"time"	"LakeHuron"
1875	580.38
1876	581.86
1877	580.97
1878	580.8
1879	579.79
1880	580.39
1881	580.42
1882	580.82
1883	581.4
1884	581.32
1885	581.44
1886	581.68
1887	581.17
1888	580.53
1889	580.01
1890	579.91
1891	579.14
1892	579.16
1893	579.55
1894	579.67
1895	578.44
1896	578.24
1897	579.1
1898	579.09
1899	579.35
1900	578.82
1901	579.32
1902	579.01
1903	579
1904	579.8
1905	579.83
1906	579.72
1907	579.89
1908	580.01
1909	579.37
1910	578.69
1911	578.19
1912	578.67
1913	579.55
1914	578.92
1915	578.09
1916	579.37
1917	580.13
1918	580.14
1919	579.51
1920	579.24
1921	578.66
1922	578.86
1923	578.05
1924	577.79
1925	576.75
1926	576.75
1927	577.82
1928	578.64
1929	580.58
1930	579.48
1931	577.38
1932	576.9
1933	576.94
1934	576.24
1935	576.84
1936	576.85
1937	576.9
1938	577.79
1939	578.18
1940	577.51
1941	577.23
1942	578.42
1943	579.61
1944	579.05
1945	579.26
1946	579.22
1947	579.38
1948	579.1
1949	577.95
1950	578.12
1951	579.75
1952	580.85
1953	580.41
1954	579.96
1955	579.61
1956	578.76
1957	578.18
1958	577.21
1959	577.13
1960	579.1
1961	578.25
1962	577.91
1963	576.89
1964	575.96
1965	576.8
1966	577.68
1967	578.38
1968	578.52
1969	579.74
1970	579.31
1971	579.89
1972	579.96