Every August in Havre, MT from 1880 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 | 68.3 | 59 | 84.5 | 53 | 52.1 | 72 | 0.60 | 95 | 0 |
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| 2025 | 68.3 | 59 | 82.1 | 85 | 54.6 | 32 | 3.21 | 4 | 0 |
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| 2024 | 70 | 32 | 85 | 48 | 55 | 20 | 1.12 | 60 | 0 |
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| 2023 | 70.5 | 21 | 86.5 | 27 | 54.6 | 32 | 0.90 | 73 | 0 |
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| 2022 | 73.9 | 3 | 91.4 | 3 | 56.4 | 8 | 0.35 | 113 | 0 |
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| 2021 | 68 | 65 | 82.7 | 73 | 53.3 | 50 | 1.04 | 65 | 0 |
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| 2020 | 70.3 | 25 | 88.5 | 13 | 52.1 | 72 | 0.03 | 144 | 0 |
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| 2019 | 68.1 | 63 | 83 | 70 | 53.2 | 51 | 0.50 | 104 | 0 |
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| 2018 | 67.5 | 73 | 84.9 | 49 | 50.1 | 126 | 0.62 | 92 | 0 |
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| 2017 | 67.8 | 68 | 85.3 | 43 | 50.4 | 113 | 0.15 | 137 | 0 |
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| 2016 | 67.3 | 78 | 82.5 | 75 | 52.1 | 72 | 1.24 | 54 | 0 |
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| 2015 | 67.9 | 66 | 84.3 | 56 | 51.5 | 89 | 0.74 | 84 | 0 |
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| 2014 | 69 | 49 | 83.4 | 68 | 54.6 | 32 | 2.66 | 11 | 0 |
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| 2013 | 70.2 | 29 | 85.4 | 39 | 55 | 20 | 1.14 | 58 | 0 |
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| 2012 | 69.3 | 46 | 88.3 | 14 | 50.3 | 119 | 0.31 | 119 | 0 |
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| 2011 | 69.5 | 43 | 86.8 | 24 | 52.1 | 72 | 0.26 | 124 | 0 |
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| 2010 | 66.1 | 96 | 82.3 | 78 | 49.9 | 129 | 1.34 | 48 | 0 |
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| 2009 | 66.1 | 96 | 82 | 86 | 50.2 | 124 | 1.08 | 64 | 0 |
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| 2008 | 67.2 | 81 | 85.2 | 44 | 49.3 | 136 | 1.13 | 59 | 0 |
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| 2007 | 68.5 | 57 | 85.2 | 44 | 51.9 | 80 | 0.25 | 127 | 0 |
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| 2006 | 68.3 | 59 | 85.5 | 37 | 51.1 | 97 | 0.80 | 79 | 0 |
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| 2005 | 65.5 | 112 | 82.8 | 72 | 48.2 | 145 | 1.10 | 62 | 0 |
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| 2004 | 65.2 | 116 | 80 | 107 | 50.4 | 113 | 1.50 | 40 | 0 |
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| 2003 | 73.3 | 4 | 90.4 | 5 | 56.2 | 10 | 0.77 | 81 | 0 |
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| 2002 | 63.5 | 133 | 76.6 | 137 | 50.4 | 113 | 2.40 | 20 | 0 |
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| 2001 | 74.6 | 2 | 94.4 | 1 | 54.8 | 24 | 0.18 | 133 | 0 |
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| 2000 | 69.2 | 48 | 86.6 | 26 | 51.9 | 80 | 0.13 | 138 | 0 |
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| 1999 | 69.8 | 39 | 85.6 | 34 | 54 | 41 | 1.01 | 67 | 0 |
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| 1998 | 72.1 | 12 | 90.2 | 8 | 54.1 | 39 | 0.42 | 109 | 0 |
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| 1997 | 68.6 | 56 | 85.4 | 39 | 51.8 | 83 | 0.53 | 101 | 0 |
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| 1996 | 69.9 | 36 | 88.3 | 14 | 51.6 | 85 | 0.11 | 139 | 0 |
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| 1995 | 65.6 | 108 | 81.4 | 92 | 49.7 | 132 | 1.34 | 48 | 0 |
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| 1994 | 69.4 | 45 | 85.8 | 33 | 53.1 | 57 | 0.52 | 102 | 0 |
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| 1993 | 62.9 | 139 | 76.5 | 138 | 49.2 | 137 | 2.02 | 25 | 0 |
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| 1992 | 63.4 | 136 | 78.2 | 127 | 48.6 | 141 | 1.66 | 35 | 0 |
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| 1991 | 72.5 | 7 | 88 | 16 | 56.9 | 6 | 1.34 | 48 | 0 |
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| 1990 | 70.5 | 21 | 84.8 | 51 | 56.3 | 9 | 0.77 | 81 | 0 |
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| 1989 | 66 | 100 | 78.7 | 122 | 53.2 | 51 | 4.47 | 1 | 0 |
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| 1988 | 66.9 | 86 | 83.5 | 64 | 50.3 | 119 | 0.00 | 147 | 0 |
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| 1987 | 61.9 | 146 | 75.8 | 144 | 48 | 146 | 0.95 | 70 | 0 |
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| 1986 | 67.2 | 81 | 82.5 | 75 | 51.9 | 80 | 1.33 | 51 | 0 |
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| 1985 | 63.8 | 131 | 77.2 | 134 | 50.4 | 113 | 2.37 | 21 | 0 |
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| 1984 | 70.8 | 16 | 87.5 | 19 | 54.1 | 39 | 0.52 | 102 | 0 |
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| 1983 | 73 | 5 | 90.4 | 5 | 55.6 | 12 | 0.21 | 131 | 0 |
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| 1982 | 67.3 | 78 | 81.5 | 91 | 53.2 | 51 | 1.77 | 30 | 0 |
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| 1981 | 70.6 | 19 | 87.3 | 22 | 54 | 41 | 0.99 | 68 | 0 |
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| 1980 | 62.3 | 145 | 75.9 | 142 | 48.6 | 141 | 0.55 | 100 | 0 |
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| 1979 | 70.3 | 25 | 85.9 | 32 | 54.7 | 28 | 0.22 | 129 | 0 |
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| 1978 | 66.7 | 89 | 82.9 | 71 | 50.4 | 113 | 0.58 | 97 | 0 |
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| 1977 | 63.6 | 132 | 78.5 | 124 | 48.6 | 141 | 0.82 | 76 | 0 |
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| 1976 | 70.6 | 19 | 86.5 | 27 | 54.7 | 28 | 1.11 | 61 | 0 |
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| 1975 | 65.2 | 116 | 78.2 | 127 | 52.2 | 68 | 3.11 | 7 | 0 |
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| 1974 | 63.5 | 133 | 76.1 | 140 | 51 | 100 | 3.57 | 3 | 0 |
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| 1973 | 70.5 | 21 | 87.9 | 17 | 53.2 | 51 | 0.65 | 90 | 0 |
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| 1972 | 72.5 | 7 | 87.5 | 19 | 57.4 | 1 | 1.74 | 32 | 0 |
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| 1971 | 75.5 | 1 | 93.9 | 2 | 57 | 4 | 0.70 | 87 | 0 |
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| 1970 | 69.9 | 36 | 89.1 | 9 | 50.6 | 108 | 0.39 | 110 | 0 |
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| 1969 | 70.7 | 17 | 91 | 4 | 50.4 | 113 | 0.01 | 145 | 0 |
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| 1968 | 64.3 | 129 | 79.2 | 117 | 49.5 | 133 | 3.03 | 8 | 0 |
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| 1967 | 71.1 | 15 | 89.1 | 9 | 53.1 | 57 | trace | 146 | 0 |
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| 1966 | 65.7 | 103 | 80.7 | 100 | 50.7 | 105 | 0.50 | 104 | 0 |
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| 1965 | 67.4 | 76 | 81 | 96 | 53.8 | 45 | 2.77 | 10 | 0 |
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| 1964 | 65.1 | 119 | 79.5 | 111 | 50.7 | 105 | 1.84 | 28 | 0 |
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| 1963 | 69.9 | 36 | 86.2 | 30 | 53.6 | 46 | 0.70 | 87 | 0 |
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| 1962 | 67.7 | 70 | 83.4 | 68 | 52 | 78 | 0.93 | 72 | 0 |
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| 1961 | 72.9 | 6 | 90.4 | 5 | 55.4 | 15 | 0.19 | 132 | 0 |
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| 1960 | 66.9 | 86 | 80.8 | 97 | 52.9 | 59 | 1.98 | 26 | 0 |
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| 1959 | 66.1 | 96 | 80.8 | 97 | 51.4 | 92 | 0.58 | 97 | 0 |
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| 1958 | 72.4 | 10 | 87.6 | 18 | 57.2 | 3 | 0.43 | 107 | 0 |
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| 1957 | 67.9 | 66 | 80.6 | 102 | 55.2 | 17 | 1.29 | 52 | 0 |
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| 1956 | 66.5 | 92 | 80.6 | 102 | 52.4 | 65 | 1.63 | 36 | 0 |
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| 1955 | 69.5 | 43 | 86.2 | 30 | 52.9 | 59 | 0.10 | 140 | 0 |
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| 1954 | 67.2 | 81 | 79.3 | 116 | 55.1 | 19 | 3.03 | 8 | 0 |
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| 1953 | 70 | 32 | 85.5 | 37 | 54.5 | 35 | 0.26 | 124 | 0 |
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| 1952 | 67 | 85 | 82.2 | 81 | 51.8 | 83 | 0.62 | 92 | 0 |
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| 1951 | 65 | 120 | 77.5 | 132 | 52.5 | 63 | 3.17 | 5 | 0 |
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| 1950 | 65.7 | 103 | 79.8 | 108 | 51.6 | 85 | 1.15 | 57 | 0 |
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| 1949 | 72.5 | 7 | 88.8 | 11 | 56.2 | 10 | 0.23 | 128 | 0 |
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| 1948 | 70.2 | 29 | 85.6 | 34 | 54.8 | 24 | 0.28 | 122 | 0 |
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| 1947 | 68.1 | 63 | 82.2 | 81 | 54 | 41 | 1.41 | 45 | 0 |
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| 1946 | 66.5 | 92 | 82 | 86 | 51.1 | 97 | 0.35 | 113 | 0 |
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| 1945 | 70 | 32 | 84.7 | 52 | 55.2 | 17 | 1.21 | 55 | 0 |
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| 1944 | 65.6 | 108 | 79 | 120 | 52.2 | 68 | 1.60 | 39 | 0 |
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| 1943 | 68.7 | 53 | 84.1 | 61 | 53.4 | 49 | 0.16 | 136 | 0 |
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| 1942 | 67.7 | 70 | 81.6 | 90 | 53.2 | 51 | 0.78 | 80 | 1 |
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| 1941 | 68.9 | 51 | 82.3 | 78 | 55.5 | 14 | 0.84 | 75 | 0 |
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| 1940 | 70.3 | 25 | 87.1 | 23 | 53.5 | 47 | 0.31 | 119 | 0 |
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| 1939 | 68.9 | 51 | 85.6 | 34 | 52.1 | 72 | 0.58 | 97 | 0 |
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| 1938 | 67.3 | 78 | 82.3 | 78 | 52.3 | 66 | 1.40 | 46 | 0 |
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| 1937 | 67.5 | 73 | 83.8 | 63 | 51.2 | 96 | 0.82 | 76 | 0 |
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| 1936 | 70.4 | 24 | 84.3 | 56 | 56.5 | 7 | 1.50 | 40 | 0 |
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| 1935 | 65.7 | 103 | 81.1 | 94 | 50.3 | 119 | 0.33 | 118 | 0 |
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| 1934 | 67.8 | 68 | 83.5 | 64 | 52.1 | 72 | 0.98 | 69 | 0 |
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| 1933 | 68.7 | 53 | 82.6 | 74 | 54.8 | 24 | 3.90 | 2 | 0 |
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| 1932 | 68.5 | 57 | 82.2 | 81 | 54.9 | 23 | 1.75 | 31 | 0 |
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| 1931 | 68.7 | 53 | 83.5 | 64 | 53.9 | 44 | 0.22 | 129 | 0 |
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| 1930 | 72.2 | 11 | 87.5 | 19 | 57 | 4 | 0.34 | 116 | 0 |
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| 1929 | 71.6 | 13 | 88.7 | 12 | 54.5 | 35 | 0.26 | 124 | 0 |
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| 1928 | 63.5 | 133 | 77 | 135 | 50.1 | 126 | 1.88 | 27 | 0 |
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| 1927 | 65.6 | 108 | 79 | 120 | 52.3 | 66 | 0.39 | 110 | 0 |
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| 1926 | 65.8 | 101 | 79.4 | 115 | 52.2 | 68 | 2.41 | 19 | 1 |
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| 1925 | 65.7 | 103 | 81.2 | 93 | 50.2 | 124 | 1.78 | 29 | 0 |
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| 1924 | 64.7 | 123 | 79.5 | 111 | 50 | 128 | 1.39 | 47 | 0 |
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| 1923 | 64.9 | 121 | 79.5 | 111 | 50.6 | 108 | 1.47 | 42 | 3 |
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| 1922 | 69.8 | 39 | 84.3 | 56 | 55.3 | 16 | 1.70 | 33 | 0 |
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| 1921 | 69 | 49 | 84.9 | 49 | 53.2 | 51 | 0.27 | 123 | 0 |
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| 1920 | 69.6 | 42 | 84.5 | 53 | 54.7 | 28 | 0.81 | 78 | 0 |
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| 1919 | 70.3 | 25 | 85.1 | 46 | 55.6 | 12 | 0.76 | 83 | 0 |
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| 1918 | 66.6 | 91 | 79.8 | 108 | 53.5 | 47 | 2.61 | 12 | 0 |
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| 1917 | 65.5 | 112 | 81.1 | 94 | 49.9 | 129 | 0.43 | 107 | 0 |
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| 1916 | 64.9 | 121 | 79.1 | 119 | 50.7 | 105 | 0.34 | 116 | 0 |
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| 1915 | 70 | 32 | 85.1 | 46 | 55 | 20 | 0.94 | 71 | 0 |
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| 1914 | 64.4 | 126 | 78.5 | 124 | 50.3 | 119 | 2.43 | 18 | 0 |
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| 1913 | 66.9 | 86 | 82.2 | 81 | 51.6 | 85 | 0.74 | 84 | 0 |
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| 1912 | 62.7 | 142 | 74.5 | 146 | 50.8 | 103 | 2.24 | 22 | 0 |
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| 1911 | 62.7 | 142 | 75.9 | 142 | 49.5 | 133 | 2.24 | 22 | 0 |
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| 1910 | 63.2 | 138 | 77.6 | 131 | 48.8 | 139 | 0.37 | 112 | 0 |
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| 1909 | 67.7 | 70 | 84.2 | 60 | 51.3 | 95 | 0.18 | 133 | 0 |
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| 1908 | 65.3 | 115 | 79.2 | 117 | 51.4 | 92 | 0.85 | 74 | 0 |
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| 1907 | 62.9 | 139 | 77 | 135 | 48.8 | 139 | 1.02 | 66 | 0 |
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| 1906 | 66.7 | 89 | 80.6 | 102 | 52.8 | 61 | 1.63 | 36 | 0 |
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| 1905 | 70.7 | 17 | 86.7 | 25 | 54.7 | 28 | 0.30 | 121 | 0 |
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| 1904 | 66.2 | 95 | 81.9 | 88 | 50.5 | 111 | 0.61 | 94 | 0 |
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| 1903 | 64.5 | 125 | 76.4 | 139 | 52.5 | 63 | 2.52 | 17 | 0 |
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| 1902 | 66.1 | 96 | 80.6 | 102 | 51.5 | 89 | 0.66 | 89 | 0 |
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| 1901 | 69.3 | 46 | 84.1 | 61 | 54.4 | 38 | 0.60 | 95 | 0 |
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| 1900 | 65.7 | 103 | 79.5 | 111 | 52 | 78 | 1.62 | 38 | 0 |
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| 1899 | 61.9 | 146 | 74.4 | 147 | 49.5 | 133 | 3.14 | 6 | 0 |
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| 1898 | 70.1 | 31 | 85.4 | 39 | 54.8 | 24 | 0.10 | 140 | 0 |
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| 1897 | 68.3 | 59 | 84.4 | 55 | 52.2 | 68 | 0.17 | 135 | 0 |
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| 1896 | 65.6 | 108 | 80.3 | 106 | 50.9 | 102 | 0.65 | 90 | 0 |
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| 1895 | 64.2 | 130 | 80.8 | 97 | 47.5 | 147 | 0.04 | 143 | 0 |
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| 1894 | 69.7 | 41 | 86.5 | 27 | 52.8 | 61 | 0.48 | 106 | 0 |
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| 1893 | 67.4 | 76 | 84.3 | 56 | 50.5 | 111 | 1.16 | 56 | 0 |
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| 1892 | 65.4 | 114 | 81.8 | 89 | 49.1 | 138 | 1.09 | 63 | 0 |
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| 1891 | 64.4 | 126 | 77.4 | 133 | 51.4 | 92 | 1.67 | 34 | 0 |
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| 1890 | 64.6 | 124 | 78 | 129 | 51.1 | 97 | 1.26 | 53 | 0 |
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| 1889 | 66.4 | 94 | 82.5 | 75 | 50.3 | 119 | 0.10 | 140 | 0 |
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| 1888 | 65.2 | 116 | 78.7 | 122 | 51.6 | 85 | 2.16 | 24 | 0 |
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| 1887 | 62.9 | 139 | 76 | 141 | 49.8 | 131 | 2.56 | 15 | 0 |
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| 1886 | 67.5 | 73 | 83.5 | 64 | 51.5 | 89 | 0.35 | 113 | 0 |
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| 1885 | 64.4 | 126 | 78 | 129 | 50.8 | 103 | 1.45 | 43 | 0 |
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| 1884 | 65.8 | 101 | 80.7 | 100 | 51 | 100 | 2.61 | 12 | 0 |
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| 1883 | 67.1 | 84 | 79.6 | 110 | 54.5 | 35 | 2.59 | 14 | 0 |
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| 1882 | 71.3 | 14 | 85.4 | 39 | 57.3 | 2 | 0.73 | 86 | 0 |
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| 1881 | 63.4 | 136 | 78.3 | 126 | 48.6 | 141 | 1.45 | 43 | 0 |
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| 1880 | 62.6 | 144 | 74.6 | 145 | 50.6 | 108 | 2.56 | 15 | 0 |
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