"station_id" "year" "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul" "Aug" "Sep" "Oct" "Nov" "Dec" 173261 1970 -11.0 -6.5 -1.7 4.2 11.0 16.5 20.2 19.6 13.4 9.2 2.7 -8.3 173261 1971 -8.2 -6.2 -1.9 4.0 11.1 16.1 19.5 18.9 15.0 9.9 0.7 -6.2 173261 1972 -6.7 -7.0 -4.9 2.4 11.0 15.9 19.2 18.0 14.5 5.4 0.5 -8.4 173261 1973 -6.1 -6.3 0.9 5.4 9.4 17.2 20.6 20.1 13.6 7.9 0.9 -0.9 173261 1974 -6.6 -7.4 -2.5 4.1 8.3 16.2 19.8 12.7 4.6 1.6 -4.2 173261 1975 -6.3 -6.2 -3.4 2.7 12.0 16.0 20.5 18.1 12.3 7.6 2.9 -6.6 173261 1976 -6.9 -6.2 -2.6 5.3 10.5 18.4 17.1 17.1 13.5 6.5 0.2 -8.5 173261 1977 -9.7 -8.4 1.0 3.6 11.3 14.3 19.5 18.4 12.6 7.4 2.6 -5.3 173261 1978 -9.0 -7.9 -3.8 3.3 12.1 15.8 19.5 18.8 11.8 6.3 -0.6 -6.0 173261 1979 -5.7 -8.0 1.0 4.7 11.7 16.3 20.4 17.4 13.3 7.7 3.9 -2.6 173261 1980 -7.1 -8.3 -2.6 5.6 10.7 15.0 18.5 19.1 12.4 6.3 0.2 -6.9 173261 1981 -9.6 -2.6 -0.8 5.1 11.9 15.8 19.3 18.2 13.1 6.4 2.2 -2.9 173261 1982 -9.7 -7.2 -1.7 3.7 11.6 15.3 20.0 16.9 14.4 7.9 3.8 -2.2 173261 1983 -6.2 -6.1 0.3 5.6 10.2 17.0 20.2 19.1 15.4 8.1 3.1 -5.5 173261 1984 -8.4 -2.1 -4.3 4.6 11.2 15.8 20.2 20.4 13.1 8.4 2.4 -3.4 173261 1985 -10.9 -5.0 -2.6 4.1 10.5 14.9 19.8 17.9 14.5 8.2 1.3 -7.4 173261 1986 -6.7 -8.1 -2.6 6.5 11.4 15.0 17.8 17.4 12.0 7.1 -0.6 -5.4 173261 1987 -7.6 -7.9 -0.7 6.5 11.1 16.1 18.9 17.7 13.8 7.7 0.5 -4.5 173261 1988 -7.0 -5.5 -2.6 4.6 11.5 16.3 20.1 19.9 13.1 6.1 3.5 -6.0 173261 1989 -6.7 -6.9 -3.4 2.9 12.9 16.7 19.2 17.7 13.6 7.7 0.1 -11.4 173261 1990 -5.0 -7.3 -2.3 4.3 10.1 16.9 20.3 20.3 13.9 9.5 2.7 -2.1 173261 1991 -7.9 -4.9 -0.6 5.3 13.0 17.7 19.6 19.5 13.2 8.0 2.1 -6.9 173261 1992 -7.6 -7.2 -3.6 3.4 11.4 16.7 17.4 18.6 14.5 6.7 0.5 -4.5 173261 1993 -7.5 -9.3 -3.1 4.9 11.6 16.0 19.0 19.5 14.2 5.1 1.7 -3.0