obs,year,temp_F,Temp_C
1,1921,10.2,-12.11111111
2,1922,8.6,-13
3,1923,9.2,-12.66666667
4,1924,5.1,-14.94444444
5,1925,8,-13.33333333
6,1926,12.1,-11.05555556
7,1927,9,-12.77777778
8,1928,12.5,-10.83333333
9,1929,11.4,-11.44444444
10,1930,11.2,-11.55555556
11,1931,8.5,-13.05555556
12,1932,10.1,-12.16666667
13,1933,7.2,-13.77777778
14,1934,9.7,-12.38888889
15,1935,10.2,-12.11111111
16,1936,8.5,-13.05555556
17,1937,12.9,-10.61111111
18,1938,11.1,-11.61111111
19,1939,10.7,-11.83333333
20,1940,13.9,-10.05555556
21,1941,9.8,-12.33333333
22,1942,11.5,-11.38888889
23,1943,11.3,-11.5
24,1944,10.8,-11.77777778
25,1945,7.6,-13.55555556
26,1946,9.1,-12.72222222
27,1947,9.8,-12.33333333
28,1948,7.4,-13.66666667
29,1949,11.1,-11.61111111
30,1950,12.9,-10.61111111
31,1951,11.4,-11.44444444
32,1952,9,-12.77777778
33,1953,8.1,-13.27777778
34,1954,10.8,-11.77777778
35,1955,5.3,-14.83333333
36,1956,7,-13.88888889
37,1957,9.9,-12.27777778
38,1958,11.3,-11.5
39,1959,7.5,-13.61111111
40,1960,8.1,-13.27777778
41,1961,8.2,-13.22222222
42,1962,12.6,-10.77777778
43,1963,10.3,-12.05555556
44,1964,4.6,-15.22222222
45,1965,9.1,-12.72222222
46,1966,8.4,-13.11111111
47,1967,10.5,-11.94444444
48,1968,10,-12.22222222
49,1969,8.9,-12.83333333
50,1970,7.1,-13.83333333
51,1971,7.7,-13.5
52,1972,10.4,-12
53,1973,11.4,-11.44444444
54,1974,5.6,-14.66666667
55,1975,5.8,-14.55555556
56,1976,8.3,-13.16666667
57,1977,10.6,-11.88888889
58,1978,10.7,-11.83333333
59,1979,12.8,-10.66666667
60,1980,8.6,-13
61,1981,11.3,-11.5
62,1982,9.3,-12.61111111
63,1983,9.3,-12.61111111
64,1984,7.3,-13.72222222
65,1985,10.6,-11.88888889
66,1986,11.2,-11.55555556
67,1987,9.9,-12.27777778
68,1988,8.3,-13.16666667
69,1989,13.4,-10.33333333
70,1990,9.9,-12.27777778
71,1991,9.7,-12.38888889
72,1992,9.6,-12.44444444
73,1993,13.7,-10.16666667
74,1994,9.2,-12.66666667
75,1995,12.4,-10.88888889
76,1996,12.6,-10.77777778
77,1997,12.5,-10.83333333
78,1998,16.9,-8.388888889
79,1999,10.4,-12
80,2000,10.8,-11.77777778
81,2001,10.5,-11.94444444
82,2002,13.6,-10.22222222
83,2003,12.9,-10.61111111
84,2004,12.6,-10.77777778
85,2005,13.5,-10.27777778
86,2006,13.3,-10.38888889
87,2007,15.3,-9.277777778
88,2008,13.3,-10.38888889
89,2009,13.4,-10.33333333
90,2010,14.3,-9.833333333
91,2011,14,-10
92,2012,13.1,-10.5
93,2013,14.5,-9.722222222
94,2014,15,-9.444444444
95,2015,14.2,-9.888888889
96,2016,19,-7.222222222
97,2017,18.5,-7.5
98,2018,17,-8.333333333
99,2019,20.9,-6.166666667
100,2020,14.7,-9.611111111