"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
174817	1970	    	    	    	    	    	    	    	    	    	    	    	    
174817	1971	    	    	    	    	    	    	    	    	    	    	    	    
174817	1972	    	    	    	    	    	    	    	    	    	    	    	    
174817	1973	    	    	    	    	    	    	    	    	    	    	    	    
174817	1974	    	    	    	    	    	    	    	    	    	    	    	    
174817	1975	    	    	    	    	    	    	    	    	    	    	    	    
174817	1976	    	    	    	    	    	    	    	    	    	    	    	    
174817	1977	    	    	    	    	    	    	    	    	    	    	    	    
174817	1978	    	    	    	    	    	    	    	    	    	    	  229	  508
174817	1979	 1092	  262	   64	  229	    	    	    	    	    	   25	    	   76
174817	1980	  114	  178	  305	   51	    	    	    	    	    	    	  241	  244
174817	1981	  140	  254	   51	    	    	    	    	    	    	    	    	  698
174817	1982	  660	  330	  330	  229	    	    	    	    	    	    	   64	   38
174817	1983	  406	  394	  330	   51	    	    	    	    	    	    	   51	  444
174817	1984	  343	  216	  648	    	    	    	    	    	    	    	    	  737
174817	1985	  165	  165	  318	  190	    	    	    	    	    	    	  127	  381
174817	1986	  597	  356	  305	   64	    	    	    	    	    	    	  414	  330
174817	1987	 1181	  203	  279	  203	    	    	    	    	    	    	  165	  343
174817	1988	  432	  737	   51	   51	    	    	    	    	    	    	   38	  216
174817	1989	  229	  292	  330	   38	    	    	    	    	    	    	   51	  546
174817	1990	  838	  622	  140	   13	    	    	    	    	    	    	    	  457
174817	1991	  584	  190	  241	    	    	    	    	    	    	    	   13	  610
174817	1992	   51	  457	   33	  279	    	    	    	    	    	    	   38	   51
174817	1993	  330	  914	  902	  165