"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
171430	1970	    	    	    	    	    	    	    	    	    	    	    	    
171430	1971	    	    	    	    	    	    	    	    	    	    	    	    
171430	1972	    	    	    	    	    	    	    	    	    	    	    	    
171430	1973	    	    	    	    	    	    	    	    	    	    	    	    
171430	1974	    	    	    	    	    	    	    	    	    	    	    	    
171430	1975	    	    	    	    	    	    	    	    	    	    	    	    
171430	1976	    	    	    	    	    	    	    	    	    	    	    	    
171430	1977	    	    	    	    	    	    	    	    	    	    	    	    
171430	1978	    	    	    	    	    	    	    	    	    	    	    	    
171430	1979	    	    	    	    	    	    	    	    	    	    	    	    
171430	1980	    	    	    	    	    	    	    	    	    	    	    	    
171430	1981	    	    	    	    	    	    	    	    	    	    	    	    
171430	1982	    	    	    	    	    	    	    	    	    	    	    	    
171430	1983	    	    	    	    	    	    	    	    	    	    	    	    
171430	1984	    	    	    	    	    	    	    	    	    	    	    	    
171430	1985	    	    	    	    	    	    	    	    	    	    	    	    
171430	1986	    	    	    	    	    	    	    	    	    	    	    	    
171430	1987	    	    	    	    	    	    	    	    	    	    	    	    
171430	1988	    	    	   16	   11	   42	   46	   80	  106	   20	  172	   72	   18
171430	1989	   26	   37	    	   52	  113	   86	  121	   79	   89	   53	   92	    2
171430	1990	  110	   41	   21	   29	   62	  135	   92	  156	  102	  213	   78	   50
171430	1991	   31	    	   82	   56	   61	   29	   40	  137	   69	  112	   29	   27
171430	1992	    	    	    	    	    	    	    	    	    	    	    	    
171430	1993