"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
194502	1970	    	    	    	    	    	    	    	    	    	    	    	    
194502	1971	    	    	    	    	    	    	    	    	    	    	    	    
194502	1972	    	    	    	    	    	    	    	    	    	    	    	    
194502	1973	    	    	    	    	    	    	    	    	    	    	    	    
194502	1974	    	    	    	    	    	    	    	    	    	    	    	    
194502	1975	    	    	    	    	    	    	    	    	    	    	    	    
194502	1976	    	    	    	    	    	    	    	    	    	    	    	    
194502	1977	    	    	    	    	    	    	    	    	    	    	    	    
194502	1978	    	    	    	    	    	    	    	    	    	    	    	    
194502	1979	    	    	    	    	    	    	    	    	    	    	    	    
194502	1980	    	    	    	    	    	    	    	    	    	    	    	    
194502	1981	    	    	    	    	    	    	    	    	    	    	    	    
194502	1982	    	    	    	    	    	    	    	    	    	    	    	    
194502	1983	    	    	    	    	    	    	    	    	    	    	    	    
194502	1984	    	    	    	    	    	    	    	    	   39	  105	   38	  103
194502	1985	   37	   54	   68	   48	   84	  118	   81	  161	   96	   35	  171	   32
194502	1986	  107	   90	   92	   48	   28	  176	  140	   68	   43	   66	  150	  177
194502	1987	  190	   20	  103	  276	   58	   54	   34	  101	  207	   73	  117	   75
194502	1988	   83	  121	  109	   56	  118	   26	  183	   59	   36	   62	  181	   31
194502	1989	   16	   82	   94	  112	  116	  105	   95	  169	  126	  158	  159	   39
194502	1990	  109	  113	   51	  155	  164	   22	  105	  171	   47	  170	   44	   88
194502	1991	  125	   47	  123	  137	    	   88	   51	  151	  181	  108	  112	   95
194502	1992	   91	   59	  105	   60	   34	  141	   85	  120	  115	   50	  125	  160
194502	1993	   45	  154	  220	  158	   20	   42	   52	   23	  121	  100	   96	  162