93 91 91 83 84 84 89 93 88 90 1996 84 84 88 90 91 96 96 98 97 96 96 95 93 1997 91 91 95 95 95 92 87 93 95 96 95 92 93 1998 91 86 90 82 82 87 81 86 93 90 94 92 88 1999 89 82 90 88 85 76 76 78 84 86 87 88 84 2000 87 87 90 81 80 86 71 76 85 85 89 87 84 MEAN 84 85 87 84 82 81 79 81 85 86 86 85 84 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 31 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. AVERAGE OF MAXIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 88 88 87 90 89 85 87 85 92 90 91 89 88 1962 90 92 93 92 91 90 86 89 89 90 90 89 90 1963 92 93 93 95 90 91 89 90 89 94 92 92 92 1964 86 94 97 93 89 88 87 90 93 89 87 89 90 1965 91 90 93 94 91 90 88 90 90 94 93 87 91 1966 91 94 94 90 92 90 87 89 94 95 92 91 92 1967 89 92 93 89 91 88 87 88 92 92 93 89 90 1968 86 93 94 95 89 93 90 92 89 95 96 95 92 1969 94 94 97 94 93 89 88 89 90 95 93 93 92 1970 94 92 92 93 90 90 88 91 92 93 94 94 92 1971 89 94 93 93 92 89 87 87 86 92 91 90 90 1972 94 92 94 91 89 89 86 84 90 94 93 91 91 1973 92 91 94 90 92 92 87 92 95 93 91 92 92 1974 93 93 93 95 93 90 95 93 93 88 92 91 92 1975 91 94 91 90 90 87 86 88 94 *** *** *** *** 1976 94 94 88 91 89 *** 87 84 89 87 83 85 *** 1977 *** 91 93 89 91 86 84 90 88 90 91 90 *** 1978 89 91 95 94 93 91 91 91 87 92 89 90 91 1979 90 92 92 94 89 89 90 86 91 93 93 92 91 1980 92 94 93 93 92 87 89 94 92 92 93 92 92 1981 90 92 93 93 89 87 86 91 89 91 91 92 90 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 90 89 89 84 90 91 90 90 90 *** 1984 91 90 92 92 86 85 84 89 87 86 92 91 89 1985 91 90 90 89 87 85 86 83 86 90 90 88 88 1986 *** 90 90 91 89 81 83 82 83 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 87 92 95 95 96 *** 1993 96 95 95 89 92 *** 92 88 *** *** *** *** *** 1994 92 93 95 *** 95 97 95 97 98 98 97 96 *** 1995 96 95 96 95 94 95 91 92 91 94 96 93 94 1996 90 91 93 94 95 98 98 98 98 98 98 97 96 1997 96 96 97 97 97 95 92 96 97 97 97 95 96 1998 94 93 94 93 91 93 87 91 96 95 97 94 93 1999 93 93 95 94 92 83 84 85 91 93 94 94 91 2000 94 94 94 91 90 91 78 85 92 92 94 93 91 MEAN 92 93 93 92 91 89 88 89 91 92 93 92 91 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 32 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. AVERAGE OF MINIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 69 68 64 71 68 64 68 66 78 71 70 72 69 1962 71 76 77 72 72 69 66 70 70 73 71 69 71 1963 69 72 73 80 75 77 70 69 71 77 70 69 73 1964 64 77 87 75 69 69 68 71 77 71 64 67 72 1965 72 68 79 80 73 70 70 74 71 79 72 64 73 1966 68 76 73 71 69 70 63 68 79 77 71 75 72 1967 66 72 74 68 66 64 64 65 78 76 75 70 70 1968 60 70 69 77 63 69 68 72 68 81 80 77 71 1969 78 78 85 74 71 66 69 71 73 79 73 73 74 1970 78 73 74 72 67 67 64 70 77 76 76 77 73 1971 70 68 79 79 68 65 60 63 67 73 74 74 70 1972 76 69 74 62 65 69 63 62 68 75 75 76 70 1973 71 66 74 66 73 75 67 74 85 81 72 73 73 1974 76 79 75 78 73 71 81 78 80 66 80 74 76 1975 73 78 71 70 74 69 65 70 80 *** *** *** *** 1976 78 77 72 78 76 *** 71 60 80 75 70 71 *** 1977 *** 76 80 73 71 73 69 75 73 78 78 78 *** 1978 74 79 81 75 79 76 69 72 76 79 72 73 75 1979 73 75 75 79 71 73 74 71 76 78 75 71 74 1980 73 77 77 77 75 71 65 76 74 72 74 70 73 1981 68 74 76 76 70 72 72 77 71 70 71 70 72 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 68 72 76 68 76 76 72 68 70 *** 1984 70 73 83 79 66 69 66 73 72 60 75 70 71 1985 73 71 74 70 66 67 69 66 71 74 80 74 71 1986 *** 74 76 69 69 64 64 65 72 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 77 79 80 78 84 *** 1993 80 81 87 73 82 *** 76 75 *** *** *** *** *** 1994 75 79 88 *** 86 89 88 91 93 93 92 88 *** 1995 91 88 89 91 88 86 73 76 77 84 88 83 85 1996 75 77 80 84 87 94 95 97 96 95 94 92 89 1997 84 85 92 91 92 88 83 88 93 93 93 88 89 1998 88 78 85 70 71 81 72 79 89 84 89 89 81 1999 84 67 84 80 77 67 69 69 75 75 78 79 75 2000 76 78 85 68 68 81 64 68 77 76 82 79 75 MEAN 74 75 79 75 73 73 70 73 77 77 77 75 75 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 33 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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 1961 8 5 3 5 5 1 3 3 6 9 4 3 55 1962 9 3 3 7 5 4 3 6 5 6 7 10 68 1963 5 5 8 2 4 6 1 5 2 10 8 6 62 1964 6 3 4 9 1 2 0 5 5 7 4 6 52 1965 5 1 4 7 2 2 4 3 4 12 6 5 55 1966 1 5 6 4 3 3 1 4 9 11 3 0 50 1967 2 8 9 1 2 1 2 0 9 6 6 5 51 1968 4 4 7 4 2 5 3 1 4 7 6 6 53 1969 10 9 7 5 4 4 4 1 9 8 7 4 72 1970 9 4 5 4 3 2 3 3 6 6 6 7 58 1971 4 5 7 11 2 3 0 1 0 5 0 4 42 1972 11 6 5 2 5 5 1 2 2 6 9 11 65 1973 4 3 8 1 3 4 1 7 8 4 4 8 55 1974 4 6 5 7 2 4 9 5 7 0 5 3 57 1975 1 6 6 2 3 2 0 2 6 *** *** *** *** 1976 4 4 3 1 4 *** 1 1 10 9 6 8 *** 1977 *** 2 4 1 4 2 4 6 5 9 6 8 *** 1978 3 5 5 1 6 4 1 2 3 8 8 6 52 1979 7 5 5 4 4 3 3 1 6 3 5 7 53 1980 5 7 6 4 1 0 1 8 3 7 5 7 54 1981 4 4 8 4 6 3 3 4 4 6 4 4 54 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** 2 5 5 0 4 2 6 8 10 *** 1984 5 5 6 2 5 3 0 7 2 6 6 6 53 1985 5 9 6 2 0 1 4 2 4 6 7 8 54 1986 *** 2 5 2 1 2 0 0 3 *** *** *** *** 1987 *** *** *** *** *** *** *** *** *** *** *** *** *** 1988 *** *** *** *** *** *** *** *** *** *** *** *** *** 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** *** *** *** *** *** *** *** *** *** *** 1991 *** *** *** *** *** *** *** *** *** *** *** *** *** 1992 *** *** *** *** *** *** *** 6 7 5 4 5 *** 1993 3 5 3 2 3 *** 5 1 *** *** *** *** *** 1994 2 11 3 *** 4 9 0 2 4 11 8 3 *** 1995 5 8 3 2 1 5 3 2 3 11 0 6 49 1996 7 6 3 5 0 3 2 3 4 4 0 2 39 1997 7 1 1 1 2 2 6 1 11 2 3 3 40 1998 3 5 3 4 3 2 3 2 12 6 10 4 57 1999 4 1 3 2 6 1 3 4 5 5 8 2 44 2000 8 2 6 1 7 4 0 4 5 4 7 4 52 MEAN 5 5 5 3 3 3 2 3 5 7 5 6 52 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 34 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. HIGHEST AND LOWEST LIMITS FOR 40 YEARS DURING 1961-2000 ELE- JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MENT --------------------------------------------------------------------------------------------- NO. HIG. DRY 03 16.8 14.8 19.4 24.4 25.0 26.4 28.0 27.8 26.0 23.0 22.0 15.0 1 YEAR - DAY 1968-14 1970-13 1968-13 1973-18 1970-23 1998-18 2000-22 2000- 4 1972- 5 1977-26 1983-22 1962-18 LOW. DRY 03 -7.2 -6.8 -4.4 1.6 8.4 10.4 13.8 17.0 7.0 5.0 2.2 -4.0 2 YEAR - DAY 1964-30 1972- 2 1985-12 1981- 3 1978- 4 1978- 3 1968-13 1977-30 1977-24 1977-19 1969-19 1963-26 HIG. WET 03 11.0 10.8 15.2 18.3 21.8 25.4 27.0 25.4 25.2 21.4 18.0 14.2 3 YEAR - DAY 1966-27 1962-18 1976-15 1976-30 1997-31 1998-19 1996-24 1998-31 1997- 1 1972- 2 1970- 8 1996-25 LOW. WET 03 -7.4 -6.8 -4.6 1.0 7.3 8.0 13.4 14.4 5.2 3.4 0.4 -4.6 4 YEAR - DAY 1964-30 1972- 2 1985-11 1981- 3 1978- 4 1967- 6 1968-13 1972-30 1977-24 1977-19 1964-30 1963-26 HIG. DRY 09 25.8 22.8 29.2 33.0 31.8 32.6 34.8 35.0 33.6 31.5 28.6 25.8 5 YEAR - DAY 1967-15 1973-19 1976-14 1978- 6 1980-22 1998-22 1984-22 1976- 6 1978- 9 1978-23 1979- 2 1980- 5 LOW. DRY 09 -1.8 -1.2 2.0 4.0 12.2 12.6 18.8 18.4 11.0 9.0 7.0 0.4 6 YEAR - DAY 1964-19 1993-16 1985-10 1981- 1 1969- 7 1967- 5 1968-12 1975-17 1977-23 1976-30 1984-30 1963-25 HIG. WET 09 18.2 19.0 24.4 27.8 28.2 30.0 31.6 32.0 32.0 27.0 24.6 23.0 7 YEAR - DAY 1993-28 1999-27 1976-14 1978-10 1976-10 1995-29 1996-19 1997-31 1997- 1 1998- 5 1995- 4 1999-29 LOW. WET 09 -2.2 -1.4 1.0 3.6 10.8 11.6 17.2 18.0 9.0 8.2 5.6 0.2 8 YEAR - DAY 1964-19 1993-16 1985-10 1981- 1 1969- 7 1967- 5 1968-12 1975-17 1977-23 1976-30 1984-30 1963-25 HIG. DRY 15 24.6 21.0 24.2 29.6 31.0 30.6 30.8 32.0 28.6 25.0 22.0 19.0 9 YEAR - DAY 1968-13 1963-23 1976-14 1998-14 1984-26 1998-22 1966-26 1983-15 1986- 5 1972- 5 1995- 9 1965-26 LOW. DRY 15 -2.4 -0.4 0.4 2.8 9.8 13.4 17.0 17.8 8.2 7.0 5.4 -2.0 10 YEAR - DAY 1964-19 1985-23 1969-23 1981- 1 1984- 1 1967- 5 1968-12 1975-17 1977-23 1976-30 1992-27 1963-26 HIG. WET 15 16.0 15.0 17.4 23.2 25.4 28.0 29.6 29.4 28.0 23.8 21.8 16.4 11 YEAR - DAY 1967-12 1999- 8 1976-14 1972-30 1976-10 1995-30 1996-24 1999-23 1997- 1 1998- 1 1995- 9 1998-31 LOW. WET 15 -2.6 -1.2 0.2 2.4 8.0 10.6 16.4 16.0 7.4 5.4 4.8 -2.6 12 YEAR - DAY 1964-19 1994-16 1969-23 1981- 1 1972-28 1968- 3 1968-12 1975-17 1977-23 1976-30 1964-30 1963-26 HIG. MIN. 16.0 11.5 17.0 19.5 20.5 24.0 25.5 25.5 25.0 21.0 16.8 12.5 13 YEAR - DAY 1968-14 1963-23 1976-15 1965-29 1968-21 1996-13 1983-20 1997-14 1997- 1 1972- 2 1979- 3 1962-21 LOW. MIN. -8.5 -8.0 -7.0 0.0 4.5 8.5 12.5 15.0 5.0 4.2 -2.0 -5.5 14 YEAR - DAY 1964-30 1972- 2 2000-16 1999-10 1984- 2 2000-12 1999- 7 1975-18 1977-24 1977-19 1999-30 1963-26 HIG. MAX. 26.5 24.5 30.0 34.0 33.0 35.5 35.0 38.0 34.0 32.4 30.6 28.0 15 YEAR - DAY 1967-15 1996- 9 1976-14 1978- 6 1984-26 1980- 4 1976-30 1976- 8 1978- 9 1978-23 1981- 4 1980- 5 LOW. MAX. -0.6 2.0 2.5 4.2 13.0 15.5 20.5 20.0 11.5 9.1 8.0 2.4 16 YEAR - DAY 1964-19 1969-10 1969-23 1981- 1 1969- 7 1967- 5 1968-12 1977-29 1977-23 1976-30 1976-29 1972-23 HIG. PPTN 83.0 73.4 50.0 44.5 56.0 76.8 160.0 113.0 204.0 205.0 170.0 81.0 17 YEAR - DAY 1970- 1 1967-14 1980-15 1968- 4 1981-16 1961- 6 1999-12 1975-16 1966-21 1995-18 1978- 2 1979-16 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 35 STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. HIGHEST LIMITS OF ABSOLUTE DIFFERENCES FOR 40 YEARS DURING 1961-2000 ELE- JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MENT --------------------------------------------------------------------------------------------- NO. DRY 09 - DRY 03 17.4 18.0 17.4 20.9 15.2 14.2 13.8 13.2 17.2 17.2 16.6 20.8 18 YEAR - DAY 1967-15 1986-20 1981-13 1993-10 1969-22 1967- 3 1970-19 1970-20 1968-27 1974-27 1979- 2 1983-29 DRY 15 - DRY 09 14.6 17.0 14.8 10.6 10.6 8.8 10.4 9.6 9.4 11.2 10.4 16.8 19 YEAR - DAY 1993-28 1999-24 1973- 2 1970-20 2000- 4 1973-16 1966- 1 1976-26 1962-28 1974-20 1973-13 1983-29 DRY 15 - DRY 03 14.6 12.4 15.0 16.8 12.6 10.2 10.8 10.0 10.8 11.0 11.2 13.6 20 YEAR - DAY 1968-13 1996- 9 1970-28 1998-14 1970-12 1967- 3 1970-19 1983-15 1986- 5 1984-14 1972-24 1998-29 WET 09 - WET 03 14.8 15.4 15.0 16.1 14.0 12.4 10.4 9.8 14.8 13.6 13.4 16.8 21 YEAR - DAY 1996-26 2000-22 2000-16 1993- 1 1999-22 1999-18 1995- 3 1969-31 1972-30 1998-15 1976- 3 1999-29 WET 15 - WET 09 12.2 15.2 9.8 9.2 11.6 9.4 7.4 7.6 8.4 9.0 8.2 13.6 22 YEAR - DAY 1993-28 1994-19 2000-11 1971-13 1972-28 1968- 3 1995- 2 1994-23 2000- 8 1974-28 1995- 4 1999-29 WET 15 - WET 03 11.4 11.4 14.0 12.8 9.6 8.4 9.6 9.2 13.0 11.2 10.6 12.4 23 YEAR - DAY 1996-26 1999-23 1995- 3 1993-10 1994-20 1971-20 1969-13 1961-19 1972-30 1992-10 1977-25 1998-29 DAY BY DAY DRY 03 11.2 9.8 13.8 13.4 7.8 9.0 5.8 5.6 10.0 11.6 13.0 12.8 24 YEAR - DAY 2000-19 1965-24 1968-13 1973-18 1980-16 2000-12 1965-16 1969-16 1977-23 1977-23 1983-23 1962-17 DAY BY DAY WET 03 9.4 9.4 8.8 8.2 7.2 8.2 6.6 7.0 9.8 11.0 9.6 10.2 25 YEAR - DAY 1998- 9 1979-18 1970-18 1974-14 2000- 9 2000-12 1980- 4 1969-16 1977-23 1977-23 1998-16 1963-25 DAY BY DAY DRY 09 14.8 13.6 15.6 22.0 15.2 12.8 8.0 10.2 13.0 16.1 11.2 12.2 26 YEAR - DAY 1979- 5 1973-20 1973- 3 1978-11 1962-18 2000-12 1972-27 1966-31 1977-23 1992-25 1992-24 1963-11 DAY BY DAY WET 09 11.6 11.2 10.2 17.4 9.6 11.0 7.0 6.6 12.4 15.0 8.2 10.0 27 YEAR - DAY 2000-19 1994-19 1976-15 1978-11 1994-17 2000-12 1996-16 1997-30 1977-23 1995-28 1978- 2 1963-25 DAY BY DAY DRY 15 16.6 11.6 9.6 17.3 9.6 9.0 6.8 8.2 12.8 12.9 12.0 10.4 28 YEAR - DAY 1968-13 1999-24 1975-15 1978-11 2000- 4 2000-12 1999-12 1977-19 1977-23 1992-25 1964-27 1995- 1 DAY BY DAY WET 15 10.8 11.4 8.0 11.0 11.0 9.4 5.8 7.0 12.0 12.0 8.0 11.4 29 YEAR - DAY 2000-19 1999-24 1972-29 1978-11 1972-29 1968- 4 1998-31 1997-30 1977-23 1995-28 1973-14 1995- 1 DAY BY DAY MIN. 10.0 9.5 10.0 8.5 7.0 7.5 5.1 6.5 11.0 11.5 11.5 10.5 30 YEAR - DAY 1994- 8 1979-18 1968-13 1997- 6 2000- 9 1996-13 1968-13 1969-16 1977-23 1977-23 1964-28 1963-25 DAY BY DAY MAX. 16.0 14.0 16.5 22.8 14.3 13.0 8.2 10.0 13.6 16.0 12.4 12.5 31 YEAR - DAY 1979- 5 1996- 2 1973- 3 1978-11 1962-18 2000-12 1972-27 1966-31 1977-23 1995-28 1979- 3 1981-19 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. MEAN AND EXTREMES FOR THE YEAR 1961 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 8.3 8.1 9.6 13.8 20.4 23.1 24.8 24.5 21.1 17.0 14.0 11.6 16.4 AVERAGE OF MINIMUM TEMPERATURE IN C. 4.7 4.5 5.5 10.1 16.1 18.6 21.5 20.4 18.5 13.4 9.9 7.0 12.5 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.9 11.7 13.6 17.4 24.7 27.6 28.2 28.6 23.6 20.5 18.1 16.2 20.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 7.2 7.2 8.1 7.3 8.6 9.0 6.7 8.2 5.1 7.1 8.2 9.2 7.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.91 4.92 5.21 7.27 10.94 12.75 14.73 13.70 12.41 9.30 7.10 5.73 9.08 MEAN OF MIXING RATIO AT 09 GMT. 5.59 5.54 5.77 8.41 12.82 14.23 15.73 15.55 13.88 10.42 8.89 7.96 10.40 MEAN OF MIXING RATIO AT 15 GMT. 5.91 5.76 6.19 8.36 12.95 14.91 16.01 16.16 13.90 10.35 9.03 7.61 10.60 ABSOLUTE OF MINIMUM TEMPERATURE IN C. 1.0 -2.0 0.5 4.0 12.0 14.0 18.5 17.0 14.5 8.5 4.5 1.5 -2.0 DAY 25 1 4 17 2 7 7 9 20 30 27 27 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 19.5 19.5 26.5 25.0 30.5 32.0 31.0 33.0 27.5 30.0 22.0 22.0 33.0 DAY 18 7 24 22 23 22 1 19 12 15 16 22 24 HOUR MAXIMUM PRECIPITATION IN MM. 45.0 15.7 11.5 38.8 11.2 76.8 20.2 14.2 92.0 54.5 99.0 19.5 99.0 DAY 28 25 10 15 17 6 12 7 2 24 14 16 MONTHLY TOTAL PRECIPITATION IN MM. 115.5 60.2 38.5 99.3 43.3 81.3 40.1 43.4 210.6 222.6 228.1 32.8 1215.7 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 17.6 18.4 24.2 39.8 NO. OF DAYS WITH PRECIPITATION. 12 8 8 10 7 2 6 6 17 11 6 3 96 NO. OF DAYS PRECIPITATION EQUAL 11 8 8 9 6 2 6 6 15 11 5 3 90 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 4 3 1 3 2 1 1 3 4 7 4 1 34 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 83 86 84 87 89 84 86 84 89 89 85 83 86 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 70 69 65 72 69 64 68 67 79 72 71 74 70 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 86 83 80 82 83 78 80 80 88 84 88 87 83 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 4 22 12 2 0 0 0 40 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 2 6 8 9 0 1 0 0 26 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. 0 2 0 0 0 0 0 0 0 0 0 0 2 DATE OF START AND END FREEZING START = 1 FEB. END = 2 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. MEAN AND EXTREMES FOR THE YEAR 1962 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 8.0 9.5 11.6 13.3 18.6 21.6 26.0 24.7 21.6 17.9 13.1 10.8 16.4 AVERAGE OF MINIMUM TEMPERATURE IN C. 4.5 6.1 8.5 10.2 15.1 17.7 21.8 20.7 17.8 14.1 9.5 6.6 12.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.5 13.0 14.7 16.4 22.0 25.5 30.2 28.6 25.4 21.7 16.8 14.9 20.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 7.0 6.9 6.2 6.2 6.9 7.8 8.4 7.9 7.6 7.6 7.3 8.3 7.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.97 5.64 6.69 7.55 10.49 12.60 14.90 14.32 11.76 9.64 7.08 5.72 9.28 MEAN OF MIXING RATIO AT 09 GMT. 5.71 6.60 7.53 7.97 11.25 13.54 17.22 16.90 13.98 11.20 8.12 6.87 10.57 MEAN OF MIXING RATIO AT 15 GMT. 5.79 6.60 7.67 8.36 11.65 13.79 17.61 16.97 14.16 11.20 8.16 6.73 10.72 ABSOLUTE OF MINIMUM TEMPERATURE IN C. 1.0 1.5 2.5 6.5 11.0 11.0 19.5 18.0 13.0 7.0 3.0 1.0 1.0 DAY 25 14 13 14 1 11 7 11 28 12 16 11 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.0 23.0 21.5 20.5 31.5 30.5 33.0 32.0 30.0 26.5 21.5 24.0 33.0 DAY 4 16 4 8 17 7 24 22 1 7 1 20 24 HOUR MAXIMUM PRECIPITATION IN MM. 29.0 30.8 40.5 15.5 10.4 32.9 16.5 34.6 131.0 109.2 64.0 31.5 131.0 DAY 5 9 11 21 19 17 12 4 17 22 13 10 MONTHLY TOTAL PRECIPITATION IN MM. 116.7 63.8 88.5 81.2 49.1 82.7 33.4 121.0 261.1 368.2 176.6 150.9 1593.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 16.9 13.4 26.1 43.7 NO. OF DAYS WITH PRECIPITATION. 12 7 8 15 11 8 5 9 8 9 11 14 117 NO. OF DAYS PRECIPITATION EQUAL 11 6 7 14 10 6 4 7 8 9 9 12 103 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 2 2 2 2 3 1 6 5 5 6 7 44 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 89 89 90 90 89 88 84 87 85 88 88 84 88 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 73 76 78 72 72 71 66 70 71 74 71 71 72 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 85 88 89 86 84 83 81 82 87 86 87 87 85 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 1 26 16 3 0 0 0 46 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 1 2 18 11 2 0 0 0 34 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. 0 0 0 0 0 0 0 0 0 0 0 0 0 DATE OF START AND END FREEZING START = ** **** END = ** **** IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. MEAN AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 10.5 10.1 9.1 13.9 18.3 22.2 25.0 24.7 22.6 18.8 12.7 7.8 16.3 AVERAGE OF MINIMUM TEMPERATURE IN C. 6.4 7.1 5.0 11.3 15.1 18.9 21.5 21.1 19.1 15.6 8.4 3.1 12.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 14.7 13.2 13.3 16.5 21.6 25.5 28.6 28.2 26.2 22.0 17.0 12.4 19.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.3 6.1 8.3 5.2 6.5 6.6 7.1 7.1 7.1 6.4 8.6 9.3 7.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 5.71 6.10 5.53 8.62 10.58 13.62 15.23 14.83 12.92 11.12 6.47 4.61 9.61 MEAN OF MIXING RATIO AT 09 GMT. 6.60 6.68 6.39 9.13 11.54 15.00 16.78 15.88 14.63 12.38 7.93 5.86 10.73 MEAN OF MIXING RATIO AT 15 GMT. 7.04 6.68 6.29 8.85 11.07 14.63 16.92 16.43 14.94 12.37 7.90 5.67 10.73 ABSOLUTE OF MINIMUM TEMPERATURE IN C. 1.5 1.5 -1.5 8.0 11.5 15.0 16.5 18.5 15.5 11.5 1.5 -5.5 -5.5 DAY 6 9 8 1 4 13 1 4 10 19 27 26 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 23.0 23.0 25.0 25.5 28.0 30.0 32.0 32.5 29.0 25.5 23.0 22.0 32.5 DAY 15 20 25 29 27 19 21 24 21 12 15 23 24 HOUR MAXIMUM PRECIPITATION IN MM. 22.3 21.8 29.5 10.8 11.5 17.8 11.2 14.8 36.3 122.0 95.5 53.5 122.0 DAY 18 25 6 21 11 16 26 2 23 18 2 11 MONTHLY TOTAL PRECIPITATION IN MM. 91.9 72.9 138.8 39.1 47.9 77.7 23.8 80.8 93.4 327.7 255.6 165.7 1415.3 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 21.5 11.6 14.0 52.9 NO. OF DAYS WITH PRECIPITATION. 11 11 15 15 9 10 6 13 11 18 12 9 140 NO. OF DAYS PRECIPITATION EQUAL 10 11 15 10 8 9 6 11 10 17 10 8 125 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 2 5 1 2 2 1 5 2 5 7 4 39 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 87 92 91 95 88 90 87 89 88 92 87 87 89 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 70 74 74 81 77 77 70 69 71 77 72 70 74 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 89 86 87 88 82 85 82 85 85 91 90 90 87 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 2 2 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 23 20 8 0 0 0 54 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 0 1 8 8 0 0 0 0 17 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. 0 0 2 0 0 0 0 0 0 0 0 7 9 DATE OF START AND END FREEZING START = 12 DEC. END = 8 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 3.7 6.7 9.2 12.0 18.8 23.8 24.6 23.7 21.3 17.1 13.9 8.3 15.3 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.9 3.4 6.7 8.4 15.0 20.0 20.9 20.6 18.3 13.5 9.2 4.4 11.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.3 10.0 11.8 15.5 22.6 27.6 28.2 26.8 24.3 20.8 18.7 12.1 18.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.2 6.6 5.1 7.1 7.6 7.6 7.3 6.2 6.0 7.3 9.5 7.7 7.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.19 4.89 6.32 7.03 10.47 13.95 14.33 14.04 12.48 9.00 6.61 4.79 8.93 MEAN OF MIXING RATIO AT 09 GMT. 3.95 5.63 7.22 7.48 11.47 15.18 15.67 15.24 14.29 10.43 8.32 5.61 10.04 MEAN OF MIXING RATIO AT 15 GMT. 4.08 5.63 6.82 7.52 11.46 15.39 15.72 15.98 14.56 10.43 8.13 5.83 10.13 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.5 -2.0 2.2 3.6 7.5 17.0 18.6 18.0 14.5 9.8 2.5 -1.5 -8.5 DAY 30 1 9 15 2 1 7 26 17 8 30 27 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 13.5 13.0 20.5 27.2 26.2 31.5 31.0 30.5 27.4 25.5 25.5 18.5 31.5 DAY 16 21 27 29 30 11 3 4 2 2 19 4 24 HOUR MAXIMUM PRECIPITATION IN MM. 20.0 27.5 13.3 28.5 17.2 25.5 4.0 40.8 36.3 33.5 50.0 30.7 50.0 DAY 19 26 7 9 1 17 9 6 16 7 11 25 MONTHLY TOTAL PRECIPITATION IN MM. 88.5 54.4 61.0 143.8 22.1 50.5 13.3 118.5 102.4 139.3 124.0 125.0 1042.8 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 19.6 20.8 22.5 37.2 NO. OF DAYS WITH PRECIPITATION. 9 8 11 14 5 10 7 12 14 10 5 11 116 NO. OF DAYS PRECIPITATION EQUAL 9 7 10 14 4 10 6 10 13 9 5 11 108 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 5 2 3 6 1 1 0 3 4 5 3 5 38 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 81 93 96 91 87 88 86 88 90 87 80 83 88 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 64 78 88 77 69 69 68 72 77 72 67 67 72 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 83 89 94 86 81 79 78 83 89 87 81 87 85 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 3 0 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 11 19 13 3 0 0 0 46 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 0 7 6 1 0 0 0 0 14 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 1 0 0 0 0 0 0 0 0 0 4 29 DATE OF START AND END FREEZING START = 26 DEC. END = 1 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 6.1 8.1 8.7 12.1 18.6 23.2 24.9 24.8 22.0 16.8 14.0 11.6 15.9 AVERAGE OF MINIMUM TEMPERATURE IN C. 3.0 3.6 5.4 8.9 14.4 19.3 21.1 21.2 18.2 13.5 9.3 6.9 12.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.3 12.5 11.9 15.3 22.8 27.1 28.8 28.4 25.9 20.1 18.6 16.4 19.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 6.3 8.9 6.5 6.4 8.4 7.8 7.7 7.2 7.7 6.6 9.3 9.5 7.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.30 4.52 5.64 7.02 10.22 13.53 14.63 15.06 12.64 9.68 7.06 5.52 9.15 MEAN OF MIXING RATIO AT 09 GMT. 4.97 5.78 6.50 8.28 11.77 14.83 16.53 17.23 14.18 10.98 9.05 6.93 10.59 MEAN OF MIXING RATIO AT 15 GMT. 5.26 5.62 6.35 7.87 11.25 15.05 16.69 17.17 13.96 10.91 8.67 6.90 10.48 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -0.5 0.0 0.0 3.0 9.8 16.0 18.8 18.5 11.8 7.5 4.5 0.5 -0.5 DAY 6 4 13 10 5 27 7 9 22 30 11 23 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 13.4 18.6 20.0 29.5 32.5 31.5 33.0 31.6 30.5 27.2 24.6 25.5 33.0 DAY 8 23 31 28 16 8 17 4 24 8 16 14 24 HOUR MAXIMUM PRECIPITATION IN MM. 36.2 19.6 34.0 14.6 27.5 25.5 14.5 56.5 86.0 52.0 59.0 30.0 86.0 DAY 24 13 13 20 4 28 22 8 19 4 10 29 MONTHLY TOTAL PRECIPITATION IN MM. 88.2 36.3 100.2 66.7 49.9 56.3 48.4 82.4 142.9 225.6 127.0 82.3 1106.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 20.3 15.6 24.7 39.3 NO. OF DAYS WITH PRECIPITATION. 13 6 13 13 10 10 9 6 11 21 7 8 127 NO. OF DAYS PRECIPITATION EQUAL 12 6 12 10 6 8 6 5 11 20 7 8 111 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 1 3 1 2 2 2 3 3 7 3 3 32 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 86 84 92 91 91 89 87 90 89 93 89 82 89 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 72 70 80 83 73 70 70 75 72 79 73 66 74 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 88 85 90 89 86 83 82 84 85 91 91 85 87 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 4 15 17 4 0 0 0 40 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 1 2 9 9 1 0 0 0 22 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. 2 1 1 0 0 0 0 0 0 0 0 0 4 DATE OF START AND END FREEZING START = 6 JAN. END = 13 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 11.3 9.7 11.7 15.7 18.0 23.1 25.8 26.5 21.9 17.5 14.6 11.8 17.3 AVERAGE OF MINIMUM TEMPERATURE IN C. 6.8 6.1 8.6 11.4 13.9 19.0 20.9 22.0 18.3 14.0 10.1 7.3 13.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 15.9 13.3 14.9 20.0 22.1 27.2 30.7 31.0 25.4 21.0 19.0 16.3 21.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.1 7.2 6.3 8.6 8.2 8.2 9.8 9.0 7.1 7.0 8.9 9.0 8.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 5.78 5.78 6.71 8.25 9.88 13.44 14.31 15.51 12.81 9.90 7.50 6.10 9.66 MEAN OF MIXING RATIO AT 09 GMT. 7.14 6.82 7.24 9.49 10.63 15.09 16.63 18.24 14.98 11.42 9.47 8.16 11.28 MEAN OF MIXING RATIO AT 15 GMT. 7.02 6.90 7.27 9.15 10.97 14.44 16.73 18.57 14.81 11.33 9.45 7.47 11.18 ABSOLUTE OF MINIMUM TEMPERATURE IN C. 2.5 2.0 2.0 5.5 9.5 16.0 16.5 19.8 15.5 9.0 5.2 3.8 2.0 DAY 16 8 3 5 9 23 8 29 27 18 30 24 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 24.5 20.0 29.2 25.8 27.5 32.6 33.4 33.6 29.5 25.5 23.6 23.0 33.6 DAY 7 26 28 17 30 5 28 2 10 6 1 17 24 HOUR MAXIMUM PRECIPITATION IN MM. 21.5 30.5 19.5 19.0 23.5 26.5 6.8 107.0 204.0 134.0 38.5 4.8 204.0 DAY 31 6 14 24 5 22 6 31 21 16 6 27 MONTHLY TOTAL PRECIPITATION IN MM. 38.5 97.4 78.8 55.6 59.9 55.7 13.3 184.9 298.0 298.8 73.0 19.7 1273.6 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 16.9 13.4 39.0 30.7 NO. OF DAYS WITH PRECIPITATION. 7 11 10 10 8 6 4 7 13 16 4 8 104 NO. OF DAYS PRECIPITATION EQUAL 6 9 9 9 6 6 4 6 13 16 4 7 95 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 2 3 2 3 3 0 4 6 6 2 0 32 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 85 92 91 88 90 89 86 88 91 93 90 87 89 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 70 76 75 72 69 70 63 68 80 78 71 75 72 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 87 91 88 82 85 81 76 84 91 91 91 90 86 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 3 20 27 2 0 0 0 52 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 0 7 24 26 0 0 0 0 57 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. 0 0 0 0 0 0 0 0 0 0 0 0 0 DATE OF START AND END FREEZING START = ** **** END = ** **** IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 9.4 6.1 9.0 13.0 19.3 21.3 24.2 25.2 21.2 17.8 14.4 9.7 15.9 AVERAGE OF MINIMUM TEMPERATURE IN C. 3.9 2.3 5.3 8.9 14.6 16.5 19.9 20.5 17.8 13.8 10.6 4.8 11.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 14.8 9.8 12.8 17.1 24.1 26.1 28.4 30.0 24.5 21.8 18.3 14.7 20.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.9 7.5 7.5 8.2 9.5 9.6 8.5 9.5 6.7 8.0 7.7 9.9 8.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.64 4.39 5.49 7.03 10.03 11.26 13.34 14.16 12.47 9.53 7.97 5.20 8.79 MEAN OF MIXING RATIO AT 09 GMT. 6.55 5.05 6.48 7.58 11.78 12.97 14.79 16.49 14.11 11.76 9.53 6.72 10.32 MEAN OF MIXING RATIO AT 15 GMT. 6.54 5.10 6.18 7.68 11.60 12.97 14.75 16.64 14.03 11.41 9.20 6.51 10.22 ABSOLUTE OF MINIMUM TEMPERATURE IN C. 0.0 -3.5 -0.8 0.5 11.0 9.5 16.8 17.5 12.5 8.8 2.5 -1.0 -3.5 DAY 28 4 2 2 2 6 2 23 26 24 28 25 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 26.5 19.5 21.0 25.2 29.5 31.5 31.5 32.0 30.5 30.6 22.6 22.6 32.0 DAY 15 23 17 20 23 3 16 6 5 11 1 7 24 HOUR MAXIMUM PRECIPITATION IN MM. 22.8 73.4 40.2 8.8 22.0 66.5 12.3 3.2 85.0 70.5 90.0 54.0 90.0 DAY 22 14 8 9 15 5 25 13 11 13 16 16 MONTHLY TOTAL PRECIPITATION IN MM. 50.1 197.1 151.5 33.6 38.1 67.9 25.1 11.6 272.7 180.8 145.8 101.9 1276.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 31.2 10.9 24.2 33.6 NO. OF DAYS WITH PRECIPITATION. 6 12 15 14 8 3 6 5 16 10 11 8 114 NO. OF DAYS PRECIPITATION EQUAL 6 11 14 12 5 2 5 5 16 10 10 8 104 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 6 6 0 1 1 1 0 7 5 2 3 34 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 84 90 88 87 91 87 86 87 91 91 91 87 88 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 67 73 76 68 66 65 64 65 78 76 75 71 70 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 87 88 86 85 83 80 76 79 88 89 89 87 85 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 7 15 4 0 0 0 26 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 0 1 8 21 2 1 0 0 33 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. 1 4 2 0 0 0 0 0 0 0 0 2 9 DATE OF START AND END FREEZING START = 25 DEC. END = 2 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 8.8 7.3 9.2 12.1 19.9 20.9 23.9 24.6 23.0 18.7 13.6 9.8 16.0 AVERAGE OF MINIMUM TEMPERATURE IN C. 3.9 3.4 5.4 8.6 14.9 16.7 19.2 20.7 18.0 15.2 10.3 6.5 11.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.7 11.3 13.0 15.7 25.0 25.0 28.6 28.5 28.0 22.2 17.0 13.1 20.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.8 7.9 7.6 7.1 10.1 8.3 9.4 7.8 10.0 7.0 6.7 6.6 8.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.38 4.66 5.52 7.09 10.26 11.87 13.37 14.78 12.10 10.91 7.89 5.98 9.07 MEAN OF MIXING RATIO AT 09 GMT. 5.79 5.59 6.01 8.11 12.25 13.39 15.93 16.66 15.31 12.99 9.35 7.07 10.70 MEAN OF MIXING RATIO AT 15 GMT. 5.31 5.60 6.30 7.90 11.88 12.68 16.21 16.73 15.13 12.64 9.27 7.02 10.56 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -1.0 -1.8 0.5 4.8 8.0 12.0 13.4 18.2 15.0 7.4 6.0 2.8 -1.8 DAY 24 8 24 1 1 8 13 15 8 28 24 24 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 25.0 22.5 25.6 23.0 30.5 29.0 33.4 31.0 33.8 25.5 20.2 21.5 33.8 DAY 13 27 13 14 20 27 20 15 27 17 9 27 24 HOUR MAXIMUM PRECIPITATION IN MM. 11.5 35.7 43.0 44.5 7.0 30.0 46.5 11.8 14.5 186.5 96.0 14.5 186.5 DAY 30 22 3 4 23 20 12 3 13 27 21 6 MONTHLY TOTAL PRECIPITATION IN MM. 53.5 100.2 121.3 112.4 27.2 100.9 75.0 27.7 47.5 372.0 184.6 75.9 1298.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 21.2 18.5 11.6 48.7 NO. OF DAYS WITH PRECIPITATION. 8 11 15 13 8 11 6 10 7 15 13 10 127 NO. OF DAYS PRECIPITATION EQUAL 7 11 14 11 8 11 6 9 7 13 11 9 117 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 4 4 4 0 3 2 1 3 5 4 3 36 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 81 88 92 95 88 92 89 91 87 94 95 92 90 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 64 71 69 77 64 72 68 72 68 81 80 79 72 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 78 87 87 87 80 79 83 86 82 92 93 90 85 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 1 8 14 4 0 0 0 27 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 1 0 14 9 6 0 0 0 30 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. 4 7 0 0 0 0 0 0 0 0 0 0 11 DATE OF START AND END FREEZING START = 23 JAN. END = 25 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 4.0 3.4 6.8 11.3 17.1 22.3 23.0 24.0 20.9 17.0 11.0 10.8 14.3 AVERAGE OF MINIMUM TEMPERATURE IN C. 0.8 0.2 4.8 7.9 12.9 16.9 18.7 19.4 16.7 13.7 6.2 7.0 10.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.3 6.6 8.8 14.6 21.4 27.7 27.2 28.6 25.1 20.4 15.7 14.6 18.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 6.5 6.4 4.0 6.7 8.5 10.8 8.5 9.2 8.4 6.7 9.5 7.6 7.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.10 3.82 5.42 6.49 9.14 11.69 12.62 13.56 11.41 9.87 5.89 6.01 8.33 MEAN OF MIXING RATIO AT 09 GMT. 4.84 4.45 5.81 7.25 10.67 14.75 14.88 16.58 14.14 11.52 7.93 7.29 10.01 MEAN OF MIXING RATIO AT 15 GMT. 4.67 4.52 5.68 7.21 10.47 14.23 14.69 16.31 14.05 11.33 7.86 7.20 9.85 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -7.5 -4.5 0.0 3.5 8.5 11.0 15.8 15.5 12.0 6.0 1.5 2.5 -7.5 DAY 7 17 24 15 9 1 9 31 13 31 19 17 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 11.6 11.6 15.4 23.5 30.4 32.0 33.6 31.5 31.8 26.2 23.2 21.5 33.6 DAY 1 6 31 17 23 24 14 20 7 7 7 18 24 HOUR MAXIMUM PRECIPITATION IN MM. 54.0 31.0 29.0 13.0 29.5 21.5 44.5 6.5 87.5 88.0 33.0 15.0 88.0 DAY 6 11 23 6 27 25 31 7 25 26 14 7 MONTHLY TOTAL PRECIPITATION IN MM. 270.1 123.0 136.1 61.5 75.8 56.5 76.3 15.2 261.7 342.7 111.7 55.7 1586.3 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 33.4 12.2 22.3 32.2 NO. OF DAYS WITH PRECIPITATION. 15 14 18 15 13 5 9 5 10 17 11 7 139 NO. OF DAYS PRECIPITATION EQUAL 14 13 16 14 9 5 8 5 9 16 11 6 126 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 7 5 5 2 3 2 1 0 7 5 4 3 44 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 91 92 97 92 92 89 87 89 89 93 91 88 91 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 79 78 86 75 72 67 69 71 74 79 75 74 75 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 91 90 92 86 84 77 80 81 86 91 89 90 86 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 2 1 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 1 5 5 1 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 1 11 5 10 7 0 0 0 34 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 13 2 0 0 0 0 0 0 0 0 0 29 DATE OF START AND END FREEZING START = 4 JAN. END = 25 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 7.9 9.6 10.8 14.6 19.8 21.7 24.8 25.1 21.1 17.6 14.8 8.9 16.4 AVERAGE OF MINIMUM TEMPERATURE IN C. 4.2 5.1 7.3 10.3 14.7 17.2 19.8 21.2 17.3 13.9 10.5 5.1 12.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.5 14.2 14.3 18.9 24.9 26.1 29.7 29.1 24.8 21.4 19.1 12.7 20.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 7.3 9.1 7.0 8.6 10.2 8.9 9.9 7.9 7.5 7.5 8.6 7.6 8.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 5.19 5.49 5.99 7.62 10.41 12.35 13.65 15.37 12.28 9.73 7.97 5.48 9.29 MEAN OF MIXING RATIO AT 09 GMT. 6.27 6.67 7.21 9.26 12.58 13.66 15.80 17.16 14.37 11.66 9.99 6.77 10.95 MEAN OF MIXING RATIO AT 15 GMT. 6.03 6.52 6.93 8.79 12.24 13.50 15.83 16.91 13.97 10.93 9.54 6.58 10.65 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -1.0 1.5 3.0 6.0 9.5 12.5 16.5 17.2 12.5 8.0 7.0 1.0 -1.0 DAY 29 7 17 26 9 11 19 20 13 26 25 31 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.0 21.0 26.0 27.0 31.0 30.0 33.5 32.5 29.5 27.5 24.5 20.0 33.5 DAY 18 8 30 19 13 30 14 27 7 1 3 6 24 HOUR MAXIMUM PRECIPITATION IN MM. 83.0 15.5 30.0 34.8 10.0 53.6 27.5 53.5 114.0 73.0 120.0 45.0 120.0 DAY 1 20 24 21 22 10 24 29 9 18 13 8 MONTHLY TOTAL PRECIPITATION IN MM. 182.8 45.5 83.3 64.4 25.4 69.7 59.7 90.6 198.4 162.8 179.3 187.0 1348.9 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 23.1 11.8 25.9 39.2 NO. OF DAYS WITH PRECIPITATION. 12 7 12 9 6 7 8 7 8 12 9 11 108 NO. OF DAYS PRECIPITATION EQUAL 12 7 12 9 4 7 6 5 7 12 8 11 100 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 5 1 2 1 1 1 2 2 4 5 4 5 33 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 92 89 89 90 88 89 87 91 92 90 92 91 90 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 78 74 75 73 69 68 64 71 77 77 76 77 73 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 90 86 86 87 82 79 79 83 89 90 92 92 86 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 1 9 19 0 0 0 0 29 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 4 1 20 15 0 0 0 0 40 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. 1 0 0 0 0 0 0 0 0 0 0 0 1 DATE OF START AND END FREEZING START = 29 JAN. END = 29 JAN. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 7.1 7.4 9.5 13.1 20.0 21.8 26.0 25.1 24.0 17.9 14.5 9.7 16.3 AVERAGE OF MINIMUM TEMPERATURE IN C. 3.0 3.0 5.8 9.2 15.3 16.5 20.8 20.0 17.8 12.6 9.3 4.7 11.5 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.3 11.9 13.1 17.0 24.8 27.1 31.3 30.1 30.2 23.2 19.7 14.6 21.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.3 8.9 7.3 7.8 9.5 10.6 10.5 10.1 12.4 10.6 10.4 9.9 9.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.41 4.67 5.67 7.36 11.01 11.60 14.46 14.50 12.04 9.09 7.21 5.43 8.95 MEAN OF MIXING RATIO AT 09 GMT. 5.67 5.41 6.94 8.71 12.77 13.84 16.54 15.84 17.09 12.39 9.98 7.29 11.04 MEAN OF MIXING RATIO AT 15 GMT. 5.42 5.57 6.49 8.10 11.84 13.13 16.73 15.96 15.69 11.86 9.52 6.80 10.59 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -0.2 -1.0 2.5 3.0 12.0 11.5 18.0 17.0 15.0 9.5 5.0 0.5 -1.0 DAY 25 3 1 3 15 20 7 10 18 10 21 22 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.4 23.5 20.0 26.0 28.0 31.5 34.2 34.0 32.5 29.5 24.5 23.5 34.2 DAY 2 27 28 15 5 13 22 15 4 7 15 13 24 HOUR MAXIMUM PRECIPITATION IN MM. 52.0 25.5 24.5 36.0 5.0 33.0 2.0 7.5 1.5 54.5 3.5 20.0 54.5 DAY 14 13 15 2 3 19 16 23 30 1 10 16 MONTHLY TOTAL PRECIPITATION IN MM. 140.3 97.0 97.0 151.7 14.2 55.5 2.0 16.5 1.5 116.0 7.0 72.0 770.7 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 43.4 28.7 2.6 25.3 NO. OF DAYS WITH PRECIPITATION. 9 10 10 16 7 4 1 6 1 6 3 10 83 NO. OF DAYS PRECIPITATION EQUAL 7 9 10 15 4 3 1 6 1 6 3 8 73 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 5 4 6 0 2 0 0 0 4 0 3 27 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 86 91 93 92 92 88 85 85 82 90 89 88 88 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 72 69 80 79 69 66 60 63 67 73 74 74 71 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 85 88 88 89 83 77 79 80 81 88 87 87 84 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 15 5 0 0 0 0 20 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 0 5 23 20 18 0 0 0 66 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. 3 8 0 0 0 0 0 0 0 0 0 0 11 DATE OF START AND END FREEZING START = 16 JAN. END = 19 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 3.2 2.5 6.3 15.4 18.4 24.1 26.8 25.0 23.6 20.0 13.3 6.6 15.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.7 -2.2 2.4 9.6 13.7 19.5 22.4 20.0 19.7 15.3 7.9 3.0 10.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.2 7.1 10.2 21.2 23.1 28.6 31.1 30.0 27.5 24.8 18.6 10.2 20.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 7.9 9.3 7.8 11.6 9.4 9.1 8.7 10.0 7.8 9.5 10.7 7.2 9.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.75 3.23 4.53 7.67 9.72 14.11 16.27 13.38 13.41 11.41 6.77 4.66 9.08 MEAN OF MIXING RATIO AT 09 GMT. 4.54 4.03 5.39 9.40 11.26 16.23 17.45 16.21 15.47 14.06 9.17 5.67 10.74 MEAN OF MIXING RATIO AT 15 GMT. 4.47 4.12 5.25 8.70 10.43 15.55 17.61 15.82 15.36 13.62 8.45 5.40 10.40 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -7.5 -8.0 -1.0 4.5 10.0 17.0 20.0 15.5 15.5 10.0 5.5 -3.0 -8.0 DAY 25 2 10 3 8 1 28 29 19 24 14 24 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.0 12.0 20.5 30.5 29.5 31.0 34.0 32.8 32.0 28.8 25.0 14.5 34.0 DAY 13 27 26 28 2 20 12 16 3 6 27 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 48.0 50.0 36.5 17.5 18.5 24.0 14.5 65.0 66.0 165.0 39.0 70.0 165.0 DAY 19 1 19 4 7 26 31 1 7 8 5 31 MONTHLY TOTAL PRECIPITATION IN MM. 196.2 144.0 123.0 27.0 73.5 74.0 18.0 75.0 78.0 307.0 163.0 280.0 1558.7 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 29.7 11.2 11.0 48.1 NO. OF DAYS WITH PRECIPITATION. 16 8 16 4 11 6 3 3 8 8 10 13 106 NO. OF DAYS PRECIPITATION EQUAL 15 8 15 4 11 6 3 3 6 8 10 13 102 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 7 5 3 1 2 4 1 1 1 6 6 8 45 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 90 90 92 91 88 88 85 83 86 91 90 88 89 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 78 69 76 62 67 69 63 63 70 75 75 77 70 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 91 87 88 77 83 82 79 76 85 89 89 87 84 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 7 10 0 0 0 0 0 0 0 0 0 0 17 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 5 29 16 9 1 0 0 60 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 0 11 25 20 5 0 0 0 63 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. 19 21 6 0 0 0 0 0 0 0 0 10 56 DATE OF START AND END FREEZING START = 22 DEC. END = 29 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 4.3 8.4 9.1 13.8 18.5 21.4 24.7 25.3 20.5 18.3 12.4 8.0 15.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.2 3.3 5.1 9.3 13.8 17.4 20.0 21.4 17.1 14.2 7.1 2.8 10.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.8 13.6 13.1 18.3 23.1 25.4 29.5 29.3 24.0 22.3 17.8 13.1 19.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.0 10.3 8.0 9.0 9.3 8.0 9.5 7.9 6.9 8.1 10.7 10.3 8.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.63 4.68 5.66 7.22 10.23 12.46 13.99 15.87 12.47 10.40 6.47 4.80 8.99 MEAN OF MIXING RATIO AT 09 GMT. 4.80 5.93 6.47 8.24 12.36 15.12 16.36 18.15 15.12 13.17 8.70 6.47 10.91 MEAN OF MIXING RATIO AT 15 GMT. 4.65 5.82 6.22 7.99 11.34 13.67 15.97 17.37 13.85 12.00 8.11 5.98 10.25 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -6.0 -1.5 -0.8 6.0 9.5 13.0 16.5 18.0 9.0 7.0 2.0 -0.8 -6.0 DAY 25 7 10 13 6 10 3 30 27 31 9 15 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 13.0 23.0 25.5 27.0 27.0 30.5 34.8 32.8 28.5 27.4 26.5 20.0 34.8 DAY 12 19 2 18 17 16 27 5 5 19 1 16 24 HOUR MAXIMUM PRECIPITATION IN MM. 16.0 27.0 26.0 6.5 18.0 16.0 10.0 43.5 150.0 30.5 12.0 35.0 150.0 DAY 24 6 8 24 3 23 22 29 26 27 19 12 MONTHLY TOTAL PRECIPITATION IN MM. 42.0 57.0 136.3 22.0 46.0 57.5 11.5 123.5 277.0 69.5 45.0 131.5 1018.8 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 23.1 12.3 40.4 24.1 NO. OF DAYS WITH PRECIPITATION. 7 8 16 8 5 9 2 9 11 9 10 12 106 NO. OF DAYS PRECIPITATION EQUAL 7 8 14 7 5 8 2 9 11 9 9 12 101 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 2 6 0 3 2 1 4 4 2 1 5 32 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 86 89 93 87 92 89 86 91 94 92 89 89 90 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 72 67 75 67 73 76 67 75 85 83 72 75 74 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 89 85 88 82 84 85 83 87 92 88 88 89 87 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 11 22 0 0 0 0 33 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 0 2 14 17 0 0 0 0 33 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 2 1 0 0 0 0 0 0 0 0 3 24 DATE OF START AND END FREEZING START = 15 DEC. END = 10 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 5.6 5.4 8.2 12.2 19.3 23.0 23.0 23.7 21.3 18.6 14.8 9.1 15.3 AVERAGE OF MINIMUM TEMPERATURE IN C. 1.8 1.6 4.7 7.9 14.7 18.0 19.2 19.9 17.4 11.9 10.2 4.0 10.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.4 9.1 11.8 16.4 24.0 28.0 26.9 27.6 25.1 25.3 19.3 14.2 19.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 7.6 7.5 7.1 8.5 9.3 10.0 7.7 7.7 7.7 13.4 9.1 10.2 8.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.26 4.25 5.51 6.90 10.68 13.16 14.20 14.58 12.40 8.16 7.81 4.72 8.88 MEAN OF MIXING RATIO AT 09 GMT. 5.27 5.36 6.23 8.78 12.97 16.44 17.28 17.27 15.35 12.91 10.86 7.41 11.34 MEAN OF MIXING RATIO AT 15 GMT. 4.97 5.08 5.87 7.71 12.10 14.45 15.99 15.91 14.34 10.75 9.41 6.44 10.25 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -0.8 -2.5 -1.0 2.5 9.0 13.8 16.5 17.5 13.0 8.0 5.0 0.0 -2.5 DAY 19 2 7 13 2 9 9 25 25 20 29 30 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.5 16.5 23.5 28.5 29.0 31.5 31.5 31.5 29.0 31.0 26.5 18.0 31.5 DAY 21 10 18 16 13 24 25 22 8 28 3 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 21.0 17.0 21.5 17.0 6.0 19.0 77.0 11.5 15.0 3.0 29.0 25.0 77.0 DAY 31 1 4 11 1 28 5 2 21 4 16 23 MONTHLY TOTAL PRECIPITATION IN MM. 78.0 74.0 78.0 80.0 17.3 39.0 250.2 54.4 80.0 3.0 80.0 63.0 896.9 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 25.6 15.2 42.9 16.3 NO. OF DAYS WITH PRECIPITATION. 14 12 12 13 5 5 17 12 12 1 7 7 117 NO. OF DAYS PRECIPITATION EQUAL 11 12 10 13 4 5 17 11 12 1 7 7 110 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 3 3 2 0 1 7 1 3 0 4 2 29 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 90 92 92 93 92 89 93 92 91 82 90 83 90 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 78 80 76 79 73 72 82 78 80 67 81 77 77 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 87 90 85 86 88 82 91 89 90 85 88 88 87 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 2 5 8 1 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 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 9 7 12 0 2 0 0 30 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 7 3 0 0 0 0 0 0 0 0 1 20 DATE OF START AND END FREEZING START = 30 DEC. END = 12 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 7.3 7.0 9.7 15.3 20.4 24.1 26.3 24.4 22.2 ***** ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. 2.2 3.2 4.6 9.4 15.7 18.7 21.0 19.7 18.6 ***** ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.4 10.7 14.8 21.3 25.2 29.4 31.6 29.0 25.7 ***** ***** ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.2 7.5 10.2 11.9 9.5 10.7 10.6 9.3 7.1 ***** ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.36 4.81 5.26 7.42 11.48 14.50 16.14 14.64 13.48 ***** ***** ***** ***** MEAN OF MIXING RATIO AT 09 GMT. 6.30 5.93 6.69 10.68 14.44 17.32 18.26 17.18 15.90 ***** ***** ***** ***** MEAN OF MIXING RATIO AT 15 GMT. 5.55 5.35 6.24 9.02 12.91 16.37 17.78 16.79 15.37 ***** ***** ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -1.5 0.0 0.0 3.5 12.5 16.5 19.5 15.0 15.5 ***** ***** ***** ****** DAY 15 12 9 3 2 8 8 18 24 ** ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.0 16.4 27.0 27.5 31.0 33.0 33.6 33.0 31.5 ***** ***** ***** ****** DAY 10 16 23 28 31 28 27 5 7 ** ** ** 24 HOUR MAXIMUM PRECIPITATION IN MM. 34.0 30.0 45.0 15.0 8.5 21.0 0.0 113.0 84.0 ***** ***** ***** ****** DAY 14 11 16 23 6 14 ** 16 14 ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. 48.6 92.7 140.0 38.0 38.5 36.0 0.0 130.0 224.0 ***** ***** ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 37.6 15.0 47.3 ***** NO. OF DAYS WITH PRECIPITATION. 8 11 12 7 11 4 0 5 12 *** *** *** *** NO. OF DAYS PRECIPITATION EQUAL 7 11 11 7 11 4 0 5 12 *** *** *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 4 6 2 0 1 0 2 6 *** *** *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 87 91 88 88 88 85 85 86 91 *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 75 81 72 72 76 71 65 71 81 *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 88 88 86 81 84 80 76 83 90 *** *** *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 *** *** *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 4 18 12 2 *** *** *** *** 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 2 18 30 13 7 *** *** *** *** 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. 5 3 1 0 0 0 0 0 0 *** *** *** *** DATE OF START AND END FREEZING START = 13 JAN. END = 9 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 5.1 6.6 14.1 18.0 21.5 ***** 24.8 27.8 22.5 16.4 12.1 8.4 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. 1.7 2.8 8.9 14.1 17.2 ***** 20.4 21.0 19.3 12.5 7.6 4.1 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.5 10.4 19.4 21.9 25.8 ***** 29.1 34.5 25.6 20.4 16.5 12.7 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 6.8 7.6 10.5 7.8 8.6 ***** 8.7 13.5 6.3 7.9 8.9 8.6 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.22 4.63 7.37 10.41 12.64 ***** 14.30 13.87 12.69 8.48 5.70 4.45 ***** MEAN OF MIXING RATIO AT 09 GMT. 5.14 5.75 9.68 12.67 15.59 ***** 17.30 18.18 16.82 11.16 8.22 6.72 ***** MEAN OF MIXING RATIO AT 15 GMT. 4.49 5.19 7.95 10.46 13.64 ***** 14.18 16.90 13.55 9.47 6.18 5.06 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. 0.0 0.0 2.0 9.0 15.0 ***** 17.0 19.1 16.0 6.1 4.1 1.0 ****** DAY 27 1 5 7 9 ** 6 30 30 31 1 25 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.0 17.0 30.0 30.0 31.2 ***** 35.0 38.0 31.0 27.1 24.1 22.1 ****** DAY 1 3 14 20 10 ** 30 8 20 2 26 4 24 HOUR MAXIMUM PRECIPITATION IN MM. 16.0 44.5 18.0 10.0 26.0 ***** 9.0 5.5 35.0 188.0 45.5 23.0 ****** DAY 10 16 22 25 7 ** 5 12 23 30 10 31 MONTHLY TOTAL PRECIPITATION IN MM. 55.5 99.5 63.0 20.5 58.0 ***** 23.0 7.0 146.0 881.0 157.0 90.5 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 13.6 4.9 11.0 70.5 NO. OF DAYS WITH PRECIPITATION. 7 8 11 5 11 *** 6 2 15 12 9 11 *** NO. OF DAYS PRECIPITATION EQUAL 7 8 11 5 11 *** 6 2 15 12 9 11 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 4 3 1 1 *** 0 0 5 9 4 2 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 92 91 87 90 88 *** 86 81 87 85 82 81 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 81 80 74 80 77 *** 73 60 84 77 73 76 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 85 86 79 83 82 *** 80 82 84 82 77 77 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 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 *** 14 18 8 0 0 0 *** 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 1 1 1 *** 14 30 2 0 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. 3 5 0 0 0 *** 0 0 0 0 0 0 *** DATE OF START AND END FREEZING START = 27 JAN. END = 10 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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.***** 6.4 9.4 14.0 18.3 23.1 24.3 24.0 19.2 15.0 15.3 8.5 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** 2.5 6.6 10.4 14.5 19.2 20.6 20.3 15.4 11.1 11.7 5.1 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** 10.2 12.3 17.5 22.0 26.9 27.9 27.7 23.0 19.0 19.0 11.8 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** 7.7 5.7 7.1 7.5 7.7 7.3 7.4 7.6 7.9 7.3 6.7 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** 4.29 5.73 7.03 10.18 13.25 13.80 14.38 10.71 8.39 8.34 5.09 ***** MEAN OF MIXING RATIO AT 09 GMT. ***** 5.95 7.05 8.87 11.49 16.09 16.27 17.06 13.10 10.67 10.51 6.60 ***** MEAN OF MIXING RATIO AT 15 GMT. ***** 4.89 5.98 7.64 9.93 13.64 14.83 15.96 11.71 9.63 9.48 5.85 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** 0.0 3.0 7.0 12.0 16.1 18.1 16.5 5.0 4.2 3.5 -1.5 ****** DAY ** 4 15 17 1 1 31 30 24 19 25 26 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** 17.1 17.1 26.0 27.1 31.1 32.0 31.5 29.0 30.0 25.5 20.5 ****** DAY ** 14 20 13 14 7 9 10 12 26 4 5 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** 13.0 9.0 16.0 19.5 31.0 31.5 65.5 135.0 76.0 85.0 57.0 ****** DAY ** 7 4 21 21 27 29 19 30 6 12 7 MONTHLY TOTAL PRECIPITATION IN MM. ***** 23.5 34.0 26.0 68.0 51.5 119.5 134.5 248.0 247.0 201.5 136.0 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 4.5 11.3 38.9 45.3 NO. OF DAYS WITH PRECIPITATION. *** 3 8 5 14 5 6 10 8 16 9 13 *** NO. OF DAYS PRECIPITATION EQUAL *** 3 8 5 13 5 6 10 8 16 9 13 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** 1 0 1 2 2 4 3 3 5 4 4 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** 88 90 87 91 85 83 89 86 88 88 86 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** 78 82 73 71 74 70 75 74 79 79 79 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** 84 88 80 79 77 75 80 78 86 87 86 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** 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 9 17 17 1 1 0 0 *** 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 4 8 12 0 1 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. *** 1 0 0 0 0 0 0 0 0 0 4 *** DATE OF START AND END FREEZING START = 26 DEC. END = 4 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 7.4 7.5 9.5 14.0 16.1 19.8 24.2 24.3 22.8 18.7 10.1 10.6 15.4 AVERAGE OF MINIMUM TEMPERATURE IN C. 3.5 4.4 5.8 9.6 12.8 16.1 19.4 20.4 18.3 15.0 5.6 6.2 11.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.2 10.6 13.1 18.4 19.4 23.6 29.0 28.2 27.3 22.4 14.6 15.0 19.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 7.7 6.2 7.3 8.8 6.6 7.5 9.6 7.8 9.0 7.4 9.0 8.8 8.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.42 4.82 5.77 7.46 9.35 11.62 14.56 15.18 13.32 10.80 5.56 5.87 9.06 MEAN OF MIXING RATIO AT 09 GMT. 5.90 6.05 7.48 9.69 10.71 13.88 17.28 17.30 16.99 13.01 7.07 7.37 11.06 MEAN OF MIXING RATIO AT 15 GMT. 5.34 5.65 6.60 8.28 9.77 12.01 15.44 15.41 15.01 11.43 6.29 6.34 9.80 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -3.0 1.0 1.0 4.2 6.4 9.2 15.5 16.5 14.5 11.5 2.0 -1.0 -3.0 DAY 16 14 8 16 4 3 8 28 27 7 26 25 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.5 18.5 17.5 34.0 26.5 28.5 33.2 32.0 34.0 32.4 18.5 26.0 34.0 DAY 2 16 26 6 14 17 12 13 9 23 1 16 24 HOUR MAXIMUM PRECIPITATION IN MM. 31.0 22.0 36.0 9.5 38.0 62.0 6.0 20.0 165.0 84.0 170.0 36.0 170.0 DAY 10 22 13 11 23 2 1 15 26 25 2 20 MONTHLY TOTAL PRECIPITATION IN MM. 55.0 68.0 76.5 18.0 108.5 125.5 10.0 38.0 195.0 217.0 316.0 129.0 1356.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 14.7 18.6 17.9 48.8 NO. OF DAYS WITH PRECIPITATION. 7 9 8 6 12 7 3 5 6 10 11 8 92 NO. OF DAYS PRECIPITATION EQUAL 7 9 6 5 11 7 3 5 6 10 11 8 88 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 3 2 0 3 3 0 2 3 4 7 5 34 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 84 89 95 94 92 90 91 91 86 91 87 88 90 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 76 80 82 76 80 79 71 74 77 80 72 73 77 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 85 88 87 80 86 79 74 77 82 85 83 85 83 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 6 13 1 0 0 0 20 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 0 0 15 6 4 1 0 0 28 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. 2 0 0 0 0 0 0 0 0 0 0 2 4 DATE OF START AND END FREEZING START = 24 DEC. END = 16 JAN. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 7.2 8.2 9.6 13.5 17.9 21.2 25.2 24.9 23.1 19.1 14.3 10.8 16.2 AVERAGE OF MINIMUM TEMPERATURE IN C. 3.2 4.6 5.6 10.0 13.4 17.3 21.3 19.5 18.6 15.2 10.0 5.5 12.0 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.3 11.8 13.7 16.9 22.4 25.1 29.1 30.4 27.6 22.9 18.6 16.0 20.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.1 7.2 8.1 6.9 9.0 7.8 7.8 10.9 9.0 7.7 8.6 10.5 8.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.67 5.26 5.78 7.88 9.78 12.55 16.02 14.21 13.69 10.93 7.77 5.63 9.51 MEAN OF MIXING RATIO AT 09 GMT. 5.80 6.20 7.18 9.35 11.69 14.57 18.49 18.85 17.16 13.33 9.56 7.67 11.65 MEAN OF MIXING RATIO AT 15 GMT. 5.26 5.28 6.11 8.01 10.29 12.73 16.24 16.89 15.97 12.00 8.39 6.57 10.31 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -2.8 -0.5 -0.2 4.0 6.0 15.0 18.5 17.0 13.2 10.5 4.2 3.0 -2.8 DAY 31 19 2 29 1 12 6 16 28 28 28 12 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 25.5 21.0 22.5 24.0 27.6 30.0 32.2 33.4 33.5 27.5 30.4 19.5 33.5 DAY 4 8 16 10 22 30 24 15 17 4 2 14 24 HOUR MAXIMUM PRECIPITATION IN MM. 26.0 37.0 36.0 20.0 24.5 25.5 20.0 71.0 35.0 41.0 54.0 81.0 81.0 DAY 23 18 27 21 24 4 31 1 20 8 4 16 MONTHLY TOTAL PRECIPITATION IN MM. 114.5 98.0 75.0 75.0 56.0 50.0 53.0 73.0 101.0 83.0 127.0 190.0 1095.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 26.2 16.5 20.7 36.5 NO. OF DAYS WITH PRECIPITATION. 9 8 7 11 7 7 7 2 10 9 8 7 92 NO. OF DAYS PRECIPITATION EQUAL 9 8 7 11 7 7 7 2 10 9 8 7 92 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 5 3 2 3 1 1 2 1 5 2 4 6 35 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 87 91 91 94 88 89 90 86 91 92 93 91 90 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 74 75 75 81 72 75 75 71 76 79 75 72 75 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 87 87 86 86 76 76 78 75 84 87 87 87 83 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 23 4 8 0 0 0 35 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 0 1 11 25 9 0 1 0 47 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. 5 1 2 0 0 0 0 0 0 0 0 0 8 DATE OF START AND END FREEZING START = 14 JAN. END = 5 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 5.8 5.4 8.0 13.4 18.0 22.1 26.1 24.6 21.5 16.8 14.3 10.9 15.6 AVERAGE OF MINIMUM TEMPERATURE IN C. 1.5 2.2 5.2 9.7 13.9 17.4 21.1 21.1 17.8 12.7 9.7 5.8 11.5 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.0 8.6 10.9 17.1 22.2 26.8 31.1 28.0 25.1 21.0 18.9 16.0 19.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.5 6.4 5.7 7.4 8.3 9.4 10.0 6.9 7.3 8.3 9.2 10.2 8.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.21 4.48 5.50 7.58 10.26 12.76 15.63 15.85 12.85 9.19 7.48 5.66 9.29 MEAN OF MIXING RATIO AT 09 GMT. 5.24 5.24 6.01 8.88 12.07 15.27 17.97 17.31 14.52 10.66 9.60 7.39 10.85 MEAN OF MIXING RATIO AT 15 GMT. 4.90 4.94 5.64 8.06 10.78 13.31 16.73 16.05 12.82 9.90 8.69 6.81 9.89 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -2.5 -3.8 -0.8 1.5 9.0 11.6 18.5 17.4 10.8 6.5 4.0 2.0 -3.8 DAY 27 1 5 18 18 1 9 30 24 22 26 22 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.8 11.4 20.0 25.5 32.5 35.5 34.0 31.5 30.0 28.0 27.8 28.0 35.5 DAY 28 13 23 22 22 4 26 15 3 3 12 5 24 HOUR MAXIMUM PRECIPITATION IN MM. 26.0 15.0 50.0 16.0 24.0 3.0 15.0 24.0 30.0 125.0 19.0 19.0 125.0 DAY 31 25 15 14 16 16 31 27 14 20 14 26 MONTHLY TOTAL PRECIPITATION IN MM. 111.5 67.0 110.0 50.0 32.5 5.0 15.0 96.0 59.0 251.0 64.0 65.0 926.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 31.2 9.4 18.4 41.0 NO. OF DAYS WITH PRECIPITATION. 11 10 13 6 7 2 1 10 8 14 8 8 98 NO. OF DAYS PRECIPITATION EQUAL 11 10 13 6 7 2 1 10 8 14 8 8 98 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 4 2 2 3 1 0 1 4 2 5 3 2 29 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 92 93 93 92 91 86 88 93 92 91 92 91 91 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 73 79 78 78 76 73 66 76 76 73 75 70 74 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 86 87 86 85 83 74 74 82 80 86 88 87 83 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 17 21 1 0 0 0 39 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 2 4 22 8 1 0 0 0 37 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. 11 9 2 0 0 0 0 0 0 0 0 0 22 DATE OF START AND END FREEZING START = 3 JAN. END = 17 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 9.4 9.0 10.3 12.4 18.1 22.0 25.3 25.4 22.8 18.7 14.1 11.8 16.6 AVERAGE OF MINIMUM TEMPERATURE IN C. 4.0 4.5 6.7 8.7 13.8 17.5 21.0 21.7 18.2 14.0 9.0 6.6 12.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 14.9 13.4 14.0 16.1 22.3 26.4 29.6 29.0 27.5 23.4 19.2 17.1 21.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.9 8.9 7.3 7.4 8.5 8.9 8.6 7.3 9.3 9.4 10.2 10.5 8.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.91 5.16 6.10 7.21 9.83 12.71 15.69 16.31 13.10 9.91 7.09 6.00 9.50 MEAN OF MIXING RATIO AT 09 GMT. 6.63 6.67 7.23 8.21 10.88 14.83 18.12 18.98 15.71 11.97 9.32 7.98 11.38 MEAN OF MIXING RATIO AT 15 GMT. 6.20 6.02 6.56 7.63 10.39 13.60 16.76 17.51 15.00 10.94 8.08 7.21 10.49 ABSOLUTE OF MINIMUM TEMPERATURE IN C. 0.4 0.6 0.0 0.1 9.0 10.8 18.2 19.0 11.5 10.0 5.5 2.4 0.0 DAY 16 4 5 3 18 7 25 26 25 31 7 20 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 22.5 24.0 27.0 25.0 30.0 30.5 31.8 32.0 30.5 29.2 30.6 26.0 32.0 DAY 17 9 21 20 14 27 28 3 2 15 4 18 24 HOUR MAXIMUM PRECIPITATION IN MM. 25.0 25.0 24.0 34.0 56.0 12.0 15.0 37.0 125.0 43.0 25.0 43.0 125.0 DAY 25 11 31 1 16 6 19 6 23 16 6 29 MONTHLY TOTAL PRECIPITATION IN MM. 69.5 70.0 97.5 98.0 100.0 39.0 30.5 83.0 220.0 133.0 65.0 85.0 1090.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 21.7 21.7 30.6 26.0 NO. OF DAYS WITH PRECIPITATION. 6 8 11 12 9 7 5 7 6 10 8 9 98 NO. OF DAYS PRECIPITATION EQUAL 6 8 11 12 9 7 5 7 6 10 8 9 98 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 3 4 3 1 2 1 2 4 4 2 3 32 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 88 91 92 92 89 86 85 91 88 89 90 91 89 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 68 74 78 76 70 73 73 78 71 71 72 70 73 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 86 87 85 86 79 77 78 84 83 85 83 85 83 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 2 16 25 6 0 0 0 49 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 1 2 14 14 5 0 1 0 37 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. 0 0 1 0 0 0 0 0 0 0 0 0 1 DATE OF START AND END FREEZING START = 5 MAR. END = 5 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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.***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 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 KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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.***** ***** ***** 13.8 20.0 22.3 26.3 24.8 21.4 17.1 15.2 9.8 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** 8.0 15.5 18.5 21.6 21.2 17.7 12.2 10.3 4.9 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** 19.6 24.5 26.1 31.0 28.4 25.2 21.9 20.0 14.7 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** 11.6 9.0 7.6 9.4 7.2 7.5 9.7 9.7 9.8 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** ***** 6.94 11.45 13.57 15.84 15.16 12.32 8.61 7.29 5.23 ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** ***** 8.94 13.13 16.48 18.38 17.25 14.63 11.26 9.27 6.68 ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** ***** 8.08 12.24 14.20 17.12 15.90 13.31 10.25 8.78 6.11 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** 2.0 9.5 14.8 16.0 16.5 12.5 8.5 4.6 0.0 ****** DAY ** ** ** 2 1 30 1 28 16 13 27 19 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** 28.4 29.8 29.5 34.5 34.0 28.5 27.5 26.5 26.5 ****** DAY ** ** ** 18 26 18 18 15 8 11 22 29 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** ***** 11.0 22.0 23.0 4.0 12.0 118.0 114.0 78.0 62.0 ****** DAY ** ** ** 25 29 26 31 18 14 12 5 14 MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** ***** 22.0 71.0 88.0 4.0 53.0 167.0 206.0 165.0 246.0 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION ***** 17.7 21.9 60.4 NO. OF DAYS WITH PRECIPITATION. *** *** *** 6 8 11 2 14 10 9 9 11 *** NO. OF DAYS PRECIPITATION EQUAL *** *** *** 6 8 11 1 14 9 9 9 11 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** *** 1 3 4 0 2 2 3 4 6 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** *** 90 88 88 84 89 90 89 86 87 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** *** 68 73 81 69 77 77 73 70 68 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** *** 76 80 79 73 81 82 82 85 87 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** 0 0 0 0 0 0 0 0 0 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** 0 0 4 22 21 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 0 21 11 0 0 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 0 0 0 3 *** DATE OF START AND END FREEZING START = 19 DEC. END = 26 DEC. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 7.6 4.5 8.6 13.5 17.3 21.1 25.6 23.9 22.3 17.7 14.0 6.0 15.2 AVERAGE OF MINIMUM TEMPERATURE IN C. 2.6 1.3 6.2 9.7 12.7 16.7 20.5 20.5 17.7 12.0 9.6 1.8 10.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.7 7.6 10.9 17.3 21.7 25.5 30.7 27.4 26.9 23.1 18.2 10.2 19.3 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.1 6.3 4.7 7.6 9.0 8.8 10.2 6.9 9.2 11.1 8.6 8.4 8.4 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.40 3.92 5.69 7.66 9.30 12.11 14.69 14.41 12.02 8.25 7.35 4.23 8.67 MEAN OF MIXING RATIO AT 09 GMT. 6.09 4.39 6.58 8.95 10.92 13.72 17.26 16.08 15.01 10.25 8.95 5.05 10.27 MEAN OF MIXING RATIO AT 15 GMT. 5.48 4.39 5.93 8.26 9.36 12.68 16.55 14.92 14.30 10.07 8.26 4.84 9.59 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -1.2 -3.0 0.0 4.0 4.5 14.5 17.0 18.0 14.0 6.0 5.0 -1.8 -3.0 DAY 1 19 17 13 2 1 5 31 27 22 23 12 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.2 10.8 14.5 23.8 33.0 30.0 35.0 30.5 29.0 28.0 22.5 16.0 35.0 DAY 5 3 28 22 26 10 22 9 24 5 25 14 24 HOUR MAXIMUM PRECIPITATION IN MM. 24.0 14.0 25.0 8.0 43.0 63.0 0.0 59.0 8.0 30.0 82.0 11.0 82.0 DAY 28 4 26 23 1 15 ** 29 4 19 30 5 MONTHLY TOTAL PRECIPITATION IN MM. 58.0 69.5 88.0 25.0 78.0 98.0 0.0 195.0 18.0 113.0 187.0 52.0 981.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 22.0 20.5 21.7 35.9 NO. OF DAYS WITH PRECIPITATION. 9 12 13 9 6 3 0 10 4 6 7 13 92 NO. OF DAYS PRECIPITATION EQUAL 9 12 13 9 6 3 0 10 4 6 7 13 92 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 3 4 0 2 3 0 6 0 5 4 1 30 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 89 88 92 91 84 84 83 88 87 83 90 89 87 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 70 73 86 79 71 70 66 75 72 60 76 71 72 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 85 85 87 86 73 75 72 78 81 80 84 84 81 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 1 12 11 1 0 0 0 25 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 1 2 22 4 0 0 0 0 29 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. 5 8 1 0 0 0 0 0 0 0 0 8 22 DATE OF START AND END FREEZING START = 9 DEC. END = 17 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 6.1 6.7 6.0 14.0 19.6 23.7 24.3 25.1 23.0 17.1 13.9 9.0 15.7 AVERAGE OF MINIMUM TEMPERATURE IN C. 1.4 1.8 2.2 9.3 14.0 18.7 20.8 20.1 18.6 12.9 9.7 4.4 11.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.5 11.1 10.0 18.7 25.1 28.7 27.8 30.1 27.4 21.3 17.9 13.4 20.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.1 9.3 7.8 9.4 11.1 10.0 7.0 10.0 8.8 8.4 8.2 9.0 9.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.16 4.27 4.46 7.23 10.44 13.62 14.09 13.87 12.53 8.97 7.23 5.09 8.83 MEAN OF MIXING RATIO AT 09 GMT. 5.47 5.51 5.53 8.80 12.77 16.17 15.51 16.49 15.62 10.82 9.48 6.72 10.74 MEAN OF MIXING RATIO AT 15 GMT. 5.02 4.94 5.04 7.97 11.44 14.33 14.58 15.61 14.42 10.00 8.12 5.53 9.75 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -3.5 -3.5 -4.8 4.0 8.0 12.5 18.0 16.5 15.0 7.5 4.5 -1.5 -4.8 DAY 18 24 12 18 7 10 24 29 20 29 30 31 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.0 24.0 24.5 28.5 30.0 31.0 31.0 32.5 31.0 26.0 24.0 18.5 32.5 DAY 21 15 21 24 31 20 13 7 11 18 16 9 24 HOUR MAXIMUM PRECIPITATION IN MM. 17.0 13.0 12.0 8.0 3.0 12.0 23.0 21.0 68.0 148.0 32.0 29.0 148.0 DAY 23 26 4 16 23 15 14 26 20 22 13 14 MONTHLY TOTAL PRECIPITATION IN MM. 59.0 79.0 64.0 15.0 7.0 21.5 62.0 37.0 142.0 353.0 126.0 117.0 1082.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 18.7 4.0 22.3 55.1 NO. OF DAYS WITH PRECIPITATION. 8 12 9 3 4 5 9 4 5 10 8 10 87 NO. OF DAYS PRECIPITATION EQUAL 8 12 9 3 4 5 9 4 5 10 8 10 87 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 2 3 0 0 1 3 1 3 5 5 6 31 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 90 88 88 87 86 84 85 83 85 88 89 86 87 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 74 72 76 72 68 69 71 66 72 75 82 77 73 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 86 84 83 78 72 71 76 73 78 84 84 82 79 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 2 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 7 17 9 2 0 0 0 35 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 1 9 4 20 8 0 0 0 42 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. 10 8 11 0 0 0 0 0 0 0 0 1 30 DATE OF START AND END FREEZING START = 31 DEC. END = 17 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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.***** 7.2 6.9 14.1 18.3 22.9 25.6 25.7 23.6 ***** ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** 2.9 3.1 9.4 14.0 17.9 20.9 20.3 17.9 ***** ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** 11.6 10.6 19.0 22.9 27.8 30.3 30.8 29.4 ***** ***** ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** 8.7 7.5 9.6 8.9 9.9 9.4 10.5 11.5 ***** ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** 4.63 4.65 7.22 10.03 12.28 14.57 14.01 11.36 ***** ***** ***** ***** MEAN OF MIXING RATIO AT 09 GMT. ***** 5.82 5.67 8.17 11.02 13.94 16.36 17.27 16.97 ***** ***** ***** ***** MEAN OF MIXING RATIO AT 15 GMT. ***** 5.26 5.12 8.12 10.47 13.41 15.51 16.30 15.63 ***** ***** ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** -1.8 -1.5 5.5 9.5 14.0 18.5 17.0 14.0 ***** ***** ***** ****** DAY ** 3 3 1 18 24 22 6 8 ** ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** 19.0 15.0 32.5 31.0 30.5 33.0 33.0 32.5 ***** ***** ***** ****** DAY ** 20 27 15 3 2 8 22 3 ** ** ** 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** 15.0 8.0 9.0 7.0 16.0 3.0 4.0 18.6 ***** ***** ***** ****** DAY ** 1 14 17 15 20 18 5 30 ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. ***** 28.0 51.0 28.0 17.0 30.0 6.0 4.0 37.5 ***** ***** ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 39.2 37.2 23.6 ***** NO. OF DAYS WITH PRECIPITATION. *** 8 12 6 7 3 3 1 7 *** *** *** *** NO. OF DAYS PRECIPITATION EQUAL *** 8 12 6 7 3 3 1 3 *** *** *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** 1 0 0 0 2 0 0 1 *** *** *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** 89 89 88 89 81 83 82 81 *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** 75 77 71 69 65 65 65 73 *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** 84 84 81 77 71 70 72 78 *** *** *** *** 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 0 0 3 13 13 4 *** *** *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 0 0 0 0 0 0 0 0 *** *** *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 0 0 1 1 8 21 26 15 *** *** *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 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 *** *** *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** 4 5 0 0 0 0 0 0 *** *** *** *** DATE OF START AND END FREEZING START = 3 FEB. END = 27 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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.***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 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 KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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.***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 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 KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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.***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 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 KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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.***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 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 KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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.***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 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 KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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.***** ***** ***** ***** ***** ***** ***** 23.6 21.9 16.4 12.7 9.0 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** 19.5 18.1 11.2 8.2 4.7 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** 27.8 26.2 21.6 17.1 13.2 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** ***** ***** ***** ***** 8.3 8.1 10.4 8.9 8.5 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** ***** ***** ***** ***** ***** 13.46 12.40 8.61 6.82 5.40 ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** ***** ***** ***** ***** ***** 16.34 15.94 12.44 9.55 7.74 ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** ***** ***** ***** ***** ***** 15.45 15.14 10.79 8.58 6.20 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** 16.0 14.0 8.0 5.0 2.0 ****** DAY ** ** ** ** ** ** ** 30 29 9 26 8 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** 31.0 29.0 29.5 21.0 21.5 ****** DAY ** ** ** ** ** ** ** 24 3 24 10 15 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** 50.0 73.0 150.0 73.0 24.0 ****** DAY ** ** ** ** ** ** ** 29 26 6 3 18 MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** 107.5 138.0 475.0 127.5 58.5 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION ***** ***** 27.1 72.9 NO. OF DAYS WITH PRECIPITATION. *** *** *** *** *** *** *** 11 10 6 5 7 *** NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** 11 10 6 5 7 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** 4 3 5 4 2 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** *** *** *** *** *** 84 88 92 91 93 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** *** *** *** *** *** 78 80 81 80 87 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** *** *** *** *** *** 84 90 92 92 92 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** 0 0 0 0 0 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** 3 0 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 *** *** *** *** *** *** *** 11 0 0 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 0 0 *** DATE OF START AND END FREEZING START = ** **** END = ** **** IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 6.1 4.4 7.8 12.6 17.4 ***** 23.9 25.8 ***** ***** ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. 1.4 0.1 2.3 6.7 12.3 ***** 19.6 21.5 ***** ***** ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.9 8.7 13.4 18.6 22.5 ***** 28.2 30.1 ***** ***** ***** ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.5 8.6 11.1 11.9 10.2 ***** 8.6 8.6 ***** ***** ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.22 3.85 4.56 6.02 9.61 ***** 14.04 14.92 ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 09 GMT. 5.88 5.34 7.76 8.87 13.05 ***** 17.44 18.41 ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 15 GMT. 4.91 4.90 6.19 8.11 11.23 ***** 16.34 17.40 ***** ***** ***** ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. 0.0 -6.5 1.0 1.0 9.0 ***** 16.5 20.5 ***** ***** ***** ***** ****** DAY 4 19 1 2 2 ** 4 1 ** ** ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 23.0 12.0 20.0 28.0 27.5 ***** 32.5 33.5 ***** ***** ***** ***** ****** DAY 28 8 25 10 31 ** 23 12 ** ** ** ** 24 HOUR MAXIMUM PRECIPITATION IN MM. 25.0 23.0 30.0 10.0 11.0 ***** 33.0 20.0 ***** ***** ***** ***** ****** DAY 15 3 11 13 13 ** 27 28 ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. 62.5 89.0 68.0 25.5 32.0 ***** 112.0 24.0 ***** ***** ***** ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 53.1 13.9 32.9 ***** NO. OF DAYS WITH PRECIPITATION. 5 6 5 4 4 *** 8 2 *** *** *** *** *** NO. OF DAYS PRECIPITATION EQUAL 5 6 5 4 4 *** 8 2 *** *** *** *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 5 3 2 2 *** 4 1 *** *** *** *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 95 90 92 85 90 *** 91 87 *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 79 84 89 75 85 *** 80 75 *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 93 90 92 84 86 *** 82 81 *** *** *** *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 3 0 0 0 *** 0 0 *** *** *** *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 *** 5 21 *** *** *** *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 *** 0 0 *** *** *** *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 *** 10 16 *** *** *** *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 *** 0 0 *** *** *** *** *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 *** 0 0 *** *** *** *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 1 7 0 0 0 *** 0 0 *** *** *** *** *** DATE OF START AND END FREEZING START = 4 JAN. END = 19 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 6.0 5.5 6.9 ***** 17.4 21.0 24.8 24.6 21.8 18.0 12.8 8.7 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. 1.9 1.3 2.8 ***** 12.1 16.8 20.0 19.3 16.8 13.8 9.4 4.4 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.2 9.8 11.0 ***** 22.8 25.2 29.6 29.8 26.8 22.3 16.2 13.0 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.3 8.5 8.2 ***** 10.7 8.4 9.6 10.5 10.0 8.6 6.8 8.6 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.07 4.27 4.86 ***** 8.89 12.62 15.44 16.08 13.81 10.99 8.04 5.73 ***** MEAN OF MIXING RATIO AT 09 GMT. 5.81 6.09 7.14 ***** 14.48 17.25 21.74 23.39 19.66 15.22 10.25 8.00 ***** MEAN OF MIXING RATIO AT 15 GMT. 5.26 4.55 5.86 ***** 12.47 15.53 18.91 18.84 15.98 12.57 8.80 6.33 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -2.0 -2.5 1.0 ***** 7.5 11.0 16.0 17.5 12.0 9.0 6.0 -5.0 ****** DAY 22 21 27 ** 16 29 6 1 4 24 22 9 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 17.5 19.5 ***** 28.5 29.0 31.5 32.5 29.5 27.0 20.0 17.2 ****** DAY 8 19 27 ** 23 15 21 17 17 7 4 17 24 HOUR MAXIMUM PRECIPITATION IN MM. 43.0 21.0 10.0 ***** 17.0 64.5 0.0 12.0 13.5 153.0 30.0 18.5 ****** DAY 5 10 13 ** 6 27 ** 30 3 20 24 4 MONTHLY TOTAL PRECIPITATION IN MM. 78.5 121.5 36.0 ***** 46.0 254.0 0.0 27.0 49.5 409.5 139.0 45.5 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 19.6 24.9 6.3 49.2 NO. OF DAYS WITH PRECIPITATION. 4 12 9 *** 5 11 0 6 6 12 10 4 *** NO. OF DAYS PRECIPITATION EQUAL 4 12 9 *** 5 11 0 6 6 12 10 4 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 4 1 *** 2 6 0 1 3 8 7 3 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 79 85 92 *** 91 93 91 94 96 95 94 93 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 83 90 92 *** 90 92 90 95 95 95 94 92 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 89 86 91 *** 91 95 94 94 96 96 96 92 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 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 1 6 3 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 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 *** 0 0 13 16 0 0 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. 15 9 0 *** 0 0 0 0 0 0 0 2 *** DATE OF START AND END FREEZING START = 8 DEC. END = 21 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 7.6 7.8 9.4 12.6 17.8 22.7 25.2 25.8 22.8 15.8 14.6 5.0 15.6 AVERAGE OF MINIMUM TEMPERATURE IN C. 2.6 3.3 4.5 7.4 13.9 17.6 20.3 21.7 17.8 11.1 8.8 0.2 10.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.8 12.3 14.4 17.8 21.6 27.8 30.1 29.9 27.7 20.5 20.3 9.8 20.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.2 9.0 9.9 10.3 7.7 10.1 9.8 8.2 9.9 9.4 11.5 9.6 9.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 5.27 5.25 5.48 6.95 10.39 13.51 15.03 16.42 13.18 8.29 7.40 3.73 9.24 MEAN OF MIXING RATIO AT 09 GMT. 8.00 7.32 8.81 10.80 13.68 19.19 20.28 19.21 17.86 12.58 13.42 6.36 13.13 MEAN OF MIXING RATIO AT 15 GMT. 6.20 6.12 6.75 8.54 11.33 17.24 17.13 18.82 15.82 10.80 10.89 3.80 11.12 ABSOLUTE OF MINIMUM TEMPERATURE IN C. 0.5 1.0 -0.5 4.0 11.0 13.0 15.5 20.5 10.5 6.0 4.5 -3.0 -3.0 DAY 30 21 3 1 3 9 5 15 22 27 14 12 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.5 19.5 17.0 21.5 25.0 33.5 32.5 32.0 31.5 28.0 27.5 13.0 33.5 DAY 3 11 30 15 23 30 13 3 9 1 4 12 24 HOUR MAXIMUM PRECIPITATION IN MM. 21.0 19.0 11.0 5.0 5.0 35.5 20.0 34.0 50.0 205.0 3.5 18.0 205.0 DAY 18 8 14 18 27 24 6 14 21 18 27 14 MONTHLY TOTAL PRECIPITATION IN MM. 48.5 77.5 27.0 14.0 7.0 82.0 35.0 61.0 90.5 509.2 3.5 88.5 1043.7 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 14.7 9.9 17.9 57.6 NO. OF DAYS WITH PRECIPITATION. 6 8 3 3 2 10 5 7 3 12 1 9 69 NO. OF DAYS PRECIPITATION EQUAL 6 8 3 3 2 10 5 7 3 12 1 9 69 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 4 1 0 0 3 1 2 3 10 0 5 30 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 94 94 93 93 93 93 90 90 89 91 91 90 92 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 95 91 93 93 90 89 79 77 79 88 94 89 88 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 94 93 94 92 91 91 79 85 85 89 92 86 89 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 19 29 11 0 0 0 59 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 0 6 24 16 14 0 0 0 60 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. 0 0 1 0 0 0 0 0 0 0 0 9 10 DATE OF START AND END FREEZING START = 4 DEC. END = 3 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 4.5 6.6 6.7 10.2 19.7 23.2 24.3 23.1 21.1 18.6 13.4 10.5 15.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.9 1.6 3.2 6.5 15.0 19.0 20.3 20.1 17.8 14.7 8.5 4.9 10.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.9 11.6 10.3 13.8 24.4 27.4 28.3 26.1 24.4 22.5 18.2 16.0 19.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.8 10.0 7.1 7.3 9.4 8.4 8.0 6.0 6.6 7.8 9.7 11.1 8.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.20 4.32 4.78 6.56 11.34 14.39 16.85 16.28 13.87 11.47 7.66 6.43 9.76 MEAN OF MIXING RATIO AT 09 GMT. 6.24 6.14 6.05 8.20 16.39 21.56 22.53 20.01 17.99 15.51 11.98 10.42 13.58 MEAN OF MIXING RATIO AT 15 GMT. 4.11 5.34 5.45 7.52 13.63 18.43 19.91 18.26 16.11 13.77 10.30 8.89 11.81 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.5 -2.5 1.0 1.5 10.5 16.5 18.0 19.0 14.0 10.5 4.5 1.5 -4.5 DAY 21 4 19 6 1 2 9 17 20 25 17 16 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 11.5 24.5 13.5 20.0 29.5 29.5 34.0 27.5 27.0 25.5 21.5 18.5 34.0 DAY 22 9 6 30 17 6 17 10 3 5 10 30 24 HOUR MAXIMUM PRECIPITATION IN MM. 23.5 58.5 13.0 22.0 4.0 22.0 68.0 34.0 53.0 53.0 3.0 69.0 69.0 DAY 10 2 9 10 22 30 30 14 20 1 8 18 MONTHLY TOTAL PRECIPITATION IN MM. 117.0 168.5 38.5 94.5 4.0 51.5 98.0 60.0 131.0 80.0 3.0 76.0 922.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 35.1 16.3 31.3 17.2 NO. OF DAYS WITH PRECIPITATION. 8 11 7 11 1 5 2 3 4 5 1 2 60 NO. OF DAYS PRECIPITATION EQUAL 8 11 7 11 1 5 2 3 4 5 1 2 60 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 6 6 2 4 0 2 2 2 4 2 0 1 31 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 79 86 91 92 92 96 96 98 97 96 96 94 93 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 86 82 84 87 91 97 96 98 97 96 96 96 92 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 85 85 88 91 91 96 96 97 97 97 97 96 93 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 5 0 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 1 8 4 2 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 0 0 10 0 0 0 0 0 10 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 3 0 0 0 0 0 0 0 0 0 0 18 DATE OF START AND END FREEZING START = 3 JAN. END = 6 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 7.8 6.8 11.0 13.2 18.3 24.3 25.3 26.5 20.9 18.8 12.6 8.0 16.1 AVERAGE OF MINIMUM TEMPERATURE IN C. 3.6 0.9 5.3 7.3 13.5 19.9 21.6 22.0 16.3 13.3 8.4 2.2 11.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.9 12.8 16.6 18.9 23.1 28.7 29.0 31.0 25.5 24.3 16.8 13.8 21.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.3 11.9 11.3 11.6 9.6 8.8 7.4 9.0 9.2 11.0 8.4 11.6 9.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 5.09 4.50 6.50 7.64 11.36 16.13 16.00 17.87 13.83 11.21 8.13 5.49 10.31 MEAN OF MIXING RATIO AT 09 GMT. 7.30 7.86 10.72 11.76 15.80 20.70 19.62 24.13 18.34 17.44 10.82 8.36 14.40 MEAN OF MIXING RATIO AT 15 GMT. 6.04 6.16 7.87 9.44 13.75 18.73 18.63 21.38 15.45 14.45 9.22 6.62 12.31 ABSOLUTE OF MINIMUM TEMPERATURE IN C. 1.0 -6.5 2.5 2.5 8.5 16.5 18.5 16.5 13.5 9.5 2.0 -4.0 -6.5 DAY 26 2 16 12 1 1 6 29 6 26 30 15 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.5 17.0 18.5 24.5 28.5 31.5 32.5 34.5 33.0 29.0 22.0 18.0 34.5 DAY 4 28 13 7 13 29 1 4 1 19 2 7 24 HOUR MAXIMUM PRECIPITATION IN MM. 20.0 6.5 40.0 30.0 21.0 15.0 31.0 5.0 70.0 60.0 61.0 61.5 70.0 DAY 27 1 29 12 20 24 7 29 3 24 6 17 MONTHLY TOTAL PRECIPITATION IN MM. 99.5 8.5 50.0 34.0 31.5 35.0 114.5 5.0 256.5 70.0 112.0 97.0 913.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 17.3 11.0 41.2 30.5 NO. OF DAYS WITH PRECIPITATION. 8 2 4 2 4 7 10 1 12 2 3 6 61 NO. OF DAYS PRECIPITATION EQUAL 8 2 4 2 4 7 10 1 12 2 3 6 61 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 6 0 1 1 1 1 4 0 7 2 3 3 29 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 90 87 94 95 94 93 91 93 96 95 95 92 93 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 89 91 96 94 95 90 84 90 95 96 96 90 92 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 93 95 95 96 95 92 88 94 95 95 95 92 94 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 1 0 0 0 0 0 0 0 0 0 2 3 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 10 27 25 1 0 0 0 63 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 0 7 11 23 1 0 0 0 42 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. 0 10 0 0 0 0 0 0 0 0 0 8 18 DATE OF START AND END FREEZING START = 13 DEC. END = 15 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 7.3 5.6 7.6 13.9 18.6 24.8 25.9 27.0 22.3 17.2 13.0 10.1 16.1 AVERAGE OF MINIMUM TEMPERATURE IN C. 1.2 -0.1 2.0 6.9 13.0 20.0 21.0 22.5 18.2 10.6 7.1 4.8 10.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.4 11.2 13.0 20.6 24.2 29.7 30.9 31.5 26.3 23.8 18.8 15.5 21.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.2 11.3 11.0 13.7 11.2 9.7 9.9 9.0 8.1 13.2 11.7 10.7 11.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.88 4.00 5.19 7.93 10.97 16.68 16.01 17.07 14.14 9.97 8.30 6.52 10.14 MEAN OF MIXING RATIO AT 09 GMT. 8.13 6.12 7.51 9.77 12.91 21.06 20.03 22.15 18.86 14.98 11.90 9.59 13.59 MEAN OF MIXING RATIO AT 15 GMT. 6.76 5.04 6.55 9.31 12.49 19.74 18.76 21.14 17.25 12.34 9.99 8.01 12.28 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.0 -5.0 -2.5 1.0 8.5 17.5 19.0 20.0 12.5 5.5 3.0 0.5 -5.0 DAY 9 21 3 5 1 2 1 6 11 14 26 29 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.5 14.5 18.0 32.5 31.0 33.5 33.0 34.0 33.0 31.5 23.5 21.0 34.0 DAY 1 9 30 14 21 20 31 4 1 1 16 31 24 HOUR MAXIMUM PRECIPITATION IN MM. 19.0 58.0 25.0 21.0 8.0 29.5 34.0 10.5 30.0 188.0 49.0 13.5 188.0 DAY 9 14 17 1 20 25 8 21 25 8 10 2 MONTHLY TOTAL PRECIPITATION IN MM. 46.0 153.0 44.5 66.0 25.0 39.0 77.5 35.0 183.5 446.0 169.0 43.0 1327.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 18.3 9.8 22.3 49.6 NO. OF DAYS WITH PRECIPITATION. 5 8 4 7 5 2 6 7 13 7 10 6 80 NO. OF DAYS PRECIPITATION EQUAL 5 8 4 7 5 2 6 7 13 7 10 6 80 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 4 1 3 0 1 2 1 8 4 6 1 33 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 92 89 91 91 89 89 85 87 94 94 94 92 91 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 91 84 88 72 73 84 74 81 91 85 92 93 84 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 91 86 91 84 85 89 83 89 93 92 94 91 89 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 3 1 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 9 16 27 3 0 0 0 55 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 2 15 23 25 2 1 0 0 69 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. 7 14 6 0 0 0 0 0 0 0 0 0 27 DATE OF START AND END FREEZING START = 9 JAN. END = 27 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 8.0 9.0 9.4 13.0 16.1 21.5 23.5 26.3 21.0 17.4 10.1 8.4 15.3 AVERAGE OF MINIMUM TEMPERATURE IN C. 1.8 1.7 4.0 6.4 9.8 14.4 17.1 20.0 15.5 11.2 4.0 0.9 8.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 14.1 16.3 14.8 19.6 22.4 28.6 30.0 32.6 26.6 23.5 16.3 15.9 21.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.3 14.6 10.8 13.2 12.6 14.2 12.9 12.6 11.1 12.3 12.2 15.0 12.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 5.17 5.23 6.19 7.72 10.02 12.47 14.51 16.69 13.08 10.51 6.50 5.39 9.46 MEAN OF MIXING RATIO AT 09 GMT. 8.44 7.27 8.59 11.25 12.99 17.60 17.95 20.58 15.88 13.14 8.64 8.77 12.59 MEAN OF MIXING RATIO AT 15 GMT. 6.76 6.81 7.26 9.65 10.94 13.98 16.62 19.95 15.41 12.16 7.74 6.59 11.16 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.0 -5.0 -2.5 0.0 5.5 10.5 12.5 17.4 10.0 5.0 -2.0 -4.0 -5.0 DAY 23 1 6 10 1 1 7 31 27 28 30 4 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 24.0 17.5 24.5 29.5 31.5 32.5 35.0 31.5 30.5 23.0 25.0 35.0 DAY 31 20 16 13 2 15 31 23 2 16 16 29 24 HOUR MAXIMUM PRECIPITATION IN MM. 20.0 14.0 24.0 27.0 40.5 9.0 160.0 49.0 20.0 87.0 26.5 22.5 160.0 DAY 18 4 17 8 21 29 12 31 23 25 1 16 MONTHLY TOTAL PRECIPITATION IN MM. 51.5 21.5 45.5 34.0 118.0 9.0 216.5 90.0 59.5 177.5 139.0 46.5 1008.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 11.8 16.0 36.3 36.0 NO. OF DAYS WITH PRECIPITATION. 5 3 4 3 8 1 3 4 7 6 10 3 57 NO. OF DAYS PRECIPITATION EQUAL 5 3 4 3 8 1 3 4 7 6 10 3 57 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 1 2 1 6 0 3 3 2 5 7 2 34 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 90 87 93 91 90 78 81 83 88 91 90 92 88 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 89 70 87 83 80 75 71 70 77 77 80 81 78 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 88 88 89 89 85 74 78 81 89 89 90 90 86 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 1 4 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 0 6 0 0 0 0 6 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 0 9 24 28 4 1 0 0 66 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 8 3 1 0 0 0 0 0 0 1 14 36 DATE OF START AND END FREEZING START = 30 NOV. END = 10 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 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. 6.0 6.1 7.5 14.4 16.4 20.5 24.7 25.4 22.0 15.3 10.8 7.6 14.7 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.3 -0.3 1.3 6.8 9.5 13.5 18.2 19.0 16.8 9.5 5.4 1.1 8.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.3 12.5 13.6 22.1 23.3 27.6 31.1 31.7 27.1 21.2 16.2 14.1 21.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.6 12.8 12.3 15.3 13.8 14.1 12.9 12.7 10.3 11.7 10.8 13.0 12.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.66 4.26 4.97 8.05 10.31 13.01 14.16 15.31 14.20 9.42 7.00 5.03 9.20 MEAN OF MIXING RATIO AT 09 GMT. 6.71 6.96 7.95 10.80 12.04 19.96 17.58 19.83 16.80 11.46 9.20 7.96 12.27 MEAN OF MIXING RATIO AT 15 GMT. 5.71 5.77 5.97 10.06 11.52 15.23 17.13 18.26 15.32 10.87 7.98 6.36 10.85 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -7.0 -4.0 -7.0 2.0 5.0 8.5 16.5 16.0 13.0 5.0 1.5 -4.5 -7.0 DAY 18 5 16 3 11 12 1 1 26 16 18 17 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 21.5 19.0 20.0 29.0 31.0 32.5 34.5 35.5 32.5 25.5 20.0 17.0 35.5 DAY 19 23 11 21 3 8 23 2 8 8 4 17 24 HOUR MAXIMUM PRECIPITATION IN MM. 39.5 11.5 29.0 6.0 22.5 30.0 3.5 32.5 40.0 61.5 39.5 10.0 61.5 DAY 14 26 24 21 4 12 13 29 11 14 14 9 MONTHLY TOTAL PRECIPITATION IN MM. 155.5 20.5 107.0 10.0 75.0 59.0 3.5 61.0 105.5 119.0 104.5 39.5 860.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 32.9 16.7 19.8 30.6 NO. OF DAYS WITH PRECIPITATION. 12 2 9 2 9 4 1 4 5 5 8 6 67 NO. OF DAYS PRECIPITATION EQUAL 12 2 9 2 9 4 1 4 5 5 8 6 67 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 5 1 4 0 2 2 0 2 5 3 3 1 28 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 90 92 92 89 88 85 74 79 90 89 91 89 87 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 80 81 89 70 71 87 65 71 78 77 84 83 78 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 90 90 89 83 82 87 75 78 87 89 91 89 86 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 5 1 2 0 0 0 0 0 0 0 0 3 11 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 0 0 0 0 0 2 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 1 7 21 27 2 0 0 0 58 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. 19 19 9 0 0 0 0 0 0 0 0 11 58 DATE OF START AND END FREEZING START = 3 DEC. END = 26 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. MEAN AND EXTREMES FOR THE PERIOD 1961 TO 2000 PAGE 1 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPE. IN C. 6.9 7.0 9.0 13.5 18.6 22.4 24.9 25.0 21.9 17.6 13.4 9.3 15.8 SD OF MEAN DAILY TEMPERATURE IN C. 1.96 1.83 1.75 1.43 1.28 1.22 0.94 1.02 1.02 1.13 1.40 1.70 1.39 AVERAGE OF MINIMUM TEMPERATURE IN C. 2.4 2.7 5.0 9.0 14.0 17.8 20.4 20.6 17.8 13.1 8.8 4.6 11.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.4 11.2 12.9 18.0 23.1 27.0 29.5 29.4 26.1 22.0 17.9 14.0 20.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.0 8.5 7.9 9.0 9.2 9.2 9.0 8.8 8.3 8.9 9.2 9.4 8.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.51 4.66 5.59 7.44 10.36 13.11 14.77 14.99 12.74 9.74 7.21 5.35 9.20 MEAN OF MIXING RATIO AT 09 GMT. 6.03 5.95 7.03 9.15 12.50 15.94 17.46 17.93 15.78 12.37 9.52 7.28 11.41 MEAN OF MIXING RATIO AT 15 GMT. 5.51 5.51 6.34 8.39 11.51 14.64 16.57 17.08 14.74 11.38 8.67 6.43 10.56 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.5 -8.0 -7.0 0.0 4.5 8.5 12.5 15.0 5.0 4.2 -2.0 -5.5 -8.5 YEAR - DAY 64-30 72- 2 0-16 99-10 84- 2 0-12 99- 7 75-18 77-24 77-19 99-30 63-26 64-30 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 26.5 24.5 30.0 34.0 33.0 35.5 35.0 38.0 34.0 32.4 30.6 28.0 38.0 YEAR - DAY 67-15 96- 9 76-14 78- 6 84-26 80- 4 76-30 76- 8 78- 9 78-23 81- 4 80- 5 76- 8 24 HOUR MAXIMUM PRECIPITATION IN MM. 83.0 73.4 50.0 44.5 56.0 76.8 160.0 113.0 204.0 205.0 170.0 81.0 205.0 YEAR - DAY 70- 1 67-14 80-15 68- 4 81-16 61- 6 99-12 75-16 66-21 95-18 78- 2 79-16 95-18 MONTHLY TOTAL PRECIPITATION IN MM. 92.8 80.6 82.7 54.1 47.4 64.5 50.6 69.6 148.4 255.0 132.5 101.6 1179.8 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 21.7 14.1 22.8 41.5 NO. OF DAYS WITH PRECIPITATION. 9 9 10 9 7 6 5 7 9 10 8 9 98 NO. OF DAYS PRECIPITATION EQUAL 9 8 10 8 7 6 5 6 9 10 8 8 94 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 3 3 2 1 2 1 2 4 5 4 3 33 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 88 90 91 91 90 88 87 88 89 90 90 88 89 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 76 77 80 76 75 75 71 74 78 78 78 77 76 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 88 87 88 85 83 81 80 83 86 88 89 88 86 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 1 1 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 3 14 14 3 0 0 0 34 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 1 5 15 15 3 0 0 0 39 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. 7 5 2 0 0 0 0 0 0 0 0 3 17 DATE OF START AND END FREEZING START = 30 NOV. END = 10 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KHORAMABAD-TONKABON LATITUDE 36 46 N DATA PROCESSING CENTER LONGITUDE 50 54 E ELEVATION 50 MET. MEAN AND EXTREMES FOR THE PERIOD 1961 TO 2000 PAGE 2 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE DRY BULB TEMPERATURE. IN C. 7.1 7.1 9.1 13.8 19.0 23.1 25.5 25.4 22.2 17.9 13.6 9.4 16.1 AVERAGE DEW POINT TEMPERATURE. IN C. 4.3 4.4 6.8 10.9 15.7 19.5 21.3 21.7 19.4 15.3 11.0 6.8 13.1 AVERAGE OF MIXING RATIO IN G/KG 5.35 5.37 6.31 8.32 11.45 14.56 16.26 16.66 14.42 11.16 8.47 6.35 10.39 AVERAGE OF VAPOUR PRESSURE HPA 8.58 8.61 10.12 13.29 18.20 23.02 25.65 26.27 22.80 17.73 13.51 10.18 16.50 AVERAGE OF SATURATION DEFICIT IN HPA 1.87 1.79 1.82 3.03 4.39 5.80 7.45 6.67 4.60 3.29 2.53 2.09 3.78 AVERAGE RELATIVE HUMIDITY IN PERCENT 84 85 87 84 82 81 79 81 85 86 86 85 84 AVERAGE OF MAXIMUM RELATIVE HUMIDITY(%) 92 93 93 92 91 89 88 89 91 92 93 92 91 AVERAGE OF MINIMUM RELATIVE HUMIDITY(%) 74 75 79 75 73 73 70 73 77 77 77 75 75 NO. OF DAYS PRECIPITATION EQUAL 5 5 5 3 3 3 2 3 5 7 5 6 52 OR MORE THAN 5 MM.