"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
274480	1970	    	    	    	    	    	    	    	    	    	    	  5.2	    
274480	1971	    	    	    	    	    	    	    	    	    	    	 -1.4	    
274480	1972	    	    	    	    	    	    	    	    	    	    	    	    
274480	1973	    	    	    	    	    	    	    	    	    	    	    	 -1.0
274480	1974	    	    	    	    	    	    	    	    	    	    	    	    
274480	1975	    	    	    	    	    	    	    	    	    	    	    	    
274480	1976	    	    	    	    	    	    	    	    	 15.0	  7.9	    	 -7.2
274480	1977	    	    	  2.4	  6.9	 14.4	    	    	    	    	    	    	    
274480	1978	    	    	    	  4.9	    	    	    	    	    	    	    	    
274480	1979	    	    	    	    	    	    	    	    	 15.2	    	    	    
274480	1980	    	    	    	    	    	 17.1	 21.7	    	    	  8.4	    	    
274480	1981	    	    	    	    	    	    	    	    	    	    	    	    
274480	1982	    	    	    	    	    	    	    	    	    	    	    	    
274480	1983	    	    	    	    	 11.8	 19.0	 22.0	 20.9	 17.8	  9.6	  4.2	 -4.4
274480	1984	 -7.0	 -1.4	 -2.6	  7.1	 12.3	 18.5	 21.6	 21.7	 14.7	 10.3	  3.8	 -0.5
274480	1985	 -8.3	 -3.8	  0.7	  6.8	 13.1	 17.6	 22.3	 20.5	 16.5	 10.2	  3.9	 -4.9
274480	1986	 -5.4	 -6.0	  0.6	  8.6	 13.9	 16.4	 19.8	 19.4	 14.1	  9.7	  1.4	 -2.2
274480	1987	 -5.7	 -4.8	  0.8	  8.0	 14.4	 18.8	 22.3	 20.1	 16.0	  9.3	  2.8	 -0.9
274480	1988	 -6.5	 -4.5	  0.3	  6.9	 13.8	 18.2	 22.7	 22.1	 15.0	  7.5	  3.8	 -4.7
274480	1989	 -4.6	 -5.1	 -0.9	  4.7	 14.6	 18.4	 21.4	 20.1	 16.3	 10.0	  2.4	-10.5
274480	1990	 -2.9	 -4.6	  0.8	  7.3	 11.7	 19.0	 21.8	 21.7	 16.1	 11.7	  4.2	 -1.0
274480	1991	 -6.3	 -3.1	  1.4	  8.8	 15.9	 19.6	 21.6	 21.4	 15.4	 10.7	  4.5	 -3.1
274480	1992	 -5.9	 -4.3	 -1.7	  5.2	 13.3	 17.9	 19.5	 19.6	 16.0	  7.8	  2.2	 -2.8
274480	1993	 -4.9	 -7.8	 -1.3	  7.3	 14.1	 18.4	 21.9	 21.2	 15.6	  8.0	  3.5	 -1.8