"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
273415	1970	    	    	    	    	    	    	    	    	    	    	    	    
273415	1971	    	    	    	    	    	    	    	    	    	    	    	    
273415	1972	    	    	    	    	    	    	    	    	    	    	    	    
273415	1973	    	    	    	    	    	    	    	    	    	    	    	    
273415	1974	    	    	    	    	    	    	    	    	    	    	    	    
273415	1975	    	    	    	    	    	    	    	    	    	    	    	    
273415	1976	    	    	    	    	    	    	    	    	    	    	    	    
273415	1977	    	    	    	    	    	    	    	    	    	    	    	    
273415	1978	    	    	    	    	    	    	    	    	    	    	   76	  551
273415	1979	  991	  152	   76	  178	    	    	    	    	    	    	   25	  102
273415	1980	  152	  216	  457	    	    	    	    	    	    	    	  254	  277
273415	1981	  165	  432	  165	   25	    	    	    	    	    	    	  102	  866
273415	1982	  610	  381	  343	  457	    	    	    	    	    	    	   76	  140
273415	1983	  368	  419	  495	  127	    	    	    	    	    	    	  152	  483
273415	1984	  343	  495	  559	    	    	    	    	    	    	    	  102	  610
273415	1985	  381	  226	  356	  114	    	    	    	    	    	    	  140	  434
273415	1986	  444	  292	  229	   18	   13	    	    	    	    	    	  229	  229
273415	1987	  914	   76	  343	  152	    	    	    	    	    	    	  140	  279
273415	1988	  361	  495	   94	  140	    	    	    	    	    	    	   20	  102
273415	1989	  193	  259	  183	  178	    	    	    	    	    	    	  297	  470
273415	1990	  470	  442	  152	   25	    	    	    	    	    	    	  127	  356
273415	1991	  381	  254	  124	    	    	    	    	    	    	    	  102	  437
273415	1992	   96	  480	  312	  178	    	    	    	    	    	   51	  188	   89
273415	1993	  340	  686	  635	   76	    	    	    	    	    	   23	   84	  292