Year,Value,Lake Superior,Temp,Jan,(°F)
1940,11.492
1941,13.54
1942,12.748
1943,4.737
1944,22.564
1945,8.36
1946,12.941
1947,13.449
1948,6.86
1949,18.18
1950,7.436
1951,10.608
1952,10.315
1953,17.986
1954,8.69
1955,17.555
1956,14.733
1957,4.423
1958,17.554
1959,3.19
1960,15.039
1961,8.039
1962,7.645
1963,3.165
1964,19.731
1965,8.102
1966,8.402
1967,11.515
1968,9.295
1969,13.947
1970,9.415
1971,7.954
1972,7.988
1973,16.34
1974,11.7
1975,18.775
1976,10.023
1977,4.165
1978,9.094
1979,4.784
1980,14.127
1981,8.266
1982,3.304
1983,17.845
1984,6.445
1985,8.857
1986,9.757
1987,19.734
1988,11.749
1989,17.714
1990,18.101
1991,9.777
1992,16.671
1993,14.409
1994,-2.346
1995,19.489
1996,5.076
1997,10.116
1998,20.034
1999,11.444
2000,14.884
2001,16.995
2002,22.687
2003,10.222
2004,6.108
2005,9.66
2006,25.526
2007,21.33
2008,17.434
2009,6.695
2010,16.593
2011,10.432
2012,21.804
2013,17.63
2014,9.774
2015,16.758
2016,21.514
2017,24.118
2018,19.134
2019,15.365
2020,24.657
2021,25.19
2022,14.844
2023,24.564
2024,23.62
2025,18.338