"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
274475	1970	 -9.3	 -5.5	 -0.9	  6.5	 14.3	 18.4	 21.7	 20.7	 15.3	 10.2	  4.1	 -6.6
274475	1971	 -8.4	 -4.4	 -1.4	  4.8	 12.5	 19.1	 21.3	 19.9	 16.6	 12.0	  1.0	 -3.7
274475	1972	 -6.1	 -6.4	 -2.4	  3.8	 13.6	 17.3	 21.1	 18.9	 15.0	  6.7	  1.0	 -4.1
274475	1973	 -4.6	 -5.3	  2.9	  7.7	 12.1	 18.9	 22.3	 22.3	 14.9	  9.9	  2.7	 -1.3
274475	1974	 -4.5	 -5.8	 -0.9	  7.8	 10.9	 18.3	 20.9	 21.1	 14.8	  6.4	  2.9	 -1.5
274475	1975	 -4.2	 -4.4	 -1.6	  4.2	 16.4	 18.6	 22.7	 19.9	 14.0	  9.7	  6.1	 -4.9
274475	1976	 -8.4	 -3.5	    	  8.8	 12.9	 21.0	 19.9	 19.4	 14.5	  7.5	  0.8	 -7.4
274475	1977	 -9.2	 -5.5	  3.0	  7.4	 15.3	 17.3	 20.7	 20.0	 14.8	  8.9	  4.3	 -4.5
274475	1978	 -7.4	 -7.7	 -1.8	  4.7	 14.7	 18.2	 21.1	 19.9	 13.7	  8.1	  2.6	 -4.1
274475	1979	 -5.7	 -7.9	  2.0	  6.6	 13.9	 18.5	 21.8	 19.3	 14.9	  8.7	  5.7	 -2.0
274475	1980	 -5.5	 -6.9	 -0.5	  6.8	 13.6	 16.8	 21.6	 20.8	 15.2	  7.7	  1.3	 -6.4
274475	1981	 -8.8	 -0.8	  1.1	  8.0	 14.6	 19.0	 21.2	 19.6	 14.8	  7.5	    	 -2.9
274475	1982	 -9.3	 -6.4	 -1.0	  5.4	 14.4	 16.4	    	    	    	    	    	    
274475	1983	    	    	    	    	    	    	    	    	    	    	    	    
274475	1984	    	    	    	    	    	    	    	    	    	    	    	    
274475	1985	    	    	    	    	    	    	    	    	    	    	    	    
274475	1986	    	    	    	    	    	    	    	    	    	    	    	    
274475	1987	    	    	    	    	    	    	    	    	    	    	    	    
274475	1988	    	    	    	    	    	    	    	    	    	    	    	    
274475	1989	    	    	    	    	    	    	    	    	    	    	    	    
274475	1990	    	    	    	    	    	    	    	    	    	    	    	    
274475	1991	    	    	    	    	    	    	    	    	    	    	    	    
274475	1992	    	    	    	    	    	    	    	    	    	    	    	    
274475	1993