"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
193505	1970	 -6.6	 -1.1	  1.9	  9.0	 16.3	 20.1	 23.9	 22.8	 18.1	 12.7	  6.2	 -3.4
193505	1971	 -5.6	 -1.5	  2.4	  7.8	 14.3	 20.7	 23.1	 22.6	 19.6	 14.6	  4.0	 -0.1
193505	1972	 -1.6	 -3.2	  1.3	  6.6	 14.8	 19.1	 23.0	 21.3	 17.8	  9.8	  3.8	 -1.1
193505	1973	 -1.6	 -2.1	  5.3	 10.3	 14.0	 20.9	 23.9	 24.0	 17.5	 12.0	  5.5	  2.1
193505	1974	 -1.7	 -1.9	  3.4	 11.3	 13.0	 19.5	 23.3	 22.5	 17.6	  9.4	  6.1	  1.0
193505	1975	 -0.6	 -1.5	  2.3	  7.3	 17.4	 20.3	 24.6	 22.2	 16.6	 12.5	  8.6	 -0.9
193505	1976	 -5.2	  1.1	  4.1	 11.4	 15.4	 22.7	 22.4	 21.7	 17.2	 10.3	  3.9	 -4.0
193505	1977	 -6.7	 -2.2	  6.2	 10.1	 17.0	 19.0	 23.5	 22.5	 17.3	 11.7	  6.8	 -1.6
193505	1978	 -3.8	 -5.0	  1.4	  8.0	 15.6	 20.1	 22.8	 22.5	 16.6	 11.4	  5.2	 -0.1
193505	1979	 -1.6	 -5.5	  5.6	  8.5	 16.0	 20.0	 24.0	 21.4	 17.8	 11.3	  8.4	  1.0
193505	1980	 -2.6	 -4.0	  1.5	  8.1	 13.5	 17.3	 22.7	 21.7	 16.8	  9.1	  3.4	 -3.2
193505	1981	 -7.6	  1.0	  2.7	  9.8	 14.6	 19.4	 21.6	 20.0	 15.0	  8.6	  4.5	 -1.7
193505	1982	 -7.1	 -3.0	  1.6	  6.7	 13.4	 15.6	 21.5	 19.3	 16.1	  9.9	  7.4	  1.7
193505	1983	 -2.9	 -1.9	  3.2	  8.1	 12.7	 18.7	 23.0	 21.7	 18.8	 10.6	  5.6	 -1.5
193505	1984	 -4.6	  0.8	 -1.1	  7.1	 12.9	 19.6	 21.8	 21.6	 15.0	 11.1	  4.6	  1.2
193505	1985	 -7.2	 -1.6	  3.2	  7.7	 13.6	 17.1	 21.6	 19.5	 16.1	 10.7	  4.7	 -3.4
193505	1986	 -2.7	 -3.8	  3.1	  7.9	 13.3	 16.7	 20.0	 19.3	 14.9	  8.7	  2.5	 -1.0
193505	1987	 -4.7	 -3.6	  1.5	  7.0	 13.4	 18.4	 20.6	 18.7	 15.4	  8.7	  4.1	 -0.3
193505	1988	 -3.7	 -2.1	  2.0	  6.4	 12.5	 17.6	 22.3	 22.7	 14.9	  8.6	  5.8	 -1.8
193505	1989	 -1.0	 -2.7	  1.6	  6.4	 14.8	 18.5	 21.8	 21.3	 16.7	 10.8	  4.1	 -7.7
193505	1990	  0.4	 -1.1	  3.4	  7.9	 11.8	 18.8	 22.1	 22.5	 16.3	 12.4	  6.6	  2.4
193505	1991	 -3.7	 -0.4	  3.6	  9.1	 16.4	 19.2	 21.5	 22.0	 15.2	 11.4	  5.4	 -0.9
193505	1992	 -2.8	 -1.8	  0.5	  6.4	 12.1	 18.5	 19.6	 20.1	 15.8	  8.6	  4.0	 -0.8
193505	1993	 -2.4	 -5.4	  0.3	  7.9	 14.1	 19.0	 22.3	 21.9	 16.3	  8.7	  4.8	 -0.8