Every 1 to 9 October in Glasgow, MT 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 | 57.6 | 10 | 73.1 | 14 | 42 | 14 | 0.00 | 106 | 0 |
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| 2025 | 55.5 | 18 | 70.4 | 27 | 40.6 | 21 | 0.02 | 83 | 0 |
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| 2024 | 57.9 | 8 | 75.4 | 6 | 40.3 | 24 | 0.00 | 106 | 0 |
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| 2023 | 53.5 | 35 | 66.6 | 47 | 40.4 | 23 | 0.38 | 36 | 0 |
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| 2022 | 54.8 | 22 | 65.6 | 54 | 44 | 6 | 0.73 | 19 | 0 |
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| 2021 | 62.6 | 2 | 78 | 2 | 47.1 | 2 | 0.01 | 87 | 0 |
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| 2020 | 56.6 | 16 | 71 | 21 | 42.1 | 12 | 0.03 | 82 | 0 |
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| 2019 | 44.7 | 109 | 54.2 | 116 | 35.2 | 73 | 0.22 | 44 | 0 |
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| 2018 | 41.7 | 120 | 50.9 | 120 | 32.6 | 104 | 1.03 | 10 | 0 |
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| 2017 | 42.9 | 118 | 54.9 | 113 | 30.9 | 118 | 0.75 | 18 | 0 |
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| 2016 | 46.7 | 98 | 55.2 | 110 | 38.1 | 44 | 2.31 | 1 | 0 |
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| 2015 | 53.8 | 30 | 65.1 | 58 | 42.4 | 11 | 0.84 | 14 | 0 |
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| 2014 | 48.1 | 85 | 60.6 | 88 | 35.7 | 65 | 0.04 | 79 | 0 |
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| 2013 | 48.6 | 78 | 63 | 71 | 34.1 | 88 | 0.00 | 106 | 0 |
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| 2012 | 43.3 | 116 | 55 | 112 | 31.7 | 113 | 0.23 | 43 | 0 |
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| 2011 | 61.6 | 3 | 74.6 | 8 | 48.7 | 1 | 0.54 | 26 | 0 |
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| 2010 | 58.1 | 6 | 72.3 | 18 | 43.9 | 7 | 0.06 | 70 | 0 |
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| 2009 | 39 | 124 | 47.4 | 125 | 30.6 | 120 | 0.10 | 57 | 0 |
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| 2008 | 55.3 | 19 | 69.7 | 29 | 41 | 18 | 0.36 | 38 | 0 |
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| 2007 | 47.3 | 93 | 58.2 | 99 | 36.3 | 62 | 1.53 | 4 | 0 |
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| 2006 | 51.8 | 47 | 64 | 66 | 39.7 | 31 | 0.81 | 16 | 0 |
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| 2005 | 46.7 | 98 | 56.8 | 104 | 36.7 | 57 | 0.39 | 34 | 0 |
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| 2004 | 52.2 | 42 | 70.8 | 24 | 33.7 | 94 | 0.00 | 106 | 0 |
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| 2003 | 57.2 | 11 | 75.3 | 7 | 39.1 | 36 | trace | 91 | 0 |
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| 2002 | 44.8 | 107 | 55.9 | 108 | 33.7 | 94 | 0.19 | 49 | 0 |
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| 2001 | 48.9 | 74 | 63 | 71 | 34.8 | 81 | trace | 91 | 0 |
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| 2000 | 39.9 | 123 | 53.2 | 118 | 26.7 | 128 | trace | 91 | 0 |
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| 1999 | 45.4 | 104 | 59 | 95 | 31.9 | 112 | 0.06 | 70 | 0 |
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| 1998 | 51.3 | 50 | 62.3 | 78 | 40.2 | 27 | 0.48 | 30 | 0 |
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| 1997 | 52.8 | 37 | 65.9 | 52 | 39.8 | 30 | 0.05 | 76 | 0 |
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| 1996 | 49.8 | 69 | 62.8 | 73 | 36.9 | 56 | trace | 91 | 0 |
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| 1995 | 46.9 | 96 | 57.2 | 103 | 36.6 | 58 | 0.53 | 27 | 0 |
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| 1994 | 47.9 | 87 | 59.4 | 93 | 36.4 | 60 | 0.81 | 16 | 0 |
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| 1993 | 48.2 | 83 | 61 | 87 | 35.3 | 71 | 0.44 | 32 | 0 |
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| 1992 | 53.6 | 33 | 67.1 | 44 | 40.1 | 29 | 0.49 | 28 | 0 |
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| 1991 | 48 | 86 | 62.4 | 76 | 33.6 | 98 | 0.07 | 62 | 0 |
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| 1990 | 47.9 | 87 | 62.2 | 79 | 33.7 | 94 | 0.04 | 79 | 0 |
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| 1989 | 44.3 | 112 | 54.6 | 114 | 34 | 89 | 0.58 | 25 | 0 |
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| 1988 | 51.3 | 50 | 65.3 | 55 | 37.2 | 52 | 0.00 | 106 | 0 |
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| 1987 | 50.4 | 62 | 63.8 | 67 | 37 | 54 | trace | 91 | 0 |
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| 1986 | 50.7 | 59 | 58.3 | 98 | 43.1 | 10 | 0.70 | 20 | 0 |
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| 1985 | 37.2 | 126 | 47.6 | 124 | 26.9 | 127 | 0.49 | 28 | 0 |
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| 1984 | 57.7 | 9 | 74.2 | 9 | 41.1 | 17 | 0.00 | 106 | 0 |
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| 1983 | 48.9 | 74 | 60.3 | 89 | 37.6 | 49 | trace | 91 | 0 |
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| 1982 | 44.1 | 113 | 52.4 | 119 | 35.7 | 65 | 0.48 | 30 | 0 |
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| 1981 | 51.1 | 55 | 64.6 | 63 | 37.7 | 47 | 0.12 | 55 | 0 |
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| 1980 | 60.8 | 4 | 77.2 | 3 | 44.4 | 5 | 0.04 | 79 | 0 |
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| 1979 | 53.7 | 32 | 67.9 | 38 | 39.6 | 33 | 0.08 | 60 | 0 |
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| 1978 | 47.9 | 87 | 60.3 | 89 | 35.4 | 69 | 0.06 | 70 | 0 |
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| 1977 | 42.1 | 119 | 50.7 | 121 | 33.6 | 98 | 0.07 | 62 | 0 |
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| 1976 | 50.1 | 66 | 65.2 | 57 | 34.9 | 76 | 0.07 | 62 | 0 |
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| 1975 | 53.2 | 36 | 67.4 | 40 | 38.9 | 37 | 0.65 | 23 | 0 |
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| 1974 | 48.6 | 78 | 63.4 | 70 | 33.8 | 91 | 0.14 | 53 | 0 |
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| 1973 | 50.2 | 65 | 62.4 | 76 | 38 | 45 | 0.22 | 44 | 0 |
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| 1972 | 54.1 | 28 | 68.8 | 33 | 39.4 | 35 | trace | 91 | 0 |
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| 1971 | 52.4 | 40 | 66.3 | 49 | 38.6 | 39 | 0.07 | 62 | 0 |
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| 1970 | 47.9 | 87 | 60.3 | 89 | 35.6 | 68 | 0.35 | 39 | 0 |
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| 1969 | 46.3 | 101 | 54.3 | 115 | 38.2 | 42 | 1.09 | 9 | 0 |
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| 1968 | 45.2 | 105 | 58.8 | 96 | 31.6 | 115 | 0.02 | 83 | 0 |
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| 1967 | 48.8 | 76 | 57.3 | 102 | 40.3 | 24 | 0.99 | 11 | 0 |
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| 1966 | 51.7 | 48 | 65 | 59 | 38.4 | 40 | 0.07 | 62 | 0 |
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| 1965 | 57.2 | 11 | 72.8 | 16 | 41.7 | 15 | trace | 91 | 0 |
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| 1964 | 49.9 | 67 | 65.3 | 55 | 34.4 | 85 | 0.02 | 83 | 0 |
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| 1963 | 60 | 5 | 73.7 | 11 | 46.3 | 3 | 0.07 | 62 | 0 |
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| 1962 | 54.7 | 23 | 66.1 | 51 | 43.3 | 8 | 0.10 | 57 | 0 |
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| 1961 | 49.9 | 67 | 63.7 | 69 | 36.2 | 63 | trace | 91 | 0 |
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| 1960 | 57 | 14 | 70.7 | 26 | 43.3 | 8 | 0.01 | 87 | 0 |
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| 1959 | 40.1 | 122 | 50.1 | 122 | 30 | 121 | 0.96 | 12 | 0 |
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| 1958 | 51 | 56 | 64.4 | 64 | 37.6 | 49 | 0.06 | 70 | 0 |
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| 1957 | 44 | 114 | 56 | 107 | 32 | 111 | 0.01 | 87 | 0 |
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| 1956 | 51.3 | 50 | 67.2 | 43 | 35.3 | 71 | trace | 91 | 0 |
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| 1955 | 53.8 | 30 | 69.2 | 30 | 38.3 | 41 | trace | 91 | 0 |
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| 1954 | 47 | 95 | 61.4 | 85 | 32.6 | 104 | trace | 91 | 0 |
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| 1953 | 55.2 | 20 | 73.2 | 13 | 37.2 | 52 | trace | 91 | 0 |
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| 1952 | 44.8 | 107 | 61.9 | 83 | 27.8 | 126 | 0.01 | 87 | 0 |
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| 1951 | 53.6 | 33 | 67.6 | 39 | 39.6 | 33 | 0.05 | 76 | 0 |
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| 1950 | 46 | 102 | 58.8 | 96 | 33.2 | 101 | 0.16 | 52 | 0 |
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| 1949 | 48.2 | 83 | 62 | 82 | 34.4 | 85 | 0.17 | 50 | 0 |
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| 1948 | 51 | 56 | 68 | 35 | 34 | 89 | trace | 91 | 0 |
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| 1947 | 54.4 | 26 | 68 | 35 | 40.9 | 19 | 0.08 | 60 | 0 |
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| 1946 | 46.4 | 100 | 57.9 | 101 | 34.9 | 76 | 0.32 | 40 | 0 |
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| 1945 | 52.8 | 37 | 70.9 | 23 | 34.8 | 81 | trace | 91 | 0 |
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| 1944 | 52.2 | 42 | 66.8 | 45 | 37.6 | 49 | 0.07 | 62 | 0 |
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| 1943 | 63.7 | 1 | 86.6 | 1 | 40.8 | 20 | 0.00 | 106 | 0 |
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| 1942 | 56.9 | 15 | 75.9 | 4 | 38 | 45 | 0.02 | 83 | 0 |
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| 1941 | 45.1 | 106 | 56.4 | 106 | 33.8 | 91 | 0.17 | 50 | 0 |
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| 1940 | 54.3 | 27 | 67.4 | 40 | 41.2 | 16 | 0.59 | 24 | 0 |
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| 1939 | 47.2 | 94 | 59.4 | 93 | 35 | 75 | 0.82 | 15 | 0 |
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| 1938 | 57.2 | 11 | 69.1 | 32 | 45.2 | 4 | 0.09 | 59 | 0 |
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| 1937 | 50.4 | 62 | 61.2 | 86 | 39.7 | 31 | 1.63 | 3 | 0 |
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| 1936 | 51.2 | 53 | 72.4 | 17 | 29.9 | 122 | 0.00 | 106 | 0 |
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| 1935 | 52.1 | 45 | 69.9 | 28 | 34.3 | 87 | 0.00 | 106 | 0 |
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| 1934 | 54.7 | 23 | 73.6 | 12 | 35.9 | 64 | 0.00 | 106 | 0 |
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| 1933 | 53.9 | 29 | 72.9 | 15 | 34.9 | 76 | 0.00 | 106 | 0 |
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| 1932 | | | | | | | | | 1 |
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| 1931 | 48.5 | 80 | 64.8 | 61 | 32.2 | 109 | 0.00 | 106 | 0 |
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| 1930 | 52.5 | 39 | 64.4 | 64 | 40.6 | 21 | 0.69 | 21 | 0 |
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| 1929 | 52.2 | 42 | 70.8 | 24 | 33.6 | 98 | 0.06 | 70 | 0 |
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| 1928 | 50.6 | 60 | 68.6 | 34 | 32.6 | 104 | 0.20 | 48 | 0 |
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| 1927 | 44.5 | 111 | 55.2 | 110 | 33.8 | 91 | 1.32 | 6 | 0 |
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| 1926 | 52.4 | 40 | 66.6 | 47 | 38.2 | 42 | 0.00 | 106 | 0 |
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| 1925 | 37.8 | 125 | 46.4 | 126 | 29.1 | 124 | 0.66 | 22 | 0 |
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| 1924 | 47.4 | 91 | 60 | 92 | 34.9 | 76 | 0.11 | 56 | 0 |
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| 1923 | 55.6 | 17 | 71 | 21 | 40.2 | 27 | 0.00 | 106 | 0 |
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| 1922 | 54.7 | 23 | 74.1 | 10 | 35.2 | 73 | 0.00 | 106 | 0 |
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| 1921 | 49.8 | 69 | 67.3 | 42 | 32.3 | 108 | 0.00 | 106 | 0 |
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| 1920 | 58.1 | 6 | 75.9 | 4 | 40.3 | 24 | 0.00 | 106 | 0 |
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| 1919 | 48.4 | 81 | 63.8 | 67 | 33.1 | 102 | 0.27 | 42 | 0 |
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| 1918 | 51.7 | 48 | 66.3 | 49 | 37 | 54 | 0.21 | 47 | 0 |
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| 1917 | 55.2 | 20 | 71.6 | 20 | 38.8 | 38 | 0.00 | 106 | 0 |
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| 1916 | 36 | 127 | 46 | 127 | 26 | 129 | 0.38 | 36 | 0 |
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| 1915 | 47.4 | 91 | 62.7 | 74 | 32.2 | 109 | 0.39 | 34 | 0 |
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| 1914 | 49.3 | 71 | 62.2 | 79 | 36.4 | 60 | 1.28 | 7 | 0 |
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| 1913 | 43.1 | 117 | 53.7 | 117 | 32.6 | 104 | 2.23 | 2 | 0 |
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| 1912 | 44.7 | 109 | 55.7 | 109 | 33.7 | 94 | 0.05 | 76 | 0 |
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| 1911 | 51.2 | 53 | 64.7 | 62 | 37.7 | 47 | | | 0 |
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| 1907 | 49.2 | 72 | 66.7 | 46 | 31.7 | 113 | 0.00 | 106 | 0 |
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| 1906 | 49.2 | 72 | 61.8 | 84 | 36.6 | 58 | 0.00 | 106 | 0 |
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| 1905 | | | | | 42.1 | 12 | 0.00 | 106 | 3 |
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| 1904 | | | | | 34.8 | 81 | 0.22 | 44 | 3 |
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| 1903 | 45.5 | 103 | 62.6 | 75 | 28.4 | 125 | 0.07 | 62 | 0 |
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| 1902 | 50.8 | 58 | 71.9 | 19 | 29.7 | 123 | 0.00 | 106 | 0 |
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| 1901 | 50.3 | 64 | 65.8 | 53 | 34.9 | 76 | 0.00 | 106 | 0 |
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| 1900 | 40.7 | 121 | 49.8 | 123 | 31.6 | 115 | 0.44 | 32 | 0 |
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| 1899 | 50.6 | 60 | 68 | 35 | 33.1 | 102 | 0.06 | 70 | 0 |
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| 1898 | 35.3 | 128 | 46 | 127 | 24.6 | 130 | 1.20 | 8 | 0 |
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| 1897 | 51.9 | 46 | 69.2 | 30 | 34.6 | 84 | 0.95 | 13 | 0 |
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| 1896 | 48.8 | 76 | 62.2 | 79 | 35.4 | 69 | 0.14 | 53 | 0 |
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| 1895 | 48.3 | 82 | 65 | 59 | 31.6 | 115 | 0.30 | 41 | 0 |
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| 1894 | 43.8 | 115 | 56.8 | 104 | 30.9 | 118 | 1.51 | 5 | 0 |
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| 1893 | 46.9 | 96 | 58.2 | 99 | 35.7 | 65 | | | 0 |
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