"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
271001	1970	    	    	    	    	    	    	    	    	    	    	    	    
271001	1971	    	    	    	    	    	    	    	    	    	    	    	    
271001	1972	    	    	    	    	    	    	    	    	    	    	    	    
271001	1973	    	    	    	    	    	    	    	    	    	    	    	    
271001	1974	    	    	    	    	    	    	    	    	    	    	    	    
271001	1975	    	    	    	    	    	    	    	    	    	    	    	    
271001	1976	    	    	    	    	    	    	    	    	    	    	    	    
271001	1977	    	    	    	    	    	    	    	    	    	    	    	    
271001	1978	    	    	    	    	    	    	    	    	    	    	    	    
271001	1979	    	    	    	    	    	    	    	    	    	    	    	    
271001	1980	    	    	    	    	    	    	    	    	    	    	    	    
271001	1981	    	    	    	    	    	    	    	    	    	    	    	    
271001	1982	    	    	    	    	    	    	    	    	    	    	    	    
271001	1983	    	    	    	    	    	    	    	    	    	    	   64	  460
271001	1984	  310	  145	  582	    	    	    	    	    	    	    	    	  650
271001	1985	  211	  345	  259	  147	    	    	    	    	    	    	  122	  447
271001	1986	  401	  483	  152	    	    	    	    	    	    	    	    	  300
271001	1987	 1293	   46	  170	  300	    	    	    	    	    	    	  109	  335
271001	1988	  455	  561	   84	    	    	    	    	    	    	    	    5	  137
271001	1989	  147	  330	  249	   13	    	    	    	    	    	    	   81	  516
271001	1990	  538	  437	   41	    	    	    	    	    	    	   13	    	  386
271001	1991	  330	    	    	    	    	    	    	    	    	    	    	    
271001	1992	    	    	    	    	    	    	    	    	    	    	    	    
271001	1993