"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
273660	1970	    	    	    	    	    	    	    	    	    	    	    	    
273660	1971	    	    	    	    	    	    	    	    	    	    	    	    
273660	1972	    	    	    	    	    	    	    	    	    	    	    	    
273660	1973	    	    	    	    	    	    	    	    	    	    	    	    
273660	1974	    	    	    	    	    	    	    	    	    	    	    	    
273660	1975	    	    	    	    	    	    	    	    	    	    	    	    
273660	1976	    	    	    	    	    	    	    	    	    	    	    	    
273660	1977	    	    	    	    	    	    	    	    	    	    	    	    
273660	1978	    	    	    	    	    	    	    	    	    	    	    	    
273660	1979	    	    	    	    	 13.8	    	    	    	 16.1	    	    	    
273660	1980	    	    	    	    	 13.3	    	 21.8	    	    	    	  1.9	    
273660	1981	    	    	    	    	    	    	    	    	    	    	    	    
273660	1982	    	    	    	    	    	    	    	    	    	    	    	    
273660	1983	    	    	    	    	    	    	    	    	    	    	    	    
273660	1984	    	    	    	    	    	    	    	    	    	    	    	    
273660	1985	    	    	    	    	    	    	    	    	    	    	    	    
273660	1986	    	    	    	    	    	    	    	    	    	    	    	    
273660	1987	    	    	    	    	    	    	    	    	    	    	    	    
273660	1988	    	    	    	    	    	    	    	    	    	    	    	    
273660	1989	    	    	    	    	    	    	    	    	    	    	    	    
273660	1990	    	    	    	    	    	    	    	    	    	    	    	    
273660	1991	    	    	    	    	    	    	    	    	    	    	    	    
273660	1992	    	    	    	    	    	    	    	    	    	    	    	    
273660	1993