"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
170398	1970	    	    	    	    	    	    	    	    	    	    	    	    
170398	1971	    	    	    	    	    	    	    	    	    	    	    	    
170398	1972	    	    	    	    	    	    	    	    	    	    	    	    
170398	1973	    	    	    	    	    	    	    	    	    	    	    	    
170398	1974	    	    	    	    	    	    	    	    	    	    	    	    
170398	1975	    	    	    	    	    	    	    	    	    	    	    	    
170398	1976	    	    	    	    	    	    	    	    	    	    	    	    
170398	1977	    	    	    	    	    	    	    	    	    	    	    	    
170398	1978	    	    	    	    	    	    	    	    	    	    	    	    
170398	1979	    	    	    	    	    	    	    	    	    	    	    	    
170398	1980	    	    	    	    	    	    	    	    	    	    	    	    
170398	1981	    	    	    	    	    	    	    	    	    	    	    	    
170398	1982	    	    	    	    	    	    	    	    	    	    	    	    
170398	1983	    	    	    	    	    	    	    	    	    	    	    	    
170398	1984	    	    	    	    	    	    	    	    	    	    	    	    
170398	1985	    	    	    	    	    	    	    	    	    	    	    	    
170398	1986	    	    	    	    	    	    	    	    	    	    	    	    
170398	1987	    	    	    	    	    	    	    	    	    	    	    	    
170398	1988	    	    	    	    	    	    	    	    	    	    	    	    
170398	1989	    	    	    	    	    	    	    	    	    	    	    	    
170398	1990	    	    	    	    	    	    	    	    	    	    	   15	  401
170398	1991	  820	  221	  472	   76	    	    	    	    	    	    	    8	  701
170398	1992	  114	  757	  104	  127	    	    	    	    	    	    	   58	  229
170398	1993	  114	 1092	 1074	  249	    	    	    	    	    	    	  109	  150