wolfsun.dat

这是《Numerical Methods with MATLAB: Implementation and Application》一书的配书程序（Matlab）

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