"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
170200	1970	    	    	    	    	    	    	    	    	    	    	    	    
170200	1971	    	    	    	    	    	    	    	    	    	    	    	    
170200	1972	    	    	    	    	    	    	    	    	    	    	    	    
170200	1973	    	    	    	    	    	    	    	    	    	    	    	    
170200	1974	    	    	    	    	    	    	    	    	    	    	    	    
170200	1975	    	    	    	    	    	    	    	    	    	    	    	    
170200	1976	    	    	    	    	    	    	    	    	    	    	    	    
170200	1977	    	    	    	    	    	    	    	    	    	    	    	    
170200	1978	    	    	    	    	    	    	    	    	    	    	    	    
170200	1979	    	    	    	    	    	    	    	    	    	    	    	    
170200	1980	    	    	    	    	    	    	    	    	    	    	    	    
170200	1981	    	    	    	    	    	    	    	    	    	    	    	    
170200	1982	    	    	    	    	    	    	    	    	    	    	    	    
170200	1983	    	    	    	    	    	    	    	    	    	    	    	    
170200	1984	    	    	    	    	    	    	    	    	    	    	    	    
170200	1985	    	    	    	    	    	    	    	    	    	    	    	    
170200	1986	    	    	    	    	  107	  114	   89	  206	  104	   56	   88	   47
170200	1987	   53	    2	   46	   40	   42	  131	   80	   60	  101	   87	   63	   71
170200	1988	   48	   52	   20	   76	   54	   70	  109	  112	   66	   89	  123	   18
170200	1989	   38	   30	   41	   48	  114	  115	   53	   50	   59	   55	   97	   36
170200	1990	   73	   42	   56	   49	   71	   80	   46	  156	   84	  140	  112	   99
170200	1991	   47	   28	  117	   70	   89	   27	   97	  180	  125	  125	   46	   39
170200	1992	  104	   47	   53	   59	   37	  139	  163	   81	   65	   93	   48	   31
170200	1993	   57	   43	   30	   96	   59	   91	   80	   89	  135	   94	   84	   91