"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
173567	1970	    	    	    	    	    	    	    	    	    	    	    	    
173567	1971	    	    	    	    	    	    	    	    	    	    	    	    
173567	1972	    	    	    	    	    	    	    	    	    	    	    	    
173567	1973	    	    	    	    	    	    	    	    	    	    	    	    
173567	1974	    	    	    	    	    	    	    	    	    	    	    	    
173567	1975	    	    	    	    	    	    	    	    	    	    	    	    
173567	1976	    	    	    	    	    	    	    	    	    	    	    	    
173567	1977	    	    	    	    	    	    	    	    	    	    	    	    
173567	1978	    	    	    	    	    	    	    	    	    	    	  279	  432
173567	1979	  584	  203	    	  229	    	    	    	    	    	  102	    	  102
173567	1980	   76	  279	  330	    	    	    	    	    	    	    	  229	  254
173567	1981	  356	  127	  102	    	    	    	    	    	    	    	   51	  660
173567	1982	  584	  457	  305	  203	    	    	    	    	    	    	  127	   51
173567	1983	  254	  305	   76	   51	    	    	    	    	    	    	  127	    
173567	1984	  330	  305	  457	    	    	    	    	    	    	    	    	  610
173567	1985	    	  127	  152	  254	    	    	    	    	    	    	  127	  406
173567	1986	  457	  254	  229	   25	    	    	    	    	    	    	   64	    
173567	1987	  787	   74	  305	  102	    	    	    	    	    	    	  241	  406
173567	1988	  521	  559	   58	  152	    	    	    	    	    	    	    	  267
173567	1989	  318	  305	  114	   25	    	    	    	    	    	    	  279	  554
173567	1990	  737	  457	  152	    	    	    	    	    	    	    	    	  127
173567	1991	  617	  127	  330	    	    	    	    	    	    	    	    	  483
173567	1992	   64	  528	   64	  178	    	    	    	    	    	    	    	   58
173567	1993	  155	  991	  808	  254	    	    	    	    	    	    	   13	   43