Every September in Glens Falls, NY from 1893 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.
| Year | Mean, °F | Rank | High, °F | Rank | Low, °F | Rank | Precipitation, in | Rank | Days missing |
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| 2026 | 59.9 | 65 | 70.5 | 78 | 49.4 | 48 | 2.56 | 72 | 0 |
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| 2025 | 60.3 | 55 | 75.4 | 10 | 45.3 | 106 | 2.89 | 60 | 0 |
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| 2024 | 61.5 | 31 | 74.7 | 18 | 48.4 | 64 | 1.48 | 99 | 0 |
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| 2023 | 62.6 | 18 | 73.5 | 31 | 51.6 | 20 | 1.89 | 88 | 0 |
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| 2022 | 59.3 | 78 | 70.5 | 78 | 48.1 | 72 | 4.15 | 34 | 0 |
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| 2021 | 60.8 | 42 | 72.2 | 45 | 49.4 | 48 | 4.18 | 31 | 0 |
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| 2020 | 58.1 | 96 | 71.4 | 64 | 44.7 | 113 | 2.80 | 65 | 0 |
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| 2019 | 59 | 82 | 72.1 | 47 | 45.8 | 102 | 2.06 | 82 | 0 |
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| 2018 | 63.2 | 13 | 72.7 | 36 | 53.8 | 5 | 2.90 | 59 | 0 |
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| 2017 | 62.6 | 18 | 74.9 | 15 | 50.3 | 31 | 2.32 | 78 | 0 |
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| 2016 | | | 76 | 7 | | | 1.21 | 109 | 4 |
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| 2015 | 65.4 | 2 | 78.1 | 2 | 52.6 | 11 | 4.46 | 28 | 0 |
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| 2014 | 60.4 | 51 | 72.7 | 36 | 48 | 73 | 1.13 | 112 | 0 |
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| 2013 | 58 | 97 | 71 | 68 | 44.9 | 111 | 2.43 | 74 | 0 |
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| 2012 | 58.4 | 92 | 71 | 68 | 45.8 | 102 | 5.15 | 16 | 0 |
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| 2011 | 63.5 | 9 | 72.9 | 34 | 54.1 | 2 | 6.61 | 6 | 0 |
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| 2010 | 60.2 | 56 | 72.1 | 47 | 48.4 | 64 | 4.61 | 24 | 0 |
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| 2009 | 57.4 | 105 | 69.5 | 95 | 45.2 | 108 | 2.33 | 77 | 0 |
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| 2008 | 60.6 | 45 | 72.1 | 47 | 49.1 | 52 | 2.40 | 76 | 0 |
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| 2007 | 60.2 | 56 | 74.7 | 18 | 45.6 | 104 | 2.79 | 66 | 0 |
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| 2006 | 57.4 | 105 | 68.4 | 103 | 46.3 | 98 | 2.56 | 72 | 0 |
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| 2005 | 62 | 27 | 75.3 | 11 | 48.8 | 58 | 2.85 | 63 | 0 |
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| 2004 | 60.1 | 61 | 71.8 | 56 | 48.3 | 66 | 3.46 | 46 | 0 |
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| 2003 | 60.2 | 56 | 72.1 | 47 | 48.3 | 66 | 6.83 | 5 | 0 |
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| 2002 | 62.1 | 26 | 75.1 | 14 | 49 | 54 | 4.97 | 19 | 0 |
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| 2001 | 57.9 | 100 | 71.6 | 59 | 44.2 | 115 | 2.91 | 58 | 0 |
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| 2000 | 56.9 | 112 | 68.6 | 101 | 45.1 | 109 | 1.40 | 101 | 0 |
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| 1999 | 63.2 | 13 | 73.9 | 25 | 52.4 | 12 | 7.51 | 3 | 0 |
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| 1998 | 61.2 | 37 | 72 | 52 | 50.3 | 31 | 1.27 | 108 | 0 |
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| 1997 | 59.2 | 81 | 70.3 | 82 | 48.2 | 69 | 3.34 | 49 | 0 |
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| 1996 | 60.7 | 43 | 70.6 | 75 | 50.8 | 26 | 4.18 | 31 | 0 |
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| 1995 | 55.8 | 116 | 68.5 | 102 | 43 | 119 | 2.16 | 80 | 0 |
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| 1994 | 59.3 | 78 | 69.7 | 91 | 49 | 54 | 2.88 | 61 | 0 |
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| 1993 | 58.3 | 93 | 68.1 | 107 | 48.5 | 62 | 2.12 | 81 | 0 |
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| 1992 | 59.4 | 75 | 70.5 | 78 | 48.3 | 66 | 3.75 | 41 | 0 |
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| 1991 | 57 | 110 | 69.8 | 87 | 44.1 | 116 | 3.49 | 44 | 0 |
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| 1990 | 58.8 | 85 | 69.8 | 87 | 47.8 | 78 | 1.75 | 94 | 0 |
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| 1989 | 60.5 | 49 | 71.5 | 61 | 49.6 | 41 | 4.88 | 22 | 0 |
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| 1988 | 57.4 | 105 | 69.7 | 91 | 45 | 110 | 1.13 | 112 | 0 |
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| 1987 | 58.7 | 87 | 67.9 | 111 | 49.5 | 46 | 7.75 | 1 | 1 |
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| 1986 | 57 | 110 | 67.5 | 115 | 46.5 | 96 | 2.87 | 62 | 0 |
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| 1985 | 59.7 | 69 | 70.8 | 73 | 48.6 | 61 | 2.97 | 55 | 0 |
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| 1984 | 55.1 | 119 | 66.1 | 121 | 44 | 117 | 1.67 | 95 | 0 |
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| 1983 | 62.7 | 17 | 75.3 | 11 | 50 | 33 | 1.95 | 85 | 0 |
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| 1982 | 59.4 | 75 | 71.7 | 57 | 47.1 | 84 | 2.04 | 83 | 0 |
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| 1981 | 58.9 | 83 | 67.8 | 112 | 50 | 33 | 6.40 | 9 | 0 |
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| 1980 | 59.6 | 73 | 72 | 52 | 47.1 | 84 | 2.99 | 53 | 0 |
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| 1979 | 58 | 97 | 70.7 | 74 | 45.3 | 106 | 4.54 | 26 | 0 |
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| 1978 | 54.9 | 120 | 68.1 | 107 | 41.7 | 122 | 1.89 | 88 | 0 |
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| 1977 | 58.8 | 85 | 67.6 | 114 | 50 | 33 | 5.90 | 12 | 0 |
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| 1976 | 56.8 | 114 | 69.2 | 96 | 44.4 | 114 | 3.74 | 42 | 0 |
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| 1975 | 56.9 | 112 | 67.2 | 117 | 46.7 | 92 | 6.42 | 8 | 0 |
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| 1974 | 57.5 | 103 | 68.4 | 103 | 46.7 | 92 | 6.51 | 7 | 0 |
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| 1973 | 58.7 | 87 | 71.6 | 59 | 45.9 | 101 | 2.95 | 56 | 0 |
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| 1972 | 59.7 | 69 | 72.4 | 43 | 46.9 | 89 | 1.38 | 102 | 0 |
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| 1971 | 63.7 | 6 | 73.6 | 29 | 53.9 | 4 | 1.35 | 104 | 0 |
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| 1970 | 59.7 | 69 | 69.8 | 87 | 49.6 | 41 | 2.74 | 67 | 0 |
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| 1969 | 60.1 | 61 | 71.2 | 67 | 49 | 54 | 1.09 | 114 | 0 |
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| 1968 | 62.3 | 25 | 75.3 | 11 | 49.4 | 48 | 1.82 | 92 | 0 |
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| 1967 | 60.9 | 39 | 73.8 | 27 | 47.9 | 75 | 1.38 | 102 | 0 |
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| 1966 | 54.7 | 121 | 65.8 | 122 | 43.6 | 118 | 5.15 | 16 | 0 |
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| 1965 | 60.4 | 51 | 69.6 | 94 | 51.1 | 23 | 3.95 | 36 | 0 |
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| 1964 | 58.7 | 87 | 70.9 | 71 | 46.6 | 94 | 0.10 | 121 | 0 |
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| 1963 | 55.4 | 118 | 68 | 109 | 42.7 | 121 | 1.45 | 100 | 0 |
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| 1962 | 57.1 | 108 | 67.3 | 116 | 46.9 | 89 | 2.59 | 70 | 0 |
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| 1961 | 67.5 | 1 | 78.3 | 1 | 56.7 | 1 | 1.32 | 106 | 0 |
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| 1960 | 61 | 38 | 70.6 | 75 | 51.4 | 22 | 4.55 | 25 | 0 |
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| 1959 | 64 | 5 | 74.8 | 17 | 53.2 | 8 | 1.86 | 91 | 0 |
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| 1958 | 59.4 | 75 | 69.2 | 96 | 49.6 | 41 | 3.85 | 39 | 0 |
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| 1957 | 60.5 | 49 | 72.6 | 39 | 48.5 | 62 | 2.57 | 71 | 0 |
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| 1956 | 55.7 | 117 | 66.6 | 119 | 44.9 | 111 | 4.77 | 23 | 0 |
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| 1955 | 58.7 | 87 | 70.4 | 81 | 47 | 87 | 3.07 | 50 | 0 |
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| 1954 | 58.7 | 87 | 68.3 | 105 | 49.1 | 52 | 2.82 | 64 | 0 |
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| 1953 | 60.1 | 61 | 72.3 | 44 | 47.9 | 75 | 1.89 | 88 | 0 |
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| 1952 | 60.1 | 61 | 72.7 | 36 | 47.6 | 81 | 3.41 | 48 | 0 |
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| 1951 | 58.2 | 95 | 69.8 | 87 | 46.6 | 94 | 2.99 | 53 | 0 |
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| 1950 | 56 | 115 | 66.4 | 120 | 45.5 | 105 | 1.66 | 96 | 0 |
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| 1949 | 57.5 | 103 | 68.2 | 106 | 46.8 | 91 | 3.91 | 37 | 0 |
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| 1948 | | | | | | | 0.20 | 120 | 30 |
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| 1947 | 60.9 | 39 | 73.9 | 25 | 47.9 | 75 | 0.60 | 119 | 0 |
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| 1946 | 62.6 | 18 | 75.8 | 9 | 49.4 | 48 | 2.94 | 57 | 0 |
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| 1944 | 61.7 | 30 | 71.5 | 61 | 52 | 17 | 4.89 | 21 | 0 |
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| 1943 | 60.4 | 51 | 72.8 | 35 | 48 | 73 | 1.78 | 93 | 0 |
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| 1942 | 62.4 | 21 | 74.9 | 15 | 49.8 | 37 | 4.53 | 27 | 0 |
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| 1941 | | | | | | | 1.90 | 87 | 30 |
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| 1933 | 61.5 | 31 | 71.5 | 61 | 52 | 17 | 1.95 | 85 | 2 |
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| 1932 | 60.2 | 56 | 72.6 | 39 | 47.8 | 78 | 1.15 | 111 | 0 |
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| 1930 | 63.5 | 9 | 74.7 | 18 | 52.2 | 15 | 2.42 | 75 | 0 |
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| 1929 | 61.9 | 28 | 73.4 | 32 | 51 | 24 | | | 1 |
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| 1928 | 57.9 | 100 | 69.7 | 91 | 46.2 | 99 | 0.66 | 118 | 0 |
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| 1927 | 60.9 | 39 | 72.1 | 47 | 49.8 | 37 | 0.71 | 117 | 0 |
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| 1926 | 59.7 | 69 | 70.6 | 75 | 48.8 | 58 | 2.70 | 68 | 0 |
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| 1925 | 59.9 | 65 | 69 | 98 | 50.8 | 26 | 5.16 | 15 | 0 |
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| 1924 | 58 | 97 | 67.8 | 112 | 48.2 | 69 | 6.06 | 11 | 0 |
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| 1923 | 61.4 | 35 | 70.9 | 71 | 51.8 | 19 | 4.36 | 29 | 0 |
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| 1922 | 62.4 | 21 | 73.8 | 27 | 51 | 24 | | | 0 |
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| 1921 | 65 | 4 | 77 | 5 | 53 | 10 | 3.02 | 51 | 0 |
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| 1920 | 62.9 | 16 | 73.6 | 29 | 52.2 | 15 | 4.16 | 33 | 0 |
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| 1919 | 61.5 | 31 | 71.3 | 66 | 51.6 | 20 | 3.96 | 35 | 0 |
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| 1918 | 57.1 | 108 | 67.1 | 118 | 47.1 | 84 | 5.65 | 13 | 0 |
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| 1917 | 59.3 | 78 | 72.2 | 45 | 46.2 | 99 | 1.28 | 107 | 1 |
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| 1916 | 61.9 | 28 | 74 | 22 | 49.8 | 37 | 3.02 | 51 | 0 |
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| 1915 | 65.3 | 3 | 77.1 | 4 | 53.8 | 5 | 1.56 | 97 | 1 |
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| 1914 | 60.6 | 45 | 74.4 | 21 | 47 | 87 | 1.01 | 115 | 1 |
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| 1913 | 60.6 | 45 | 73.4 | 32 | 47.7 | 80 | 2.02 | 84 | 0 |
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| 1912 | 60.4 | 51 | 69.9 | 86 | 50.8 | 26 | 5.57 | 14 | 1 |
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| 1911 | 60.2 | 56 | 71 | 68 | 49.6 | 41 | 4.31 | 30 | 1 |
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| 1910 | 60.7 | 43 | 71.9 | 54 | 49.5 | 46 | 5.12 | 18 | 0 |
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| 1909 | 59.8 | 67 | 71.4 | 64 | 48.2 | 69 | 3.47 | 45 | 0 |
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| 1908 | 63.7 | 6 | 77.7 | 3 | 49.7 | 40 | 1.34 | 105 | 0 |
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| 1907 | 61.3 | 36 | 68.9 | 99 | 53.7 | 7 | 7.61 | 2 | 0 |
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| 1906 | 63.4 | 11 | 76.1 | 6 | 50.7 | 30 | 2.62 | 69 | 0 |
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| 1905 | 59.5 | 74 | 68.9 | 99 | 50 | 33 | 6.30 | 10 | 1 |
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| 1904 | 57.7 | 102 | 68 | 109 | 47.4 | 83 | 4.96 | 20 | 0 |
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| 1903 | 60.6 | 45 | 72.5 | 41 | 48.7 | 60 | 1.53 | 98 | 0 |
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| 1902 | 62.4 | 21 | 72.5 | 41 | 52.4 | 12 | 3.85 | 39 | 0 |
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| 1901 | 62.4 | 21 | 71.7 | 57 | 53.1 | 9 | | | 0 |
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| 1900 | 63 | 15 | 71.9 | 54 | 54 | 3 | 0.94 | 116 | 0 |
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| 1899 | 59.8 | 67 | 70 | 85 | 49.6 | 41 | 7.10 | 4 | 0 |
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| 1898 | 63.3 | 12 | 74 | 22 | 52.4 | 12 | 3.42 | 47 | 2 |
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| 1897 | 58.3 | 93 | 70.3 | 82 | 46.4 | 97 | 1.19 | 110 | 0 |
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| 1896 | 58.9 | 83 | 70.1 | 84 | 47.6 | 81 | | | 0 |
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| 1895 | 61.5 | 31 | 74 | 22 | 49 | 54 | 2.18 | 79 | 0 |
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| 1894 | 63.6 | 8 | 75.9 | 8 | 50.8 | 26 | 3.71 | 43 | 2 |
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| 1893 | 54.3 | 122 | 65.8 | 122 | 42.8 | 120 | 3.87 | 38 | 0 |
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