"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
199316	1970	 -7.4	 -3.2	  0.3	  7.3	 14.3	 17.9	 21.7	 20.8	 16.5	 10.8	  5.2	 -3.6
199316	1971	 -5.6	 -2.6	  1.6	  6.5	 12.6	 18.5	 21.3	 20.9	 18.1	 13.0	  3.4	  0.1
199316	1972	 -2.9	 -4.0	  0.5	  5.3	 13.5	 17.9	 22.0	 20.1	 16.3	  8.0	  3.1	 -0.4
199316	1973	 -1.6	 -2.9	  4.7	  9.4	 12.9	 20.4	 22.1	 22.5	 16.0	 10.3	  5.4	  1.5
199316	1974	 -2.2	 -3.8	  2.5	  9.0	 11.9	 17.7	 21.3	 20.6	 16.1	  7.3	  5.2	    
199316	1975	 -1.3	 -2.6	  0.3	  5.5	 15.6	 18.5	 22.5	 20.6	 14.6	 11.1	  7.2	 -1.8
199316	1976	 -5.7	  0.2	  2.9	 10.2	 13.3	 20.7	 20.8	 20.2	 14.9	  8.3	  2.5	 -4.9
199316	1977	 -8.0	 -3.6	  4.8	  8.9	 14.6	 17.6	 21.3	 20.8	 16.0	  9.9	  6.1	 -2.5
199316	1978	 -4.8	 -6.0	 -0.5	  6.6	 13.2	 18.4	 20.8	 20.7	 14.2	  9.1	  4.0	 -1.2
199316	1979	 -2.4	 -6.0	  3.6	  7.5	 15.0	 17.7	 22.4	 20.6	 15.5	 10.0	  7.2	  0.5
199316	1980	 -3.2	 -5.0	  1.2	  8.3	 13.5	 16.9	 22.3	 20.7	 16.0	  8.3	  3.3	 -3.3
199316	1981	 -7.4	  0.6	  2.3	  9.6	 14.2	 19.1	 21.3	 19.7	 14.5	  7.2	  3.5	 -2.6
199316	1982	 -6.8	 -2.4	  1.1	  6.7	 14.2	 16.5	 21.6	 19.3	 16.3	  9.2	  6.7	  1.7
199316	1983	 -3.2	 -1.4	  3.6	  8.0	 12.8	 19.4	 22.2	 20.7	 17.5	  9.6	  5.2	 -2.0
199316	1984	 -4.2	  0.9	 -0.8	  7.2	 12.7	 19.2	 21.1	 21.5	 14.1	 10.6	  4.4	  1.2
199316	1985	 -6.9	 -2.0	  3.3	  8.5	 14.3	 16.9	 21.6	 20.5	 16.8	 10.9	  6.0	 -2.8
199316	1986	 -1.7	 -3.2	  3.6	  9.2	 14.5	 17.5	 20.9	 19.3	 15.2	 10.4	  3.6	  0.3
199316	1987	 -4.0	 -2.5	  3.1	  8.1	 14.0	 19.5	 22.5	 20.0	 16.6	  9.4	  4.6	  0.2
199316	1988	 -4.3	 -1.2	  2.9	  7.4	 13.8	 18.4	 22.5	 22.4	 15.0	  7.9	  5.4	 -1.9
199316	1989	 -1.5	 -3.0	  1.7	  6.6	 14.5	 18.9	 21.0	 20.3	 16.4	 10.5	  4.7	 -7.8
199316	1990	  0.7	 -0.1	  3.3	  7.8	 12.0	 18.7	 21.3	 21.2	 15.6	 12.4	  6.3	  2.4
199316	1991	 -3.9	 -0.2	  3.8	  9.6	 16.4	 19.5	 21.4	 21.4	 15.2	 10.8	  5.2	  0.6
199316	1992	 -2.5	 -1.3	  1.0	  6.5	 13.5	 18.5	 20.3	 19.8	 16.5	  9.0	  4.0	 -0.9
199316	1993	 -1.8	 -4.8	  0.5	  8.3	 15.1	 19.4	 22.0	 22.6	 17.1	  9.3	  4.7	 -1.0