"station_id" "year" "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul" "Aug" "Sep" "Oct" "Nov" "Dec" 178398 1970 -9.2 -6.5 -5.2 1.4 8.4 15.3 19.0 17.4 10.7 6.7 -8.7 178398 1971 -7.4 -6.3 -4.4 1.5 9.7 14.3 17.3 15.8 12.6 7.6 -2.7 -7.2 178398 1972 -7.2 -7.2 -5.6 0.1 9.6 16.0 17.9 14.6 11.4 3.4 -2.8 -8.5 178398 1973 -7.2 -5.6 -2.0 2.2 8.3 16.7 19.6 18.2 11.2 5.2 -3.2 -4.4 178398 1974 -7.2 -8.4 -5.7 0.5 5.5 15.3 16.8 16.2 10.2 2.8 -1.2 -6.5 178398 1975 -7.0 -5.5 -4.6 -0.2 10.8 15.6 19.8 17.4 11.5 5.3 -0.2 -7.6 178398 1976 -7.1 -7.3 -3.5 2.1 9.7 16.7 17.2 17.0 10.8 4.0 -3.4 -9.4 178398 1977 -8.9 -8.3 -1.4 0.7 9.3 14.3 16.8 15.9 9.7 5.5 0.4 -7.2 178398 1978 -8.9 -7.0 -6.2 0.4 11.5 15.6 16.9 16.1 8.5 4.4 -2.3 -7.6 178398 1979 -5.6 -8.4 -0.5 3.2 11.1 16.2 19.1 14.8 10.8 5.7 0.8 -5.8 178398 1980 -9.4 -8.2 -4.8 3.3 9.0 13.9 17.5 17.6 9.8 4.2 -1.9 -7.7 178398 1981 -8.4 -2.8 -3.3 3.3 11.2 14.4 17.5 16.8 11.2 4.6 0.4 -5.2 178398 1982 -9.2 -7.6 -4.1 0.7 9.8 14.3 18.0 14.1 11.9 6.0 0.5 -5.0 178398 1983 -7.5 -7.4 -2.3 4.2 8.9 15.9 17.3 17.3 13.1 6.0 -0.1 -7.6 178398 1984 -8.1 -4.2 -5.0 2.9 8.9 14.3 18.8 18.4 10.3 6.8 -0.5 -6.0 178398 1985 -10.4 -6.6 -4.4 1.1 8.9 14.0 17.6 15.6 12.2 6.1 -2.8 -8.4 178398 1986 -7.3 -8.5 -4.8 5.0 10.7 12.8 15.6 15.3 9.4 4.3 -3.3 -7.3 178398 1987 -8.5 -9.2 -1.7 5.3 9.3 14.6 18.2 15.2 11.8 6.4 -2.4 -6.5 178398 1988 -7.1 -6.7 -5.2 3.4 10.9 14.5 19.2 17.6 10.7 4.5 -0.5 -8.0 178398 1989 -7.6 -6.7 -4.6 1.2 12.4 15.1 17.4 16.7 11.9 5.3 -0.9 -9.9 178398 1990 -6.9 -6.8 -3.5 2.3 8.5 16.2 18.0 18.3 11.1 6.3 -0.7 -6.0 178398 1991 -8.6 -5.7 -4.3 2.6 10.1 15.4 17.8 17.9 10.3 5.5 0.7 -8.0 178398 1992 -8.4 -7.9 -5.3 1.3 10.5 15.1 14.3 17.1 12.5 3.2 -2.3 -6.3 178398 1993 -8.2 -8.3 -4.1 2.6 9.6 14.5 17.4 19.0 11.6 3.3 -0.6 -5.5