"station_id" "year" "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul" "Aug" "Sep" "Oct" "Nov" "Dec" 275995 1970 275995 1971 275995 1972 275995 1973 275995 1974 -1.6 5.9 10.2 17.1 19.7 19.1 13.4 5.1 2.6 -2.5 275995 1975 -4.5 -4.1 -1.8 3.3 15.5 17.6 21.8 19.7 13.2 9.1 4.7 -5.4 275995 1976 -7.4 -4.2 -1.5 8.1 11.6 20.3 19.3 18.5 13.6 6.8 0.7 -8.0 275995 1977 -8.7 -5.6 2.7 6.4 14.2 16.5 19.7 18.7 13.6 8.3 3.7 -5.2 275995 1978 -7.8 -7.0 -2.4 4.4 13.8 17.4 20.3 19.5 12.6 7.2 1.1 -4.6 275995 1979 -5.6 -6.8 1.8 5.6 13.3 18.4 21.3 18.3 14.0 8.3 4.9 -2.6 275995 1980 -5.9 -7.0 -1.4 6.3 13.0 16.5 21.0 20.3 14.4 6.9 1.0 -6.1 275995 1981 -8.6 -2.1 1.1 7.3 14.1 18.2 20.8 18.8 14.1 6.7 2.5 -2.9 275995 1982 -9.4 -6.5 -1.7 4.3 13.9 15.7 20.5 17.7 15.1 8.3 3.9 -0.8 275995 1983 -5.8 -3.6 1.5 6.5 11.4 18.8 21.5 20.1 16.6 8.4 3.0 -4.8 275995 1984 -7.2 -1.0 -3.0 6.9 11.8 18.1 20.2 21.2 9.3 2.6 -2.0 275995 1985 -9.4 -4.2 6.2 12.5 16.5 21.0 19.0 15.2 8.7 2.8 -6.3 275995 1986 -5.4 -5.9 8.8 13.6 16.1 19.3 18.4 12.7 7.9 0.5 -3.7 275995 1987 -6.5 -4.8 1.1 8.1 12.5 18.0 21.2 18.4 14.6 7.7 1.8 -1.6 275995 1988 -6.8 -4.9 -0.6 6.1 13.5 17.6 21.9 21.3 14.2 6.7 3.2 -5.5 275995 1989 -5.3 -5.9 -1.6 4.4 14.4 18.1 21.2 19.3 15.6 9.0 1.2 -10.1 275995 1990 -3.4 -4.3 0.2 6.5 11.4 18.0 21.0 21.0 14.8 10.4 3.9 -2.0 275995 1991 -6.4 -3.7 1.1 7.7 14.9 19.1 20.8 20.5 13.7 9.6 3.6 -4.2 275995 1992 -6.6 -4.4 -2.5 5.0 12.9 18.0 18.8 18.8 14.9 6.7 1.2 -3.1 275995 1993 -5.3 -8.2 -1.4 6.7 13.3 18.2 21.7 20.5 14.7 6.4 2.1 -2.4