"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
176881	1970	    	    	    	    	    	    	    	    	    	    	    	    
176881	1971	    	    	    	    	    	    	    	    	    	    	    	    
176881	1972	    	    	    	    	    	    	    	    	    	    	    	    
176881	1973	    	    	    	    	    	    	    	    	    	    	    	    
176881	1974	    	    	    	    	    	    	    	    	    	    	    	    
176881	1975	    	    	    	    	    	    	    	    	    	    	    	    
176881	1976	    	    	    	    	    	    	    	    	    	    	    	    
176881	1977	    	    	    	    	    	    	    	    	    	    	    	    
176881	1978	    	    	    	    	    	    	    	    	    	    	    	    
176881	1979	    	    	    	    	    	    	    	    	    	    	    	    
176881	1980	    	    	    	    	    	    	    	    	    	    	    	    
176881	1981	    	    	    	    	    	    	    	    	    	    	    	    
176881	1982	    	    	    	    	    	    	    	    	    	    	    	    
176881	1983	    	    	    	    	    	    	    	    	    	    	    	    
176881	1984	    	    	    	    	    	    	    	    	    	    	    	    
176881	1985	    	    	    	    	    	    	    	    	    	    	    	    
176881	1986	    	    	    	    	    	    	    	    	    	    	    	    
176881	1987	    	    	    	    	    	    	    	    	    	    	    	    
176881	1988	    	    	    	    	    	    	    	    	    	    	    	    
176881	1989	    	    	    	    	    	    	    	    	    	    	  307	  439
176881	1990	  549	  627	   81	    	    	    	    	    	    	    	    	   38
176881	1991	  241	  114	  203	    	    	    	    	    	    	    	    	  348
176881	1992	    	  450	   25	  269	    	    	    	    	    	    	   76	   51
176881	1993	  406	  592	  686	  178	    	    	    	    	    	    	    	  152