"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
170409	1970	    	    	    	    	    	    	    	    	    	    	    	    
170409	1971	    	    	    	    	    	    	    	    	    	    	    	    
170409	1972	    	    	    	    	    	    	    	    	    	    	    	    
170409	1973	    	    	    	    	    	    	    	    	    	    	    	    
170409	1974	    	    	    	    	    	    	    	    	    	    	    	    
170409	1975	    	    	    	    	    	    	    	    	    	    	    	    
170409	1976	    	    	    	    	    	    	    	    	    	    	    	    
170409	1977	    	    	    	    	    	    	    	    	    	    	    	    
170409	1978	    	    	    	    	    	    	    	    	    	    	    	    
170409	1979	    	    	    	    	    	    	    	    	    	    	    	    
170409	1980	    	    	    	    	    	    	    	    	    	    	    	    
170409	1981	    	    	    	    	    	    	    	    	    	    	    	    
170409	1982	    	    	    	    	    	    	    	    	    	    	    	    
170409	1983	    	    	    	    	    	    	    	    	    	    	    	    
170409	1984	    	    	    	    	    	    	    	    	    	    	    	    
170409	1985	    	    	    	    	    	    	    	    	    	    	    	    
170409	1986	    	    	    	    	    	    	    	    	    	    	    	    
170409	1987	    	    	    	    	    	    	    	    	    	    	    	    
170409	1988	    	    	    	    	    	    	    	    	    	    	    	    
170409	1989	    	    	    	    	    	    	    	    	    	    	    	    
170409	1990	    	    	    	    	    	    	    	    	    	    	    	    
170409	1991	    	    	    	    	    	    	    	    	    	    	    	    
170409	1992	    	    	    	    	    	    	    	    	    	    	    	   46
170409	1993	   63	  100	  144	  130	   20	   98	   94	   62	   86	   76	  115	  141