"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
194105	1970	 -7.4	 -2.0	  0.9	  8.5	 15.5	 19.4	 23.3	 22.4	 17.8	 12.2	  6.3	 -3.9
194105	1971	 -5.7	 -1.8	  1.6	  7.1	 13.6	 20.4	 22.7	 22.0	 18.9	 14.3	  3.9	 -0.5
194105	1972	 -1.7	 -3.4	  0.4	  6.2	 14.1	 18.0	 22.2	 20.5	 17.2	  9.5	  3.0	 -0.4
194105	1973	 -1.5	 -3.2	  4.7	  9.9	 13.3	 20.3	 23.0	 23.4	 16.9	 11.0	  5.4	  1.3
194105	1974	 -2.3	 -3.3	  2.3	  9.6	 12.6	 18.8	 22.5	 22.1	 16.6	  8.6	  6.2	  0.8
194105	1975	 -1.5	 -2.7	  1.2	  6.1	 16.5	 19.7	 23.9	 22.1	 16.1	 12.0	  8.5	 -1.6
194105	1976	 -5.7	  0.2	  3.1	 10.8	 14.6	 22.1	 21.5	 21.0	 16.4	  9.4	  3.5	 -4.8
194105	1977	 -7.8	 -2.9	  5.2	  9.1	 16.2	 18.6	 22.6	 21.7	 16.7	 10.9	  6.5	 -2.3
194105	1978	 -4.5	 -6.1	  0.3	  7.3	 14.6	 19.2	 21.8	 21.8	 15.5	 10.1	  5.1	 -0.5
194105	1979	 -2.6	 -6.4	  4.7	  8.0	 15.1	 19.3	 23.4	 21.8	 16.8	 10.7	  8.1	  1.0
194105	1980	 -2.5	 -3.9	  1.9	  8.9	 14.2	 18.4	 22.8	 22.4	 17.6	  9.7	  3.8	 -3.7
194105	1981	 -7.5	  0.7	  2.9	 10.3	 15.5	 20.7	 22.9	 21.0	 16.3	  8.7	  5.0	 -1.2
194105	1982	 -7.8	 -2.8	  1.5	  6.7	 15.0	 16.7	 22.9	 20.1	 16.8	 10.3	  7.2	  2.2
194105	1983	 -3.1	 -1.3	  3.7	  8.7	 13.4	 20.3	 23.3	 22.3	 19.1	 11.0	  6.9	 -1.6
194105	1984	 -4.8	  1.2	 -0.8	  7.7	 13.8	 20.2	 22.2	 22.7	 15.9	 12.2	  5.6	  1.6
194105	1985	 -6.5	 -1.6	  3.2	  8.4	 14.5	 17.7	 22.6	 21.4	 17.0	 11.4	  5.6	 -2.4
194105	1986	 -2.1	 -3.6	  3.7	  9.3	 14.9	 17.8	 21.1	 20.1	 15.5	 10.9	  4.0	    
194105	1987	 -3.9	 -3.1	  2.7	  7.9	 14.4	 19.6	 22.7	 21.0	 17.0	  9.7	  5.6	  0.6
194105	1988	 -4.4	 -1.8	  2.1	  8.0	 14.0	 19.4	 22.6	 23.9	 16.0	  8.9	  6.3	 -1.5
194105	1989	 -1.7	 -2.5	  1.7	  6.9	 15.3	 19.2	 21.5	 20.4	 16.5	 11.0	  4.9	 -7.7
194105	1990	    	 -0.8	  2.7	  8.0	 12.2	 18.8	 22.2	 21.9	 16.6	 12.7	  6.0	  2.5
194105	1991	 -4.0	 -0.6	  3.5	  9.5	 16.8	 19.3	 21.3	 21.6	 15.1	 11.4	  4.7	 -0.2
194105	1992	 -3.1	 -2.1	 -0.5	  6.0	 13.6	 19.1	 21.0	 21.0	 17.3	  9.3	  4.1	 -0.2
194105	1993	 -1.7	 -6.2	  0.5	  8.8	    	 19.3	 23.4	 23.2	 17.4	 10.0	  5.7