"station_id" "year" "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul" "Aug" "Sep" "Oct" "Nov" "Dec" 174183 1970 -9.9 -4.9 -1.1 4.6 10.4 15.3 18.9 18.6 13.8 9.3 3.5 -7.3 174183 1971 -7.6 -5.2 -1.5 4.5 10.8 15.1 18.9 18.3 15.2 10.1 1.2 -4.3 174183 1972 -5.2 -6.5 -3.9 2.5 10.4 13.6 17.5 17.6 14.0 6.3 0.5 -6.3 174183 1973 -5.0 -5.9 0.9 5.5 8.8 15.5 19.3 19.4 13.2 8.5 2.0 174183 1974 -5.6 -6.6 -1.9 4.9 8.4 15.1 17.1 18.6 13.1 4.9 2.8 -2.9 174183 1975 -5.3 -5.9 -2.3 3.3 11.3 15.1 18.4 18.2 13.4 8.5 4.7 -5.0 174183 1976 -5.8 -4.3 -2.3 6.1 10.4 17.1 17.6 13.8 7.1 2.3 -6.5 174183 1977 -9.2 -6.9 1.8 4.6 11.1 13.6 18.5 17.4 12.8 8.4 4.0 -4.1 174183 1978 -7.6 -7.3 -3.2 4.2 11.3 14.5 18.7 18.1 12.2 7.6 0.5 -4.1 174183 1979 -4.9 -7.2 1.8 5.0 11.4 15.3 18.6 16.7 13.6 7.9 4.7 -1.6 174183 1980 -5.8 -7.6 -1.7 5.8 10.6 14.5 18.0 19.0 12.8 6.9 1.2 -5.7 174183 1981 -9.1 -1.5 0.2 5.5 11.4 15.3 18.3 17.3 13.8 7.5 2.7 -2.1 174183 1982 -9.0 -6.8 -1.4 3.6 10.8 13.9 18.5 16.0 14.3 8.1 4.6 -1.2 174183 1983 -5.0 -4.8 0.4 5.3 9.6 16.2 18.7 18.2 15.5 8.5 3.8 -4.2 174183 1984 -7.3 -1.1 -4.0 4.9 10.2 14.9 18.7 19.2 13.0 8.7 3.4 -1.3 174183 1985 -10.2 -3.8 -0.8 4.8 10.5 14.4 18.3 17.5 14.4 8.6 2.4 -6.0 174183 1986 -4.5 -6.7 -0.9 6.6 10.4 14.4 17.1 16.7 12.0 7.7 1.2 -3.6 174183 1987 -7.3 -7.0 -0.7 6.3 10.3 15.4 17.5 17.4 13.6 8.3 1.8 -3.4 174183 1988 -6.1 -4.8 -1.4 4.7 10.6 15.4 18.0 13.1 6.7 3.9 -5.2 174183 1989 -5.4 -6.5 -2.4 3.5 11.7 15.7 17.8 17.1 13.7 8.6 1.7 -11.1 174183 1990 -2.8 -5.6 -1.2 4.7 9.3 14.8 19.3 19.3 13.5 10.2 3.4 -0.6 174183 1991 -7.2 -4.2 0.4 5.4 12.3 16.5 19.3 19.2 13.4 8.9 3.2 -5.1 174183 1992 -6.5 -6.0 -3.1 2.8 9.8 15.5 16.6 17.5 14.0 6.9 1.5 -3.1 174183 1993 -6.5 -8.8 -2.6 5.0 11.0 15.1 17.9 18.2 13.5 6.1 2.7 -1.9