"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
270690	1970	    	    	    	    	    	    	    	    	    	    	    	 -8.1
270690	1971	 -8.3	 -5.1	 -3.9	  2.9	 10.5	 16.0	 18.1	 17.6	 14.6	 10.2	 -1.1	 -5.5
270690	1972	 -5.6	 -7.3	 -3.0	  0.2	 10.5	 16.4	 17.4	 16.1	 11.8	  3.6	 -1.8	 -6.3
270690	1973	 -6.0	 -5.2	  0.5	    	    	    	    	    	    	  7.0	  0.8	 -3.4
270690	1974	 -5.8	 -8.1	 -3.0	  4.6	  8.9	    	    	    	    	  3.9	  1.6	 -4.1
270690	1975	 -5.3	 -5.3	 -3.6	  1.6	 14.2	 16.8	 21.0	 18.9	 12.7	  8.6	  3.9	 -6.5
270690	1976	 -7.3	 -5.7	 -2.7	  6.3	 10.5	 18.5	 18.6	 16.6	 12.6	  5.9	 -1.1	 -8.7
270690	1977	-10.4	 -7.4	  1.5	  4.8	 13.2	 15.7	 18.2	 16.3	 12.3	  6.8	  2.1	 -6.1
270690	1978	 -9.3	 -8.4	 -4.0	  2.5	 12.4	 14.9	 19.6	 17.8	 11.0	  5.7	  0.4	 -5.5
270690	1979	 -6.4	 -8.6	  0.8	  4.9	 12.3	 16.5	 19.9	 17.2	 12.5	  7.4	  4.3	 -3.6
270690	1980	 -7.2	 -8.7	 -2.4	  5.5	 11.8	 15.3	 19.8	 18.4	 13.4	  6.2	 -0.6	 -6.8
270690	1981	 -8.8	 -1.9	 -1.2	  6.3	 12.8	 17.1	 19.9	 17.5	 13.6	  6.4	  1.8	 -4.4
270690	1982	 -9.6	 -6.9	 -2.1	  3.4	 12.7	 15.1	 19.5	 16.7	 14.4	  7.7	  3.1	 -1.7
270690	1983	 -6.5	 -5.1	 -0.5	  5.3	 10.7	 17.9	 20.0	 19.0	 15.1	  7.9	  1.7	 -5.6
270690	1984	 -7.7	 -2.0	 -4.5	  5.8	 10.7	 17.2	 19.5	 20.5	 12.6	  8.8	  1.0	 -2.7
270690	1985	 -9.9	 -5.1	 -1.7	  4.9	 11.6	 15.4	 19.6	 17.6	 14.1	  8.6	  2.1	 -6.9
270690	1986	 -6.4	 -7.6	 -0.9	  8.2	 13.2	 15.1	 18.1	 17.4	 12.1	  7.6	 -0.2	 -4.5
270690	1987	 -8.0	 -8.3	 -0.2	  7.6	 11.8	 17.3	 20.0	 17.2	 13.6	  6.7	  0.9	 -3.1
270690	1988	 -6.5	 -6.6	 -2.5	  5.6	 12.7	 15.7	 18.7	 19.9	 13.0	  5.7	  1.8	 -6.5
270690	1989	 -5.4	 -6.9	 -3.4	  3.5	 13.8	 17.2	 19.6	 17.9	 14.2	  8.0	  0.7	-11.1
270690	1990	 -3.4	 -5.2	 -0.5	  6.0	 10.7	 17.2	 19.4	 19.4	 13.7	  9.8	  2.2	 -2.9
270690	1991	 -7.3	 -4.7	 -0.3	  7.1	 13.5	 17.0	 19.1	 19.2	 12.4	  8.8	  2.3	 -5.2
270690	1992	 -7.7	 -6.4	 -4.3	  3.5	 11.7	 16.2	 17.4	 17.9	 13.7	  5.8	  0.4	 -4.1
270690	1993	 -6.6	 -8.7	 -2.8	  5.9	 12.3	 16.5	 19.5	 19.3	 13.3	  5.7	  1.5	 -3.9