"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	    	    	    	    	    	    	    	    	    	    	    5	   69
194502	1985	  241	  320	  168	   56	    	    	    	    	    	    	   76	   41
194502	1986	   51	  302	   96	    	    	    	    	    	    	    	  208	  114
194502	1987	  714	  150	  114	  104	    	    	    	    	    	    	  312	  178
194502	1988	  417	  510	  117	    	    	    	    	    	    	    	    	   71
194502	1989	   51	  239	  124	   28	    	    	    	    	    	    	  183	  188
194502	1990	  297	  467	   89	   28	    	    	    	    	    	    	    	   51
194502	1991	  391	   91	   66	    	    	    	    	    	    	    	    	  249
194502	1992	   36	  150	  345	   25	    	    	    	    	    	    	    	  102
194502	1993	  292	  490	 1034	    	    	    	    	    	    	    	    	  203