"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
172238	1970	    	    	    	    	    	    	    	    	    	    	 -2.2	 -6.6
172238	1971	 -6.4	 -5.1	 -2.1	  3.9	 11.1	 17.5	 19.8	 18.5	 15.5	 10.8	 -0.2	 -4.4
172238	1972	 -5.6	 -5.9	 -2.4	  2.8	 12.2	 16.7	 20.0	 17.3	 13.3	  5.6	 -0.3	 -5.5
172238	1973	 -4.1	 -5.0	  1.8	  6.8	 10.5	 17.7	 20.8	 21.2	 13.5	  8.0	  1.6	 -1.5
172238	1974	 -4.4	 -6.4	 -1.5	  5.4	  9.6	    	 19.1	 19.0	 13.7	  4.5	  1.8	 -3.1
172238	1975	 -4.8	 -3.6	 -2.8	  2.8	 14.7	 16.9	 21.1	 18.9	 12.6	  8.6	  4.3	 -5.1
172238	1976	 -5.8	 -4.2	 -1.2	  7.6	 11.4	 19.8	 19.0	 18.2	 13.4	  6.0	    	 -7.2
172238	1977	 -8.1	 -5.9	  2.4	  6.1	 13.0	 16.4	 19.3	 18.8	 13.4	  7.7	  3.7	 -5.0
172238	1978	 -7.6	 -5.8	 -2.5	  3.7	 12.8	 16.8	 19.8	 18.9	 12.1	  7.2	  0.9	 -5.2
172238	1979	 -5.2	 -4.8	  1.4	  5.3	 12.4	 17.5	 21.9	 18.2	 13.4	  8.2	  4.7	 -2.4
172238	1980	 -6.1	 -6.8	 -0.5	  6.3	 11.4	 15.4	 20.0	 19.2	 13.7	  6.3	  2.0	    
172238	1981	    	    	    	    	    	    	    	 18.0	 13.8	  6.3	  1.6	 -4.0
172238	1982	 -8.6	 -6.0	 -1.8	  4.2	 12.4	 14.6	 19.4	 17.0	 14.9	  7.6	  3.8	 -1.3
172238	1983	 -5.4	 -3.9	  1.0	  6.0	 11.0	 16.2	 20.8	 19.3	 15.9	  7.8	  2.5	 -4.7
172238	1984	 -6.9	 -1.3	 -3.2	  5.9	 11.0	 17.2	 19.9	 20.4	 12.8	  8.6	  1.9	 -2.6
172238	1985	 -8.8	 -4.3	  0.3	  5.7	 12.1	 15.5	 20.2	 18.3	 14.2	  8.5	  2.2	 -6.7
172238	1986	 -5.0	 -6.8	 -0.3	  8.2	 12.6	 15.3	 18.3	 17.5	 11.9	  7.2	 -0.1	 -5.1
172238	1987	 -7.7	 -6.4	  0.1	  6.9	 11.5	 16.7	 19.9	 17.2	 13.8	  7.1	  1.4	 -3.2
172238	1988	 -6.4	 -5.3	 -1.9	  5.4	 12.4	 16.3	 20.7	 20.2	 13.0	  6.1	  2.3	 -5.8
172238	1989	 -5.9	 -6.6	 -2.2	  3.5	 12.9	 16.7	 19.4	 18.2	 14.5	  7.9	  0.6	 -9.3
172238	1990	 -4.4	 -4.6	 -0.3	  6.0	 10.3	 16.9	 19.6	 19.5	 13.6	  9.5	  3.0	 -2.2
172238	1991	 -7.0	 -4.7	  0.2	  7.1	 13.7	 17.2	 19.4	 19.6	 12.7	  8.9	  2.5	 -4.9
172238	1992	 -6.9	 -4.7	 -3.0	  4.1	 11.4	 16.5	 17.4	 17.7	 13.7	  5.8	  0.3	 -3.9
172238	1993	 -6.5	 -8.2	 -2.8	  5.4	 12.1	 16.7	 19.8	 19.0	 13.5	  5.7	  1.4	 -3.2