"station_id" "year" "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul" "Aug" "Sep" "Oct" "Nov" "Dec" 174781 1970 -11.3 -8.7 -4.8 1.7 9.8 15.2 18.8 17.5 12.4 7.8 1.0 -9.2 174781 1971 -8.7 -7.2 -5.0 1.9 9.3 15.1 17.8 16.9 13.8 8.8 -1.7 -7.6 174781 1972 -7.1 -8.7 -5.7 -0.4 9.2 14.8 17.7 15.4 12.3 3.7 -1.4 -8.3 174781 1973 -6.5 -7.2 3.2 8.5 16.0 19.0 19.0 11.9 6.9 -0.6 -4.2 174781 1974 -7.5 -9.6 -4.9 2.3 6.8 14.9 17.4 16.7 11.1 3.3 0.1 -5.4 174781 1975 -6.7 -6.4 -5.4 -0.1 11.4 15.0 19.0 17.0 10.8 6.4 2.2 -7.9 174781 1976 -7.7 -7.4 -4.6 3.5 8.9 15.9 15.9 16.6 12.0 4.5 -1.6 -10.0 174781 1977 -10.7 -8.7 -0.6 2.0 10.8 14.0 17.4 16.0 10.9 5.9 1.1 -7.3 174781 1978 -10.9 -9.7 -6.3 0.7 10.7 14.4 17.3 16.2 9.6 5.4 -1.3 -7.0 174781 1979 -7.6 -9.3 -1.2 2.4 10.5 15.0 18.5 15.6 12.1 6.2 2.6 -5.0 174781 1980 -9.3 -9.5 -4.0 4.1 9.8 13.7 17.6 17.6 174781 1981 -9.6 -3.5 -2.5 4.1 11.1 15.4 18.0 16.2 11.7 4.9 0.4 -5.3 174781 1982 -10.6 -9.1 -4.5 0.7 12.9 6.8 1.4 -3.6 174781 1983 -8.0 -6.4 -2.2 3.5 8.7 16.1 18.6 17.4 14.0 6.5 0.4 -7.3 174781 1984 -8.5 -3.6 -5.7 3.4 8.8 15.2 18.6 18.9 10.8 7.4 0.6 -4.9 174781 1985 -11.3 -7.0 -4.4 2.2 9.6 13.7 17.8 16.2 13.0 6.8 -0.4 -8.3 174781 1986 -7.9 -9.0 -3.3 6.1 10.6 13.7 16.8 16.2 10.7 6.3 -1.8 -6.4 174781 1987 -8.6 -8.9 -1.8 5.2 9.6 15.4 18.1 15.7 12.3 6.0 -0.9 -5.2 174781 1988 -7.7 -7.5 -4.5 2.9 10.6 14.7 19.1 17.8 11.6 4.6 0.9 -8.1 174781 1989 -7.5 -8.5 -5.0 1.5 11.6 15.3 17.8 16.2 12.5 6.7 -1.4 -12.3 174781 1990 -5.9 -7.1 -3.1 3.3 8.6 15.5 18.1 18.0 12.2 7.4 0.6 -5.1 174781 1991 -9.1 -5.9 -3.2 4.1 11.4 15.5 17.7 17.8 10.7 7.0 0.1 -7.1 174781 1992 -8.6 -8.2 -5.9 1.5 9.7 14.8 15.4 16.7 12.4 4.7 -1.0 -5.7 174781 1993 -7.9 -9.4 -4.2 2.9 10.1 14.9 17.8 18.1 12.1 3.7 -0.4 -5.3