"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
171833	1970	    	    	    	    	    	    	    	    	    	    	    	    
171833	1971	    	    	    	    	    	    	    	    	    	    	    	    
171833	1972	    	    	    	    	    	    	    	    	    	    	    	    
171833	1973	    	    	    	    	    	    	    	    	    	    	    	    
171833	1974	    	    	    	    	    	    	    	    	    	    	    	    
171833	1975	    	    	    	    	    	    	    	    	    	    	    	    
171833	1976	    	    	    	    	    	    	    	    	    	    	    	    
171833	1977	    	    	    	    	    	    	    	    	    	    	    	    
171833	1978	    	    	    	    	    	    	    	    	    	    	  203	  554
171833	1979	  559	    	    	    	    	    	    	    	    	    	    	    
171833	1980	    	    	    	    	    	    	    	    	    	    	    	    
171833	1981	    	    	    	    	    	    	    	    	    	    	    	    
171833	1982	    	    	    	    	    	    	    	    	    	    	    	    
171833	1983	    	    	    	    	    	    	    	    	    	    	    	    
171833	1984	    	    	    	    	    	    	    	    	    	    	    	    
171833	1985	    	    	    	    	    	    	    	    	    	    	    	    
171833	1986	    	    	    	    	    	    	    	    	    	    	    	    
171833	1987	    	    	    	    	    	    	    	    	    	    	    	    
171833	1988	    	    	    	    	    	    	    	    	    	   20	   13	  165
171833	1989	  417	  442	  620	  554	    	    	    	    	    	    	  488	  663
171833	1990	  632	  340	   84	    	    8	    	    	    	    	    	   25	  244
171833	1991	  826	  155	  434	   38	    	    	    	    	    	    	   18	  693
171833	1992	  178	 1107	    	  127	    	    	    	    	    	   13	   51	  254
171833	1993	  127	  952	  965	  203	    	    	    	    	    	    	    	  127