"station_id" "year" "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul" "Aug" "Sep" "Oct" "Nov" "Dec" 273626 1970 273626 1971 273626 1972 273626 1973 22.2 15.8 10.9 4.5 1.6 273626 1974 -2.4 -3.1 1.9 21.2 21.1 16.3 8.3 5.5 0.3 273626 1975 -1.3 -2.3 1.1 5.8 15.1 18.5 22.9 20.8 15.4 11.5 7.8 -1.8 273626 1976 -5.5 2.6 9.5 13.6 21.2 20.2 19.8 15.4 8.7 2.5 -5.2 273626 1977 -7.4 -3.2 4.1 8.4 15.0 17.1 21.0 20.0 15.4 10.1 5.5 -2.9 273626 1978 -5.2 -5.7 -0.2 6.2 13.7 18.0 20.5 20.0 13.7 9.6 4.1 -1.9 273626 1979 -2.5 -6.3 4.3 6.5 14.3 17.9 21.7 19.6 15.9 10.5 7.6 0.3 273626 1980 -3.1 -4.6 1.5 7.7 13.5 17.1 22.2 21.1 17.1 8.5 3.1 -3.3 273626 1981 -7.0 0.9 2.6 9.8 14.2 19.1 21.0 19.2 15.1 8.6 4.3 -1.9 273626 1982 -7.1 -3.6 1.2 6.8 13.0 15.4 20.8 18.4 15.4 9.5 6.2 1.8 273626 1983 -2.7 -1.7 2.9 7.5 11.9 18.6 21.3 20.2 17.4 10.1 5.4 -1.8 273626 1984 -4.8 1.1 -1.0 6.9 13.0 19.3 21.8 20.9 14.7 10.4 4.5 1.2 273626 1985 -7.1 -1.2 3.0 7.7 13.9 17.0 21.3 19.2 16.1 10.6 4.7 -3.4 273626 1986 -2.7 -3.9 3.2 7.6 12.8 17.5 19.9 18.6 14.3 9.3 3.3 -0.4 273626 1987 -4.2 -3.7 2.0 7.4 13.4 18.2 20.6 18.9 15.9 9.2 3.9 0.2 273626 1988 -3.5 -1.8 2.4 7.0 13.0 18.1 22.2 21.8 15.0 8.5 5.9 -2.0 273626 1989 -1.4 -2.5 1.6 5.7 14.4 18.1 20.3 19.6 15.3 9.3 3.1 -8.5 273626 1990 -0.9 -1.6 2.7 7.2 11.3 17.6 20.7 20.5 16.5 12.3 6.4 1.9 273626 1991 -3.8 -0.1 3.5 9.6 16.2 19.0 21.4 21.6 15.2 11.6 5.2 -1.3 273626 1992 -3.3 -1.9 0.2 6.9 12.3 18.7 19.2 19.8 16.3 9.0 3.2 -1.3 273626 1993 -3.3 -5.9 7.7 14.3 18.7 21.8 20.9 16.8 9.3 5.0 -0.8