"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
170177	1970	    	    	    	    	    	    	    	    	    	    	    	    
170177	1971	    	    	    	    	    	    	    	    	    	    	    	    
170177	1972	    	    	    	    	    	    	    	    	    	    	    	    
170177	1973	    	    	    	    	    	    	    	    	    	    	    	    
170177	1974	    	    	    	    	    	    	    	    	    	    	    	    
170177	1975	    	    	    	    	    	    	    	    	    	    	    	    
170177	1976	    	    	    	    	    	    	    	    	    	    	    	    
170177	1977	    	    	    	    	    	    	    	    	    	    	    	    
170177	1978	    	    	    	    	    	    	    	    	    	    	    	    
170177	1979	    	    	    	    	    	    	    	    	    	    	    	    
170177	1980	    	    	    	    	    	    	    	    	    	    	    	    
170177	1981	    	    	    	    	    	    	    	    	    	    	    	    
170177	1982	    	    	    	    	    	    	    	    	    	    	    	    
170177	1983	    	    	    	    	    	    	    	    	    	    	    	    
170177	1984	    	    	    	    	    	    	    	    	    	    	    	    
170177	1985	    	    	    	    	    	    	    	    	    	    	    	    
170177	1986	    	    	    	    	    	    	    	    	    	    	    	    
170177	1987	    	    	    	    	    	    	    	    	    	    	    	    
170177	1988	    	    	    	    	    	    	    	    	    	    	    	    
170177	1989	    	    	    	    	    	    	    	    	    	    	    	    
170177	1990	    	    	    	    	    	    	    	    	    	    	    	  229
170177	1991	  574	  150	  328	    	    	    	    	    	    	    	   30	  604
170177	1992	   76	  780	  109	  384	    	    	    	    	    	    	   61	  173
170177	1993	  259	 1008	  716	  198	    	    	    	    	    	   43	    5	  163