Every August in Kalispell, MT from 1899 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 | 64.1 | 58 | 81.3 | 49 | 47 | 80 | 1.10 | 50 | 0 |
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| 2025 | 66.1 | 23 | 82.4 | 38 | 49.8 | 33 | 0.67 | 84 | 0 |
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| 2024 | 66.5 | 18 | 82.1 | 45 | 50.5 | 13 | 2.00 | 19 | 1 |
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| 2023 | 66.8 | 16 | 83.8 | 26 | 49.9 | 30 | 2.95 | 7 | 0 |
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| 2022 | 67.5 | 10 | 86.9 | 4 | 48.2 | 58 | 0.14 | 115 | 0 |
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| 2021 | 64.9 | 44 | 80 | 59 | 49.7 | 34 | 1.76 | 27 | 0 |
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| 2020 | 64.6 | 49 | 83.6 | 28 | 45.5 | 100 | 0.29 | 105 | 0 |
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| 2019 | 64.7 | 46 | 82.5 | 37 | 46.8 | 83 | 0.68 | 81 | 0 |
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| 2018 | 63.4 | 73 | 82.4 | 38 | 44.4 | 114 | 0.19 | 113 | 0 |
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| 2017 | 65.7 | 30 | 85.1 | 11 | 46.3 | 92 | 0.16 | 114 | 0 |
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| 2016 | 64.2 | 54 | 81.4 | 48 | 47.1 | 78 | 1.08 | 52 | 0 |
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| 2015 | 65 | 40 | 84.5 | 18 | 45.5 | 100 | 0.13 | 118 | 0 |
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| 2014 | 65.4 | 34 | 81.2 | 50 | 49.7 | 34 | 1.46 | 32 | 0 |
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| 2013 | 67 | 15 | 84.2 | 21 | 49.9 | 30 | 1.30 | 39 | 0 |
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| 2012 | 64.2 | 54 | 84.1 | 23 | 44.2 | 118 | 0.30 | 104 | 0 |
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| 2011 | 65 | 40 | 84.4 | 19 | 45.5 | 100 | 0.47 | 94 | 0 |
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| 2010 | 62.1 | 93 | 78 | 83 | 46.2 | 94 | 1.39 | 34 | 0 |
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| 2009 | 64.4 | 51 | 80 | 59 | 48.7 | 50 | 1.16 | 43 | 0 |
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| 2008 | 64.7 | 46 | 82.2 | 43 | 47.1 | 78 | 0.94 | 63 | 0 |
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| 2007 | 64 | 62 | 83 | 33 | 44.9 | 108 | 0.27 | 107 | 0 |
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| 2006 | 62.4 | 87 | 80.9 | 54 | 43.8 | 121 | 0.62 | 88 | 0 |
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| 2005 | 61.9 | 98 | 80.4 | 56 | 43.5 | 124 | 0.31 | 103 | 0 |
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| 2004 | 65.3 | 35 | 79.1 | 70 | 51.5 | 5 | 2.49 | 13 | 0 |
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| 2003 | 67.5 | 10 | 86.9 | 4 | 48.1 | 61 | 0.33 | 101 | 0 |
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| 2002 | 61.2 | 110 | 77.5 | 87 | 44.8 | 111 | 1.20 | 42 | 0 |
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| 2001 | 65 | 40 | 85.7 | 7 | 44.2 | 118 | 0.06 | 123 | 0 |
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| 2000 | 63.5 | 68 | 84.2 | 21 | 42.9 | 126 | 0.26 | 108 | 0 |
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| 1999 | 66 | 24 | 81.8 | 46 | 50.3 | 17 | 1.06 | 53 | 0 |
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| 1998 | 65.2 | 36 | 85 | 12 | 45.5 | 100 | 0.34 | 99 | 0 |
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| 1997 | 64.1 | 58 | 80.6 | 55 | 47.6 | 67 | 1.15 | 44 | 0 |
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| 1996 | 62.4 | 87 | 80 | 59 | 44.8 | 111 | 0.79 | 72 | 0 |
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| 1995 | 58.5 | 125 | 74.7 | 115 | 42.3 | 127 | 1.26 | 40 | 0 |
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| 1994 | 66.3 | 21 | 84.1 | 23 | 48.5 | 53 | 0.05 | 124 | 0 |
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| 1993 | 60.3 | 116 | 74.6 | 116 | 46.1 | 96 | 1.49 | 29 | 0 |
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| 1992 | 62.6 | 85 | 80.4 | 56 | 44.9 | 108 | 0.71 | 79 | 0 |
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| 1991 | 66 | 24 | 83.9 | 25 | 48.2 | 58 | 0.72 | 78 | 0 |
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| 1990 | 65.8 | 28 | 81.2 | 50 | 50.4 | 15 | 2.27 | 16 | 0 |
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| 1989 | 61.9 | 98 | 74.8 | 113 | 49 | 44 | 3.49 | 2 | 0 |
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| 1988 | 64.2 | 54 | 83.2 | 31 | 45.2 | 105 | 0.29 | 105 | 0 |
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| 1987 | 60.7 | 114 | 75.6 | 105 | 45.7 | 99 | 1.35 | 35 | 0 |
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| 1986 | 67.8 | 8 | 85.4 | 10 | 50.3 | 17 | 0.68 | 81 | 0 |
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| 1985 | 59.4 | 121 | 74.5 | 118 | 44.3 | 117 | 1.12 | 48 | 0 |
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| 1984 | 65.6 | 33 | 82.4 | 38 | 48.8 | 48 | 0.88 | 66 | 0 |
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| 1983 | 66.3 | 21 | 83.7 | 27 | 48.9 | 46 | 0.73 | 77 | 0 |
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| 1982 | 63.1 | 79 | 79.5 | 66 | 46.8 | 83 | 0.82 | 68 | 0 |
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| 1981 | 67.9 | 6 | 86.2 | 6 | 49.5 | 39 | 1.32 | 37 | 0 |
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| 1980 | 59.4 | 121 | 74.3 | 120 | 44.4 | 114 | 1.60 | 28 | 0 |
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| 1979 | 67.3 | 13 | 84.7 | 16 | 49.9 | 30 | 1.10 | 50 | 0 |
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| 1978 | 61.5 | 105 | 75.7 | 102 | 47.4 | 70 | 2.64 | 9 | 0 |
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| 1977 | 63.5 | 68 | 77 | 90 | 50.1 | 24 | 1.13 | 47 | 0 |
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| 1976 | 62.8 | 83 | 75.5 | 107 | 50.1 | 24 | 3.78 | 1 | 0 |
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| 1975 | 61.5 | 105 | 74.4 | 119 | 48.6 | 52 | 2.79 | 8 | 0 |
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| 1974 | 63.2 | 78 | 78.4 | 80 | 48 | 62 | 0.70 | 80 | 0 |
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| 1973 | 65.7 | 30 | 85.5 | 8 | 45.9 | 98 | 0.56 | 91 | 0 |
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| 1972 | 67.5 | 10 | 84.9 | 14 | 50.2 | 21 | 1.03 | 56 | 0 |
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| 1971 | 68.8 | 3 | 88.7 | 2 | 48.9 | 46 | 1.47 | 31 | 0 |
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| 1970 | 64.2 | 54 | 85 | 12 | 43.5 | 124 | 0.34 | 99 | 0 |
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| 1969 | 62.9 | 82 | 84.6 | 17 | 41.1 | 128 | 0.09 | 121 | 0 |
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| 1968 | 61.8 | 101 | 76.1 | 97 | 47.4 | 70 | 3.10 | 5 | 0 |
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| 1967 | 67.7 | 9 | 89.4 | 1 | 46 | 97 | 0.01 | 126 | 0 |
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| 1966 | 61.5 | 105 | 78.9 | 72 | 44.2 | 118 | 1.05 | 55 | 0 |
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| 1965 | 63.3 | 76 | 76.5 | 93 | 50.1 | 24 | 3.47 | 3 | 0 |
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| 1964 | 58.4 | 126 | 72.9 | 123 | 43.8 | 121 | 1.77 | 25 | 0 |
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| 1963 | 65.2 | 36 | 83 | 33 | 47.4 | 70 | 0.81 | 70 | 0 |
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| 1962 | 62 | 96 | 78.9 | 72 | 45.1 | 106 | 0.95 | 61 | 0 |
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| 1961 | 69.1 | 1 | 88.6 | 3 | 49.6 | 37 | 0.67 | 84 | 0 |
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| 1960 | 61 | 112 | 75.6 | 105 | 46.4 | 89 | 2.31 | 15 | 0 |
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| 1959 | 59.9 | 119 | 74.9 | 112 | 44.8 | 111 | 0.68 | 81 | 0 |
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| 1958 | 68.2 | 4 | 85.5 | 8 | 51 | 8 | 0.22 | 110 | 0 |
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| 1957 | 63 | 81 | 78 | 83 | 48 | 62 | 0.45 | 96 | 0 |
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| 1956 | 62.1 | 93 | 77.8 | 86 | 46.4 | 89 | 1.93 | 23 | 0 |
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| 1955 | 63.4 | 73 | 82.9 | 35 | 43.8 | 121 | trace | 128 | 0 |
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| 1954 | 60.7 | 114 | 75.1 | 110 | 46.4 | 89 | 3.04 | 6 | 0 |
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| 1953 | 63.8 | 65 | 80 | 59 | 47.5 | 69 | 1.98 | 20 | 0 |
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| 1952 | 63.4 | 73 | 79.9 | 63 | 46.9 | 82 | 1.02 | 58 | 0 |
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| 1951 | 61.3 | 109 | 76.4 | 95 | 46.3 | 92 | 2.63 | 10 | 0 |
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| 1950 | 63.7 | 66 | 79 | 71 | 48.4 | 55 | 1.24 | 41 | 0 |
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| 1949 | 65.2 | 36 | 83.1 | 32 | 47.4 | 70 | 0.58 | 90 | 0 |
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| 1948 | 62.3 | 90 | 74.6 | 116 | 50 | 28 | 2.33 | 14 | 0 |
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| 1947 | 62.4 | 87 | 75.9 | 100 | 48.8 | 48 | 3.28 | 4 | 0 |
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| 1946 | 64.1 | 58 | 78.3 | 81 | 50 | 28 | 0.77 | 74 | 0 |
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| 1945 | 66.5 | 18 | 82.3 | 41 | 50.6 | 11 | 0.82 | 68 | 0 |
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| 1944 | 62.2 | 92 | 75.7 | 102 | 48.7 | 50 | 1.34 | 36 | 0 |
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| 1943 | 63.5 | 68 | 78.1 | 82 | 49 | 44 | 0.42 | 97 | 0 |
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| 1942 | 64.7 | 46 | 78.9 | 72 | 50.4 | 15 | 0.90 | 65 | 0 |
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| 1941 | 64.4 | 51 | 77.5 | 87 | 51.2 | 7 | 0.80 | 71 | 0 |
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| 1940 | 66.7 | 17 | 82.8 | 36 | 50.6 | 11 | 0.02 | 125 | 0 |
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| 1939 | 66 | 24 | 82.3 | 41 | 49.6 | 37 | 0.21 | 112 | 0 |
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| 1938 | 64.4 | 51 | 79.3 | 69 | 49.4 | 41 | 0.56 | 91 | 0 |
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| 1937 | 62 | 96 | 75.9 | 100 | 48 | 62 | 0.66 | 87 | 0 |
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| 1936 | 66.5 | 18 | 82.2 | 43 | 50.8 | 10 | 0.47 | 94 | 0 |
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| 1935 | 62.1 | 93 | 77 | 90 | 47.3 | 74 | 0.37 | 98 | 0 |
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| 1934 | 66 | 24 | 81.7 | 47 | 50.2 | 21 | 0.07 | 122 | 0 |
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| 1933 | 64.5 | 50 | 78.9 | 72 | 50.2 | 21 | 1.77 | 25 | 0 |
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| 1932 | 65.2 | 36 | 78.7 | 77 | 51.7 | 4 | 1.85 | 24 | 0 |
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| 1931 | 67.1 | 14 | 83.6 | 28 | 50.5 | 13 | 0.01 | 126 | 0 |
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| 1930 | 68 | 5 | 83.6 | 28 | 52.4 | 2 | 0.23 | 109 | 0 |
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| 1929 | 67.9 | 6 | 84.3 | 20 | 51.5 | 5 | 0.14 | 115 | 0 |
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| 1928 | 60.8 | 113 | 74.8 | 113 | 46.7 | 85 | 1.14 | 46 | 0 |
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| 1927 | 62.8 | 83 | 75.3 | 109 | 50.3 | 17 | 0.92 | 64 | 0 |
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| 1926 | 62.5 | 86 | 75.7 | 102 | 49.2 | 42 | 2.23 | 17 | 0 |
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| 1925 | 61.8 | 101 | 75.4 | 108 | 48.2 | 58 | 1.12 | 48 | 0 |
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| 1924 | 61.2 | 110 | 75.1 | 110 | 47.3 | 74 | 0.74 | 76 | 0 |
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| 1923 | 63.9 | 64 | 77 | 90 | 50.9 | 9 | 0.96 | 59 | 0 |
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| 1922 | 65.8 | 28 | 79.5 | 66 | 52.1 | 3 | 0.76 | 75 | 0 |
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| 1921 | 64 | 62 | 78.8 | 76 | 49.2 | 42 | 0.56 | 91 | 0 |
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| 1920 | 63.5 | 68 | 77.4 | 89 | 49.7 | 34 | 2.61 | 11 | 0 |
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| 1919 | 65 | 40 | 79.9 | 63 | 50.1 | 24 | 1.06 | 53 | 0 |
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| 1918 | 60.1 | 118 | 72.4 | 124 | 47.8 | 66 | 0.96 | 59 | 0 |
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| 1917 | 63.5 | 68 | 80.4 | 56 | 46.6 | 86 | 0.32 | 102 | 0 |
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| 1916 | 61.6 | 104 | 76 | 98 | 47.2 | 77 | 1.96 | 22 | 0 |
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| 1915 | 69.1 | 1 | 84.9 | 14 | 53.3 | 1 | 0.22 | 110 | 0 |
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| 1914 | 63.1 | 79 | 79.6 | 65 | 46.6 | 86 | 1.31 | 38 | 0 |
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| 1913 | 63.3 | 76 | 78.6 | 78 | 48 | 62 | 0.61 | 89 | 0 |
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| 1912 | 59.8 | 120 | 72 | 125 | 47.6 | 67 | 1.03 | 56 | 0 |
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| 1911 | 60.3 | 116 | 74.1 | 121 | 46.6 | 86 | 1.44 | 33 | 0 |
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| 1910 | 59.1 | 123 | 73.8 | 122 | 44.4 | 114 | 0.67 | 84 | 0 |
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| 1909 | 61.7 | 103 | 78.5 | 79 | 44.9 | 108 | 0.11 | 119 | 0 |
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| 1908 | 61.9 | 98 | 76.5 | 93 | 47.3 | 74 | 0.88 | 66 | 0 |
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| 1907 | 59 | 124 | 71.8 | 126 | 46.2 | 94 | 2.54 | 12 | 0 |
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| 1906 | 63.7 | 66 | 77.9 | 85 | 49.5 | 39 | 1.98 | 20 | 0 |
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| 1905 | 64.8 | 45 | 81.2 | 50 | 48.4 | 55 | 0.11 | 119 | 1 |
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| 1904 | 64.1 | 58 | 79.5 | 66 | 48.3 | 57 | 1.15 | 44 | 2 |
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| 1903 | 62.3 | 90 | 76.2 | 96 | 48.5 | 53 | 0.78 | 73 | 0 |
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| 1902 | 61.5 | 105 | 76 | 98 | 47 | 80 | 0.95 | 61 | 0 |
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| 1901 | 65.7 | 30 | 81.1 | 53 | 50.3 | 17 | 0.14 | 115 | 0 |
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| 1900 | 58.4 | 126 | 71.4 | 127 | 45.3 | 104 | 1.48 | 30 | 0 |
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| 1899 | 56.1 | 128 | 67.2 | 128 | 45 | 107 | 2.08 | 18 | 0 |
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