"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
172700	1970	    	    	    	    	    	    	    	    	    	    	    	    
172700	1971	    	    	    	    	    	    	    	    	    	    	    	    
172700	1972	    	    	    	    	    	    	    	    	    	    	    	    
172700	1973	    	    	    	    	    	    	    	    	    	    	    	    
172700	1974	    	    	    	    	    	    	    	    	    	    	    	    
172700	1975	    	    	    	    	    	    	    	    	    	    	    	    
172700	1976	    	    	    	    	    	    	    	    	    	    	    	    
172700	1977	    	    	    	    	    	    	    	    	    	    	    	    
172700	1978	    	    	    	    	    	    	    	    	    	    	    	    
172700	1979	    	    	    	    	    	    	    	    	    	    	    	    
172700	1980	    	    	    	    	    	    	    	    	    	    	    	    
172700	1981	    	    	    	    	    	    	    	    	    	    	    	    
172700	1982	    	    	    	    	    	    	    	    	    	    	    	    
172700	1983	    	    	    	    	    	    	    	    	    	    	    	    
172700	1984	    	    	    	    	  180	  144	   91	   29	   29	   54	   59	   68
172700	1985	   21	   82	   49	   34	   62	   87	  126	  116	   84	   49	  104	   46
172700	1986	   94	   34	   93	   50	  104	   80	   64	  136	   81	   29	  105	   42
172700	1987	   52	   18	   60	  113	   72	   90	   89	   46	  122	   80	   49	   82
172700	1988	   40	   83	   19	   73	   67	   61	  144	  178	   27	   67	  118	   29
172700	1989	   44	   49	   62	   75	  129	   70	   27	  139	  100	   39	   90	   35
172700	1990	   86	   54	   43	   60	   96	  104	   69	  131	   80	  234	   71	   91
172700	1991	   70	   21	   93	   82	   87	  102	   41	  224	   79	  124	   85	   53
172700	1992	   42	   65	   84	   48	   22	  163	   80	   87	   71	   57	   99	   32
172700	1993	   39	   61	   99	  142	   60	   92	   64	   40	  122	   78	   62	   89