"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
170480	1970	 -8.7	 -4.5	  0.3	  5.8	 13.6	 17.7	 21.6	 20.5	 15.5	 11.0	  4.8	 -5.9
170480	1971	 -6.4	 -3.7	  0.1	  5.4	 12.5	 17.7	 20.8	 20.2	 17.3	 12.2	  2.6	 -3.1
170480	1972	 -3.6	 -5.2	 -1.1	  4.7	 13.0	 16.7	 20.2	 19.7	 16.3	  8.2	  2.2	 -4.2
170480	1973	 -3.5	 -3.7	  3.1	  7.5	 10.6	 17.8	 21.9	 21.3	 15.2	 10.3	  3.4	  1.0
170480	1974	 -4.2	 -4.8	  0.7	  7.0	 10.1	 16.6	 19.9	 20.4	 14.4	  7.2	  3.9	 -1.0
170480	1975	 -3.4	 -3.9	  0.1	  5.1	 13.3	 17.5	 21.3	 20.3	 14.7	 10.2	  5.9	 -3.5
170480	1976	 -5.4	 -1.8	  0.9	  7.5	 12.9	 19.6	 20.1	 20.3	 15.6	  8.5	  2.5	 -6.4
170480	1977	 -7.7	 -4.7	  3.1	  6.6	 13.5	 15.4	 20.4	 19.3	 14.7	  9.5	  5.0	 -2.6
170480	1978	 -6.1	 -5.4	 -1.0	  6.0	 13.1	 17.4	 20.3	 20.3	 14.1	  9.2	  2.5	 -2.7
170480	1979	 -3.1	 -6.1	  3.1	  6.3	 12.6	 17.7	 20.9	 19.2	 15.7	  9.2	  6.8	 -0.7
170480	1980	 -4.8	 -5.5	  0.1	  6.9	 12.7	 16.2	 21.5	 18.9	 12.7	  7.4	  3.1	 -4.7
170480	1981	 -6.8	 -0.2	  2.0	  7.8	 12.8	 17.6	 20.2	 18.4	 14.3	  8.0	  3.3	 -1.6
170480	1982	 -6.8	 -3.7	  1.2	  5.5	 11.4	 14.8	 19.9	 17.6	 15.1	  8.9	  5.9	  0.5
170480	1983	 -4.3	 -3.2	  1.1	  5.8	 10.9	 17.7	 20.6	 19.7	 16.6	  9.4	  4.5	 -2.8
170480	1984	 -5.8	  0.3	 -1.9	  6.0	 12.5	 17.4	 21.1	 20.6	 14.4	 10.8	  4.5	 -0.5
170480	1985	 -8.0	 -2.1	  1.7	  7.1	 12.5	 16.3	 20.8	 19.1	 16.0	  9.9	  3.8	 -4.9
170480	1986	 -4.1	 -5.9	  0.3	  7.6	 11.1	 15.8	 18.3	 17.7	 13.4	  8.6	  1.8	 -2.3
170480	1987	 -5.9	 -5.7	  0.3	  6.9	 12.6	 17.5	 19.0	 18.3	 14.9	  9.1	  2.4	 -2.1
170480	1988	 -4.9	 -4.1	  0.1	  5.8	 12.4	 17.1	 20.4	 20.3	 15.1	  7.9	  4.9	 -3.5
170480	1989	 -3.5	 -5.7	 -1.3	  4.3	 12.5	 16.9	 19.4	 18.6	 15.0	  9.4	  2.4	 -9.3
170480	1990	 -1.8	 -3.9	  0.5	  6.5	 11.0	 16.4	 20.4	 20.3	 14.7	 11.2	  4.4	  0.6
170480	1991	 -5.6	 -2.9	  1.9	  7.1	 14.6	 18.1	 19.7	 20.5	 14.4	 10.3	  4.4	 -4.2
170480	1992	 -5.9	 -4.0	 -1.8	  4.3	 11.0	 16.6	 18.0	 18.3	 14.7	  7.9	  2.2	 -2.6
170480	1993	 -5.2	 -7.9	 -1.3	  5.2	 12.3	 16.7	 20.1	 19.7	 15.2	  7.7	  3.7	 -1.8