"station_id" "year" "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul" "Aug" "Sep" "Oct" "Nov" "Dec" 173892 1970 -10.5 -6.2 -3.0 4.1 11.1 16.5 21.6 13.0 9.0 2.1 -8.0 173892 1971 -8.0 -6.1 3.0 11.2 15.8 19.4 17.6 13.8 8.5 -1.5 -7.2 173892 1972 -7.3 -8.0 -5.2 1.7 11.7 17.3 19.8 16.1 12.5 3.8 -0.7 -8.2 173892 1973 -6.5 -5.7 0.5 4.1 9.7 18.4 21.9 19.9 12.5 7.6 -2.0 -3.8 173892 1974 -7.7 -8.5 -3.8 3.5 7.8 16.6 18.1 17.6 11.4 3.5 -1.3 -6.2 173892 1975 -7.2 -6.5 -3.9 0.8 11.9 16.6 21.2 17.9 12.7 6.2 1.5 -7.7 173892 1976 -8.1 -7.1 -3.2 4.2 10.8 17.8 18.6 18.0 11.9 5.4 -1.9 -9.2 173892 1977 -9.3 -8.7 -0.5 1.7 10.4 13.7 17.7 17.1 10.6 7.8 1.2 -6.5 173892 1978 -10.1 -7.3 -5.2 2.3 13.2 16.4 18.9 17.5 9.5 4.7 -2.1 -7.5 173892 1979 -5.1 -8.2 0.9 4.6 11.6 16.2 20.6 16.5 12.2 6.8 2.1 -4.2 173892 1980 -7.4 -9.1 -2.8 5.1 10.3 16.2 18.0 19.4 11.3 5.2 -1.2 -7.6 173892 1981 -8.7 -1.7 -1.3 4.9 11.8 15.4 19.1 18.1 11.9 5.6 0.2 -4.7 173892 1982 -9.6 -8.7 -2.4 3.5 12.1 14.6 18.8 15.1 12.9 6.7 0.7 -4.4 173892 1983 -7.6 -8.0 -1.7 5.4 10.0 16.8 19.0 18.0 14.1 5.8 0.8 -7.5 173892 1984 -9.1 -3.6 -5.2 4.0 9.8 15.3 19.1 19.4 11.4 6.5 1.0 -5.2 173892 1985 -11.1 -5.1 -2.2 2.8 173892 1986 173892 1987 -5.9 173892 1988 -7.1 -6.4 -3.9 4.3 12.6 15.2 20.1 18.4 11.6 5.1 2.0 -7.0 173892 1989 -6.8 -8.1 -4.3 2.6 13.1 15.2 17.8 16.9 12.1 6.3 -1.6 -10.7 173892 1990 -6.2 -7.9 -3.1 3.9 8.9 16.4 19.0 18.8 11.6 6.9 -0.1 -4.9 173892 1991 -9.1 -5.2 -2.2 4.3 11.3 16.2 18.9 18.3 11.1 7.5 0.8 -7.8 173892 1992 -8.1 -8.2 -4.7 2.8 11.1 15.5 15.6 17.8 13.2 5.0 -1.4 -5.7 173892 1993 -8.4 -8.9 -3.9 4.0 10.3 14.8 18.1 19.0 12.6 4.2 -0.6 -4.3