January-April USHCN National Temperature Values
1900	40.711				
1901	39.329				
1902	40.079				
1903	39.683				
1904	38.788				
1905	38.834				
1906	40.329				
1907	41.099				
1908	41.808				
1909	40.552				
1910	41.907				
1911	41.49				
1912	37.15				
1913	39.244				
1914	40.413				
1915	40.651
1916	39.877
1917	37.928
1918	39.631
1919	40.53
1920	38.781
1921	43.538
1922	38.971
1923	39.397
1924	38.81
1925	42.932
1926	40.793
1927	42.2
1928	40.79
1929	38.75
1930	41.06
1931	41.809
1932	40.911
1933	40.606
1934	42.639
1935	41.508
1936	38.175
1937	38.326
1938	42.649
1939	41.003
1940	38.87
1941	40.813
1942	40.449
1943	40.691
1944	40.299
1945	42.052
1946	43.29
1947	39.921
1948	39.539
1949	39.687
1950	40.029
1951	39.979
1952	40.95
1953	42.791
1954	42.734
1955	39.999
1956	39.868
1957	40.947
1958	39.627
1959	40.268
1960	38.833
1961	41.275
1962	39.528
1963	40.034
1964	40.011
1965	39.42
1966	39.227
1967	41.45
1968	40.456
1969	39.23
1970	39.101
1971	39.714
1972	40.945
1973	40.793
1974	41.889
1975	39.328
1976	42.297
1977	40.554
1978	38.149
1979	37.319
1980	40.2
1981	42.982
1982	38.884
1983	41.379
1984	40.586
1985	40.228
1986	43.616
1987	42.542
1988	40.389
1989	41.047
1990	44.008
1991	42.745
1992	43.678
1993	39.753
1994	40.974
1995	42.19
1996	40.098
1997	41.136
1998	43.027
1999	43.237
2000	44.337