"station_id" "year" "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul" "Aug" "Sep" "Oct" "Nov" "Dec" 194105 1970 137 325 444 760 194105 1971 312 229 38 203 277 427 194105 1972 168 902 508 46 381 194105 1973 292 168 25 25 194105 1974 345 297 13 127 114 140 194105 1975 470 376 89 13 102 495 194105 1976 165 51 439 76 533 194105 1977 686 152 338 38 25 292 194105 1978 876 940 305 89 140 194105 1979 419 114 51 194105 1980 13 165 152 203 190 194105 1981 241 114 711 194105 1982 419 173 127 279 13 194105 1983 394 632 178 194105 1984 597 533 152 194105 1985 152 267 152 241 152 194105 1986 76 279 76 102 194105 1987 1041 25 102 203 76 194105 1988 419 330 51 194105 1989 107 152 194105 1990 127 194105 1991 305 48 2 216 194105 1992 89 170 279 194105 1993 318 432 737 117