"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
195159	1970	 -4.0	  0.3	  2.7	  7.2	 12.5	 17.0	 20.6	 20.9	 17.6	 12.7	  8.5	  2.0
195159	1971	 -2.0	  0.2	  2.3	  5.7	 11.5	    	 21.4	 20.7	 20.8	 17.0	  8.4	  3.8
195159	1972	  0.9	 -1.3	  1.5	  4.8	 10.4	 15.2	 18.7	 18.9	 16.8	  9.5	  5.6	  3.5
195159	1973	 -1.3	 -1.3	  4.3	  7.0	 10.7	 17.1	 19.5	 20.4	 15.8	 11.8	  5.9	  2.8
195159	1974	  0.1	 -1.9	  2.7	  7.5	 10.6	 14.5	 20.3	 21.7	 18.0	 10.3	  7.0	  3.0
195159	1975	  2.6	  0.6	  1.2	  5.4	 12.3	 16.2	 22.2	 22.2	 18.1	 14.1	 10.4	  3.0
195159	1976	 -1.0	  2.2	  3.3	  8.1	 12.5	 17.0	 20.0	 19.9	 16.9	 11.3	  4.7	 -0.5
195159	1977	 -4.1	 -0.9	  5.4	  8.1	 12.2	 16.3	 20.6	 21.4	 17.5	 12.1	  8.2	  1.6
195159	1978	 -1.3	 -3.4	  1.1	  6.3	 11.7	 18.9	 20.4	 22.4	 16.0	 12.7	  8.7	  3.9
195159	1979	  2.0	 -4.2	  4.1	  7.1	 13.9	 17.0	 21.5	 20.2	 17.0	 12.0	  9.5	  4.1
195159	1980	  0.3	 -1.9	  2.3	  8.1	 12.4	 16.9	 21.1	 21.6	 17.8	 11.6	  5.9	  0.2
195159	1981	 -5.2	  2.4	  1.9	  8.0	 11.5	 17.4	 20.8	 19.9	 17.0	 10.4	  7.2	  1.8
195159	1982	 -3.5	 -0.5	  3.0	  5.3	 11.4	 14.7	 19.5	 18.6	 16.2	    	    	    
195159	1983	    	    	    	    	    	    	    	    	    	    	    	    
195159	1984	    	    	    	    	    	    	    	    	    	    	    	    
195159	1985	    	    	    	    	    	    	    	    	    	    	    	    
195159	1986	    	    	    	    	    	    	    	    	    	    	    	    
195159	1987	    	    	    	    	    	    	    	    	    	    	    	    
195159	1988	    	    	    	    	    	    	    	    	    	    	    	    
195159	1989	    	    	    	    	    	    	    	    	    	    	    	    
195159	1990	    	    	    	    	    	    	    	    	    	    	    	    
195159	1991	    	    	    	    	    	    	    	    	    	    	    	    
195159	1992	    	    	    	    	    	    	    	    	    	    	    	    
195159	1993