"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
194313	1970	 -6.5	 -1.5	  1.7	  9.0	 15.8	 19.6	 23.7	 21.9	 17.6	 12.3	  6.3	    
194313	1971	    	    	    	    	    	    	    	    	    	    	    	    
194313	1972	    	    	    	    	    	    	    	    	    	    	    	    
194313	1973	    	    	    	    	    	    	    	    	    	    	    	    
194313	1974	    	    	    	    	    	    	    	    	    	    	    	    
194313	1975	    	    	    	    	    	    	    	    	    	    	    	    
194313	1976	    	    	    	    	    	    	    	    	    	    	    	    
194313	1977	    	    	    	    	    	    	    	    	    	    	    	    
194313	1978	    	    	    	    	    	    	    	    	    	    	    	    
194313	1979	    	    	    	    	 13.3	    	    	    	 15.7	    	    	    
194313	1980	    	    	  0.2	    	    	 16.1	    	    	    	  8.8	    	    
194313	1981	    	    	    	    	 14.5	    	    	    	    	    	    	    
194313	1982	    	    	    	    	    	    	    	    	    	    	    	    
194313	1983	    	    	    	    	    	    	    	    	    	    	    	    
194313	1984	    	    	    	    	    	    	    	    	    	    	    	    
194313	1985	    	    	    	    	    	    	    	    	    	    	    	    
194313	1986	    	    	    	    	    	    	    	 20.0	 14.8	 10.3	  2.8	 -1.0
194313	1987	 -5.4	 -4.1	    	  8.1	 14.0	 19.1	 22.5	 19.5	 16.2	  9.1	  3.4	 -0.4
194313	1988	 -5.6	 -2.4	  2.2	  7.3	 12.8	    	    	 22.7	 15.9	  8.4	    	    
194313	1989	    	 -4.1	  0.1	  6.9	 14.7	 19.1	 22.3	 20.7	 16.8	 10.4	  4.0	 -8.8
194313	1990	 -0.7	 -1.7	  2.7	  8.2	 12.1	 19.3	 22.5	 21.1	 16.8	 12.5	  5.9	  1.6
194313	1991	 -5.0	 -0.8	  3.2	  9.3	 16.3	 19.2	 21.3	 21.7	 15.4	 11.1	  4.8	 -0.8
194313	1992	 -3.5	 -2.2	  0.1	  6.4	 13.1	 18.4	 20.2	 20.0	 16.4	  8.3	  3.1	 -1.8
194313	1993	 -3.1	 -7.0	 -0.8	  8.1	 14.9	 19.0	 22.3	 22.1	 16.6	  8.7	  4.0	 -1.3