"station_id" "year" "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul" "Aug" "Sep" "Oct" "Nov" "Dec" 191386 1970 191386 1971 191386 1972 19.0 17.2 10.2 6.0 3.6 191386 1973 -0.1 -0.4 4.7 7.5 11.1 17.0 19.4 20.6 17.0 12.7 6.7 4.4 191386 1974 1.3 -0.5 2.9 7.9 10.8 15.5 19.8 20.5 17.3 10.2 7.0 3.3 191386 1975 2.2 0.3 2.2 5.5 12.1 16.2 20.3 20.2 16.3 13.2 9.6 2.6 191386 1976 -1.6 1.9 3.6 8.8 12.4 17.3 20.0 19.6 16.9 10.8 4.5 -0.9 191386 1977 -4.2 -1.2 4.4 8.1 12.5 15.8 20.1 20.3 16.4 11.8 8.1 1.6 191386 1978 -1.0 -2.5 1.3 6.4 11.0 16.8 18.5 20.4 15.3 11.2 7.5 2.1 191386 1979 0.7 -4.7 3.7 6.8 13.2 15.9 19.7 18.8 16.5 11.3 9.3 3.5 191386 1980 -0.1 -2.0 2.3 7.7 12.0 15.8 20.5 21.1 17.7 11.2 5.6 -0.3 191386 1981 -4.9 1.7 2.7 8.4 11.6 17.6 20.9 19.5 16.6 10.7 6.9 2.0 191386 1982 -3.7 0.1 3.0 6.1 11.8 14.7 20.1 18.9 16.5 12.0 8.7 4.9 191386 1983 1.0 1.3 4.1 7.3 11.2 16.9 21.1 20.2 18.8 12.7 8.4 1.5 191386 1984 -0.3 2.9 0.7 6.5 12.6 17.2 19.6 21.0 16.1 12.8 7.5 4.8 191386 1985 -2.2 0.7 3.7 12.1 16.4 19.6 19.6 17.5 13.1 8.9 1.1 191386 1986 0.4 -0.6 3.6 7.6 16.4 19.6 191386 1987 0.3 -1.4 2.8 7.2 11.3 16.9 19.1 16.9 11.3 2.8 191386 1988 -1.4 0.8 3.1 7.2 11.5 16.0 20.1 21.2 16.7 10.4 7.9 1.3 191386 1989 1.3 -0.5 2.6 6.9 17.3 19.5 19.7 17.4 12.5 6.7 -3.9 191386 1990 2.5 1.4 3.3 7.3 11.1 16.1 19.7 21.1 17.1 13.9 7.7 4.8 191386 1991 0.6 1.6 4.4 8.2 13.9 17.9 20.8 16.6 12.9 7.9 2.9 191386 1992 0.4 1.6 5.6 10.7 16.7 18.5 16.3 11.2 2.9 191386 1993 0.8 -2.1 2.2 6.8 12.5 16.9 20.6 20.1 17.1 11.4 7.8 2.4