"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
199893	1970	 -3.5	  1.0	  2.7	  8.3	 13.7	 17.6	 21.8	 22.2	 18.1	 14.1	  9.0	  1.5
199893	1971	 -2.3	  0.2	  3.3	  6.5	 12.4	 18.0	 22.0	 22.1	 20.5	 16.0	  7.4	  3.5
199893	1972	  1.9	 -0.2	  2.8	  6.1	 12.8	 17.1	 21.0	 21.4	 18.5	 11.6	  6.7	  3.8
199893	1973	  1.1	  0.1	  6.0	  8.8	 12.7	 19.3	 21.7	 22.6	 19.1	 14.1	  7.9	  5.5
199893	1974	  1.8	 -0.5	  4.4	  8.8	 12.4	 17.7	 21.8	 22.5	 18.8	 11.9	  8.6	  3.8
199893	1975	  3.0	  0.6	  3.9	  6.1	 13.9	 18.4	 21.9	    	    	    	    	    
199893	1976	    	    	    	    	    	    	    	    	    	    	    	    
199893	1977	    	    	    	    	    	    	    	    	    	    	    	    
199893	1978	    	    	    	    	    	    	    	    	    	    	    	    
199893	1979	    	    	    	    	    	    	    	    	    	    	    	    
199893	1980	    	    	    	    	    	    	    	    	    	    	    	    
199893	1981	    	    	    	    	    	    	    	    	    	    	    	    
199893	1982	    	    	    	    	    	    	    	    	    	    	    	    
199893	1983	    	    	    	    	    	    	    	    	    	    	    	    
199893	1984	    	    	    	    	    	    	    	    	    	    	    	    
199893	1985	    	    	    	    	    	    	    	    	    	    	    	    
199893	1986	    	    	    	    	    	    	    	    	    	    	    	    
199893	1987	    	    	    	    	    	    	    	    	    	    	    	    
199893	1988	    	    	    	    	    	    	    	    	    	    	    	    
199893	1989	    	    	    	    	    	    	    	    	    	    	    	    
199893	1990	    	    	    	    	    	    	    	    	    	    	    	    
199893	1991	    	    	    	    	    	    	    	    	    	    	    	    
199893	1992	    	    	    	    	    	    	    	    	    	    	    	    
199893	1993