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Wolfer Sunspot Index
Year Wolfer_Index
1875 17
1876 11.3
1877 12.4
1878 3.4
1879 6
1880 32.2
1881 54.3
1882 59.4
1883 63.7
1884 63.5
1885 51.8
1886 25.5
1887 13.1
1888 6.7
1889 6.2
1890 7.1
1891 35.7
1892 73
1893 85.2
1894 78
1895 63.9
1896 41.7
1897 26.2
1898 26.7
1899 12.1
1900 9.4
1901 2.7
1902 5.1
1903 24.4
1904 42.1
1905 63.3
1906 54.1
1907 61.7
1908 48.5
1909 43.9
1910 18.5
1911 5.7
1912 3.6
1913 1.4
1914 9.6
1915 47.4
1916 57
1917 104.2
1918 80.8
1919 63.5
1920 37.6
1921 26.1
1922 14.2
1923 5.8
1924 16.7
1925 44.4
1926 63.9
1927 68.8
1928 77.8
1929 64.9
1930 35.6
1931 21.1
1932 11.1
1933 5.5
1934 8.7
1935 36.1
1936 79.7
1937 114.4
1938 109.6
1939 88.8
1940 67.8
1941 47.5
1942 30.4
1943 16.3
1944 9.7
1945 33.2
1946 92.6
1947 151.6
1948 136.3
1949 134.7
1950 83.9
1951 69.4
1952 31.5
1953 13.9
1954 4.4
1955 38
1956 141.7
1957 190.2
1958 184.8
1959 159
1960 112.3
1961 53.9
1962 37.5
1963 27.9
1964 10.2
1965 15.1
1966 47
1967 93.8
1968 105.9
1969 105.5
1970 104.5
1971 66.6
1972 68.9
1973 38
1974 34.5
1975 15.5
1976 12.6
1977 27.5
1978 92.4
1979 155.4
1980 154.6
1981 139.3
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