"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
172751	1970	    	    	    	    	    	    	    	    	    	    	    	    
172751	1971	    	    	    	    	    	    	    	    	    	    	    	    
172751	1972	    	    	    	    	    	    	    	    	    	    	    	    
172751	1973	    	    	    	    	    	    	    	    	    	    	    	    
172751	1974	    	    	    	    	    	    	    	    	    	    	    	    
172751	1975	    	    	    	    	    	    	    	    	    	    	    	    
172751	1976	    	    	    	    	    	    	    	    	    	    	    	    
172751	1977	    	    	    	    	    	    	    	    	    	    	    	    
172751	1978	    	    	    	    	    	    	    	    	    	    	    	    
172751	1979	    	    	    	    	    	    	    	    	    	    	    	    
172751	1980	    	    	    	    	    	    	    	    	    	    	    	    
172751	1981	    	    	    	    	    	    	    	    	    	    	    	    
172751	1982	    	    	    	    	    	    	    	    	    	    	    	    
172751	1983	    	    	    	    	    	    	    	    	    	    	    	    
172751	1984	    	    	    	    	    	    	    	    	    	    	    	    
172751	1985	    	    	    	    	    	    	    	    	    	    	    	    
172751	1986	    	    	    	    	    	    	    	    	    	    	    	    
172751	1987	    	    	    	    	    	    	    	    	    	    	    	    
172751	1988	    	    	    	    	    	    	    	    	    	    	    	    
172751	1989	    	    	    	    	    	    	    	    	    	    	    	    
172751	1990	    	    	    	    	    	    	    	    	    	    	    	    
172751	1991	    	    	    	    	    	    	    	    	    	    	    	  599
172751	1992	   51	  277	  211	  277	    	    	    	    	    	    	   79	   48
172751	1993	  350	 1006	 1006	  193	    	    	    	    	    	    5	    	  175