"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
172700	1970	    	    	    	    	    	    	    	    	    	    	    	    
172700	1971	    	    	    	    	    	    	    	    	    	    	    	    
172700	1972	    	    	    	    	    	    	    	    	    	    	    	    
172700	1973	    	    	    	    	    	    	    	    	    	    	    	    
172700	1974	    	    	    	    	    	    	    	    	    	    	    	    
172700	1975	    	    	    	    	    	    	    	    	    	    	    	    
172700	1976	    	    	    	    	    	    	    	    	    	    	    	    
172700	1977	    	    	    	    	    	    	    	    	    	    	    	    
172700	1978	    	    	    	    	    	    	    	    	    	    	    	    
172700	1979	    	    	    	    	    	    	    	    	    	    	    	    
172700	1980	    	    	    	    	    	    	    	    	    	    	    	    
172700	1981	    	    	    	    	    	    	    	    	    	    	    	    
172700	1982	    	    	    	    	    	    	    	    	    	    	    	    
172700	1983	    	    	    	    	    	    	    	    	    	    	    	    
172700	1984	    	    	    	    	    	    	    	    	    	    	    	    
172700	1985	    	    	    	    	    	    	    	    	    	    	 -1.0	 -8.6
172700	1986	 -7.7	 -9.1	 -3.4	  5.7	 10.2	 13.3	 16.3	 15.3	  9.7	  5.3	 -2.9	 -6.7
172700	1987	 -9.0	 -9.5	 -2.0	  5.2	  9.4	 15.4	 17.8	 15.0	 11.5	  5.3	 -1.9	 -5.6
172700	1988	 -7.2	 -7.6	 -4.8	  3.0	 10.7	 14.0	 18.7	 17.3	 11.1	  4.0	 -0.1	 -8.2
172700	1989	 -7.4	 -8.0	 -4.9	  1.0	 10.1	 12.6	 15.1	 13.3	 11.0	  5.6	 -2.0	-11.9
172700	1990	 -6.0	 -7.1	 -3.3	  3.3	  8.5	 15.4	 17.3	 16.8	 11.6	  7.1	  0.3	 -5.3
172700	1991	 -9.1	 -5.8	 -3.4	  3.9	 11.0	 15.0	 17.2	 17.2	  9.5	  6.5	 -0.4	 -7.3
172700	1992	 -8.2	 -8.3	 -6.3	  1.3	  9.6	 14.6	 14.9	 16.0	 11.8	  3.8	 -1.9	 -5.8
172700	1993	 -8.2	 -9.7	 -4.0	  3.4	 10.0	 14.6	 17.5	 17.4	 11.2	  3.0	 -1.0	 -5.8