"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
173944	1970	    	    	    	    	    	    	    	    	    	    	    	    
173944	1971	    	    	    	    	    	    	    	    	    	    	    	    
173944	1972	    	    	    	    	    	    	    	    	    	    	    	    
173944	1973	    	    	    	    	    	    	    	    	    	    	    	    
173944	1974	    	    	    	    	    	    	    	    	    	    	    	    
173944	1975	    	    	    	    	    	    	    	    	    	    	    	    
173944	1976	    	    	    	    	    	    	    	    	    	    	    	    
173944	1977	    	    	    	    	    	    	    	    	    	    	    	    
173944	1978	    	    	    	    	    	    	    	    	    	    	    	    
173944	1979	    	    	    	    	    	    	    	    	    	    	    	    
173944	1980	    	    	    	    	    	    	    	    	    	    	    	    
173944	1981	    	    	    	    	    	    	    	    	    	    	    	    
173944	1982	    	    	    	    	    	    	    	    	    	    	    	    
173944	1983	    	    	    	    	    	    	    	    	    	    	    	    
173944	1984	    	    	    	    	    	    	    	    	    	    	    	    
173944	1985	    	    	    	    	    	    	    	    	    	    	  284	  439
173944	1986	  653	  224	  424	  244	    	    	    	    	    	    	  432	  246
173944	1987	 1024	  140	  528	  203	    2	    	    	    	    	    	  178	  528
173944	1988	  635	  490	  158	  145	    	    	    	    	    	    8	   94	  376
173944	1989	  450	  554	  401	  483	    	    	    	    	    	   46	  589	  737
173944	1990	  612	  231	  274	  188	   25	    	    	    	    	    	  119	  325
173944	1991	  678	  249	  526	   36	    	    	    	    	   18	    	   38	  429
173944	1992	  333	  785	   74	  163	    	    	    	    	    	   15	  124	  328
173944	1993	  127	  668	  462	  432	    	    	    	    	    	    	  135	  272