"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
171516	1970	    	    	    	    	    	    	    	    	    	    	    	    
171516	1971	    	    	    	    	    	    	    	    	    	    	    	    
171516	1972	    	    	    	    	    	    	    	    	    	    	    	    
171516	1973	    	    	    	    	    	    	    	    	    	    	    	    
171516	1974	    	    	    	    	    	    	    	    	    	    	    	    
171516	1975	    	    	    	    	    	    	    	    	    	    	    	    
171516	1976	    	    	    	    	    	    	    	    	    	    	    	    
171516	1977	    	    	    	    	    	    	    	    	    	    	    	    
171516	1978	    	    	    	    	    	    	    	    	    	    	    	    
171516	1979	    	    	    	    	    	    	    	    	    	    	    	    
171516	1980	    	    	    	    	    	    	    	    	    	    	    	    
171516	1981	    	    	    	    	    	    	    	    	    	    	    	    
171516	1982	    	    	    	    	    	    	    	    	    	    	    	    
171516	1983	    	    	    	    	    	    	    	    	    	    	    	    
171516	1984	    	    	    	    	    	    	    	    	    	    	    	    
171516	1985	    	    	    	    	    	    	    	    	    	    	    	    
171516	1986	    	    	    	    	    	    	    	    	    	    	    	    
171516	1987	    	    	    	    	    	    	    	    	    	    	    	    
171516	1988	    	    	    	    	    	    	    	    	    	    	    	    
171516	1989	    	    	    	    	    	    	    	    	    	  5.3	 -2.2	-11.3
171516	1990	 -6.3	 -7.0	 -3.3	  2.1	  8.2	 14.6	 17.2	 16.8	 11.0	  5.8	 -0.8	 -6.3
171516	1991	 -8.5	 -6.0	 -4.2	  2.9	  7.0	    	    	    	    	    	    	    
171516	1992	    	    	    	    	  9.3	 13.8	 14.1	 15.8	 11.7	  3.4	 -2.2	 -6.1
171516	1993	 -8.0	 -9.1	 -4.7	  2.5	  9.1	 13.7	 17.1	 17.1	 11.0	  2.4	 -1.8	 -5.9