"station_id" "year" "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul" "Aug" "Sep" "Oct" "Nov" "Dec" 01064000 1901 16.17 17.51 17.89 01064000 1902 17.06 16.69 18.72 119.06 33.60 16.59 18.43 19.47 18.01 16.95 19.11 16.49 01064000 1903 17.58 17.36 17.89 18.05 17.02 18.40 18.90 18.83 19.38 19.30 18.23 17.29 01064000 1904 15.52 12.06 13.27 16.12 16.94 18.74 16.94 17.34 18.31 17.43 18.66 15.56 01064000 1905 13.74 11.64 9.71 13.14 13.88 13.82 12.97 13.05 13.11 12.90 11.51 10.89 01064000 1906 13.99 17.43 15.21 14.49 14.98 15.67 17.67 19.27 19.28 19.76 17.67 13.20 01064000 1907 14.31 13.28 8.39 10.13 13.59 14.82 14.35 11.84 9.46 13.82 16.82 17.29 01064000 1908 19.13 21.68 15.65 14.81 15.85 18.05 15.93 19.23 20.35 19.76 18.73 16.61 01064000 1909 14.15 14.63 17.15 13.80 17.39 19.26 18.38 18.34 17.99 18.17 18.74 18.25 01064000 1910 17.66 18.15 14.58 14.40 14.49 14.92 14.39 14.76 14.67 13.97 13.42 10.14 01064000 1911 8.76 10.62 8.96 8.11 8.78 8.96 6.10 4.51 7.73 8.96 13.84 10.86 01064000 1912 14.06 13.79 10.14 9.67 13.29 13.43 13.89 16.28 17.02 17.31 17.02 19.19 01064000 1913 18.23 20.57 16.19 16.70 16.76 16.89 16.75 17.45 17.29 16.59 17.46 16.51 01064000 1914 16.77 17.40 13.71 12.72 15.59 16.48 16.06 18.11 19.16 18.72 16.07 16.35 01064000 1915 14.94 14.11 14.01 12.88 10.23 7.86 5.02 10.98 14.93 15.29 15.78 16.24 01064000 1916 15.98 15.56 15.60 13.02 15.20 45.84 23.17 21.48 20.50 21.54 21.74 19.92 01064000 1917 20.86 21.38 20.80 19.79 20.21 44.11 32.54 19.57 19.16 20.19 19.58 19.86 01064000 1918 19.29 19.15 16.91 13.76 13.53 14.00 15.70 17.84 14.64 15.24 13.91 13.79 01064000 1919 14.98 16.20 13.68 30.14 26.30 21.74 17.26 18.39 18.42 19.22 17.21 18.85 01064000 1920 20.96 20.55 17.31 30.75 53.57 21.28 19.10 19.71 19.37 19.59 19.88 19.34 01064000 1921 19.59 20.38 17.82 31.61 20.12 16.62 14.40 14.82 14.64 15.35 13.96 13.30 01064000 1922 14.11 14.03 10.81 10.79 21.54 44.76 21.73 18.71 20.10 21.37 20.34 17.99 01064000 1923 18.03 18.77 18.50 14.16 14.06 14.74 15.29 14.48 14.57 15.18 14.29 12.76 01064000 1924 14.65 14.96 17.56 14.83 24.77 18.74 13.23 12.28 14.81 16.55 16.26 16.49 01064000 1925 17.37 14.77 13.03 23.83 19.10 16.98 15.64 14.73 14.49 15.01 13.92 14.56 01064000 1926 18.55 19.52 19.38 14.67 14.54 15.81 12.90 13.93 13.47 14.24 13.75 16.48 01064000 1927 16.57 17.51 13.83 13.86 10.46 12.22 11.01 13.30 13.06 13.45 13.49 13.77 01064000 1928 17.95 20.59 20.30 20.14 31.48 23.26 17.29 18.41 17.96 19.53 20.47 20.07 01064000 1929 21.19 21.63 19.49 20.15 28.27 20.83 18.51 17.57 18.76 19.25 17.19 17.56 01064000 1930 17.65 17.13 11.84 12.92 10.54 9.61 11.51 10.21 12.58 12.43 12.34 15.48 01064000 1931 15.49 16.69 14.38 12.97 14.53 13.87 16.54 15.83 16.07 15.36 14.20 16.70 01064000 1932 15.70 17.15 15.92 11.53 12.22 13.75 12.06 14.23 12.64 16.21 14.12 12.87 01064000 1933 12.48 13.08 13.77 22.65 23.05 18.68 18.48 18.77 17.19 16.24 17.18 16.28 01064000 1934 18.65 18.45 17.25 17.23 20.83 18.15 16.17 14.65 15.04 18.64 16.17 14.85 01064000 1935 18.71 22.34 22.19 20.36 20.28 18.76 20.26 19.85 17.18 16.25 15.96 16.59 01064000 1936 19.70 19.32 40.22 79.78 19.48 18.54 18.68 19.07 20.28 19.78 17.64 18.82 01064000 1937 20.65 21.27 18.53 18.15 44.27 24.06 21.18 21.33 19.24 18.16 16.46 18.71 01064000 1938 19.98 21.97 18.65 17.71 18.64 17.62 16.59 18.99 18.80 19.02 19.52 17.69 01064000 1939 19.48 21.01 19.87 24.46 31.16 20.38 18.31 20.94 20.17 20.80 19.06 17.15 01064000 1940 21.23 20.32 13.94 10.57 21.65 26.33 22.12 20.39 17.29 22.03 19.99 20.93 01064000 1941 20.43 19.14 18.83 16.12 15.51 13.84 8.39 7.57 6.59 6.83 6.66 6.31 01064000 1942 5.91 7.13 5.36 8.08 11.52 12.51 16.29 16.12 17.15 19.13 18.87 19.44 01064000 1943 21.45 21.28 19.82 12.74 10.93 16.06 16.86 19.12 18.42 18.83 20.17 22.21 01064000 1944 24.45 24.83 20.98 16.29 19.13 18.83 17.92 17.13 14.61 17.31 17.06 17.96 01064000 1945 19.68 21.78 19.24 19.47 38.10 36.86 22.32 21.50 19.94 25.40 23.21 24.56 01064000 1946 28.33 27.76 23.61 15.16 17.29 22.64 17.31 18.92 20.24 20.15 19.16 19.27 01064000 1947 20.57 19.79 21.20 21.68 24.61 26.08 23.55 22.33 22.83 19.91 18.70 17.60 01064000 1948 15.74 12.42 9.70 15.46 8.98 18.39 16.67 15.00 13.00 10.71 10.36 12.29 01064000 1949 14.86 16.00 14.71 15.01 15.68 20.00 11.14 10.95 11.13 14.65 12.38 8.17 01064000 1950 7.01 7.40 9.57 9.54 14.60 16.30 16.63 16.41 15.93 14.85 14.38 15.67 01064000 1951 19.10 20.22 20.09 55.47 24.30 23.64 18.36 21.23 21.20 20.61 22.54 22.29 01064000 1952 23.80 30.99 26.38 62.05 50.33 44.61 19.69 23.64 23.47 20.80 18.57 15.63 01064000 1953 15.73 15.33 16.86 84.21 37.53 21.91 21.45 22.87 21.28 20.76 16.91 15.40 01064000 1954 15.43 15.98 12.92 14.42 26.20 29.61 19.19 23.27 30.17 27.92 36.72 36.34 01064000 1955 39.61 29.79 22.59 23.56 23.63 23.62 21.31 19.16 18.56 18.06 17.10 14.52 01064000 1956 10.19 17.83 18.29 11.83 18.81 18.91 18.63 21.98 20.77 21.82 21.59 19.76 01064000 1957 19.21 18.75 17.17 12.73 9.91 8.39 8.06 8.72 8.77 7.30 7.94 7.93 01064000 1958 9.02 18.34 19.03 30.48 30.99 19.47 16.66 20.41 22.05 20.73 18.21 17.32 01064000 1959 18.12 18.96 17.11 13.67 15.41 15.16 13.98 15.60 13.26 11.91 11.59 12.10 01064000 1960 17.83 17.77 22.69 30.74 48.70 26.03 20.46 22.33 21.27 22.98 23.21 18.79 01064000 1961 22.88 22.93 22.32 15.96 22.44 23.11 18.89 23.53 18.99 17.94 16.35 14.04 01064000 1962 15.65 14.11 12.71 6.37 10.26 11.04 8.89 12.01 12.41 15.87 22.66 23.40 01064000 1963 24.13 23.69 24.44 23.54 25.10 23.27 20.21 19.51 16.19 14.29 11.50 14.90 01064000 1964 16.53 23.50 23.14 23.59 23.83 23.69 15.42 16.95 16.52 16.46 15.32 11.92 01064000 1965 10.98 9.87 10.02 11.62 14.56 14.56 7.50 7.46 7.75 6.35 5.33 5.18 01064000 1966 5.51 5.40 5.73 7.50 7.23 11.33 14.15 14.19 14.33 13.88 14.61 17.62 01064000 1967 18.10 14.05 15.72 13.95 19.20 17.82 12.94 21.26 20.70 18.71 15.86 15.28 01064000 1968 12.15 16.07 12.07 11.84 13.44 23.57 17.42 23.23 19.59 12.11 12.14 11.41 01064000 1969 13.56 16.90 22.66 41.69 37.58 22.36 18.86 23.53 22.88 22.60 13.31 17.08 01064000 1970 29.70 36.01 35.98 35.30 33.91 26.31 20.80 23.20 14.32 12.41 11.71 11.76 01064000 1971 10.41 9.44 12.00 18.36 19.56 23.06 14.58 18.57 18.56 18.55 14.92 11.22 01064000 1972 9.33 9.54 8.65 8.33 22.24 23.40 16.50 23.08 22.95 23.18 23.07 22.70 01064000 1973 22.97 23.21 23.19 22.59 43.41 30.27 35.23 23.37 23.39 23.14 23.25 20.15 01064000 1974 25.48 27.39 24.17 37.19 41.46 27.24 17.42 21.58 18.90 20.53 19.97 15.38 01064000 1975 17.22 12.19 9.73 19.20 21.75 15.72 14.25 18.20 13.85 13.78 14.75 19.29 01064000 1976 22.87 25.72 28.17 29.34 29.38 27.44 16.82 17.52 17.85 17.47 18.12 18.58 01064000 1977 18.48 21.65 18.81 25.83 29.37 18.45 19.67 19.82 13.95 13.52 21.61 23.92 01064000 1978 28.82 52.51 25.89 24.30 32.51 23.05 17.07 23.22 19.01 12.14 7.34 7.78 01064000 1979 8.45 8.75 12.61 14.47 42.61 28.95 18.59 19.54 18.32 18.55 18.92 18.77 01064000 1980 15.27 8.95 7.33 7.43 9.55 10.51 9.84 9.91 11.42 11.75 11.85 11.91 01064000 1981 11.84 10.74 11.33 11.23 10.26 10.66 9.72 11.40 21.50 9.89 19.08 24.10 01064000 1982 28.56 28.01 27.51 18.95 23.92 19.07 19.03 21.97 15.03 12.64 11.97 11.84 01064000 1983 11.89 14.49 26.34 57.61 38.10 30.77 17.93 19.33 17.61 16.83 18.03 23.47 01064000 1984 32.31 37.38 37.23 60.70 33.20 60.52 15.69 18.01 18.91 9.59 9.71 14.38 01064000 1985 13.82 10.45 9.82 8.01 5.20 5.12 4.94 5.24 5.01 4.96 4.97 4.95 01064000 1986 7.93 21.66 19.97 22.80 21.34 23.51 20.74 18.96 18.75 16.22 9.91 21.17 01064000 1987 23.29 21.77 10.31 22.80 23.14 12.97 9.91 9.79 10.14 9.91 9.91 14.35 01064000 1988 14.80 21.16 23.30 9.37 9.47 8.68 9.73 12.09 11.59 9.75 13.41 19.06 01064000 1989 19.46 18.98 15.63 9.63 56.30 34.53 12.88 11.97 10.70 7.89 12.06 16.01 01064000 1990 18.93 23.39 23.14 13.21 20.34 23.18 12.11 14.53 13.93 12.12 26.21 46.35 01064000 1991 30.18 27.72 19.21 10.34 18.36 7.57 10.48 15.15 16.94 33.11 27.94 22.31 01064000 1992 15.71 15.46 15.66 15.16 9.24 7.87 15.75 14.43 9.55 9.21 13.32 22.47 01064000 1993 15.38 9.26 16.05 19.30 27.52 9.44 10.76 9.58 9.58 9.03 12.21 22.64 01064000 1994 20.93 24.04 22.57 20.52 28.15 20.56 13.18 11.15 9.42 8.78 9.30 17.50 01064000 1995 21.71 19.73 15.79 9.07 6.69 8.44 9.72 10.55 8.06 6.60 14.41 35.82 01064000 1996 24.07 25.50 38.92 27.36 39.21 9.36 36.41 13.85 8.93 5.54 37.06 37.56 01064000 1997 49.40 21.71 11.41 22.38 26.81 9.30 13.95 9.65 18.12 20.83 22.27 22.25 01064000 1998 18.11 12.14 13.93 28.64 25.20 58.77 34.73 10.56 10.67