Every July in Williston, ND from 1894 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 | 74 | 13 | 87 | 21 | 61 | 7 | 0.95 | 109 | 0 |
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| 2025 | 68.2 | 98 | 79.6 | 108 | 56.8 | 72 | 4.08 | 12 | 0 |
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| 2024 | 73.7 | 16 | 87.1 | 19 | 60.3 | 13 | 0.99 | 106 | 0 |
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| 2023 | 69.3 | 85 | 82.1 | 89 | 56.5 | 79 | 4.02 | 13 | 0 |
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| 2022 | 71.9 | 38 | 84.5 | 53 | 59.2 | 25 | 1.99 | 55 | 0 |
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| 2021 | 76.6 | 3 | 90.1 | 7 | 63.2 | 2 | 1.70 | 76 | 0 |
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| 2020 | 70.9 | 63 | 83.9 | 63 | 57.8 | 53 | 2.46 | 35 | 0 |
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| 2019 | 69.9 | 76 | 83.2 | 75 | 56.5 | 79 | 3.23 | 23 | 0 |
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| 2018 | 70.4 | 69 | 83.9 | 63 | 56.8 | 72 | 3.00 | 28 | 0 |
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| 2017 | 76.9 | 2 | 92.2 | 2 | 61.6 | 5 | 0.79 | 117 | 0 |
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| 2016 | 71.4 | 49 | 84.4 | 55 | 58.4 | 42 | 2.39 | 39 | 0 |
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| 2015 | 72.4 | 31 | 86.6 | 27 | 58.2 | 46 | 1.55 | 80 | 0 |
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| 2014 | 69.4 | 82 | 84.7 | 50 | 54.2 | 107 | 0.66 | 118 | 0 |
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| 2013 | 68 | 99 | 80.7 | 99 | 55.4 | 93 | 1.75 | 70 | 0 |
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| 2012 | 75 | 7 | 89.1 | 10 | 60.9 | 10 | 1.89 | 62 | 0 |
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| 2011 | 71.6 | 45 | 85 | 44 | 58.1 | 50 | 2.34 | 43 | 0 |
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| 2010 | 69.5 | 79 | 83.2 | 75 | 55.8 | 88 | 3.91 | 14 | 0 |
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| 2009 | 65.9 | 120 | 79 | 111 | 52.7 | 119 | 3.31 | 21 | 0 |
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| 2008 | 71.4 | 49 | 86.8 | 25 | 55.9 | 87 | 1.05 | 100 | 0 |
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| 2007 | 75.9 | 4 | 90.7 | 4 | 61 | 7 | 1.95 | 56 | 0 |
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| 2006 | 74.8 | 9 | 92.1 | 3 | 57.5 | 56 | 0.22 | 128 | 0 |
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| 2005 | 71.1 | 55 | 85.4 | 41 | 56.8 | 72 | 1.65 | 77 | 0 |
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| 2004 | 68.3 | 97 | 82.6 | 86 | 54 | 109 | 2.37 | 40 | 0 |
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| 2003 | 72.3 | 33 | 87.1 | 19 | 57.5 | 56 | 1.94 | 57 | 0 |
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| 2002 | 73.5 | 18 | 88.2 | 14 | 58.7 | 35 | 2.65 | 30 | 0 |
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| 2001 | 71 | 59 | 83.4 | 73 | 58.7 | 35 | 4.30 | 10 | 0 |
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| 2000 | 72 | 36 | 86.1 | 32 | 58 | 51 | 3.66 | 16 | 0 |
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| 1999 | 68 | 99 | 83 | 80 | 53.1 | 118 | 3.90 | 15 | 0 |
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| 1998 | 71.7 | 42 | 85.9 | 35 | 57.5 | 56 | 1.74 | 73 | 0 |
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| 1997 | 68.7 | 89 | 81.2 | 95 | 56.2 | 83 | 6.62 | 1 | 0 |
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| 1996 | 68.4 | 95 | 81.9 | 90 | 54.9 | 98 | 3.37 | 20 | 0 |
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| 1995 | 68.5 | 94 | 82.7 | 85 | 54.3 | 105 | 3.49 | 17 | 0 |
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| 1994 | 67.7 | 103 | 82.8 | 83 | 52.6 | 122 | 0.31 | 127 | 0 |
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| 1993 | 62.2 | 129 | 73.5 | 129 | 51 | 130 | 6.28 | 2 | 0 |
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| 1992 | 64 | 127 | 76.8 | 126 | 51.2 | 128 | 1.04 | 102 | 0 |
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| 1991 | 70.5 | 66 | 84.2 | 60 | 56.8 | 72 | 1.04 | 102 | 0 |
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| 1990 | 69.9 | 76 | 84.3 | 58 | 55.4 | 93 | 1.32 | 88 | 0 |
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| 1989 | 75.7 | 5 | 90.6 | 5 | 60.8 | 11 | 0.87 | 113 | 0 |
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| 1988 | 72.9 | 25 | 88.6 | 12 | 57.2 | 64 | 0.52 | 124 | 0 |
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| 1987 | 70 | 74 | 81.5 | 93 | 58.4 | 42 | 4.97 | 6 | 0 |
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| 1986 | 67.3 | 106 | 79.6 | 108 | 54.9 | 98 | 5.70 | 5 | 0 |
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| 1985 | 71.1 | 55 | 85.3 | 43 | 57 | 67 | 1.40 | 83 | 0 |
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| 1984 | 72.9 | 25 | 87.7 | 17 | 58.2 | 46 | 0.93 | 111 | 0 |
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| 1983 | 74.9 | 8 | 89.9 | 8 | 59.9 | 16 | 2.12 | 54 | 0 |
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| 1982 | 71.7 | 42 | 84.8 | 48 | 58.5 | 40 | 1.17 | 94 | 0 |
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| 1981 | 73.8 | 15 | 88.6 | 12 | 59 | 29 | 2.47 | 34 | 0 |
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| 1980 | 73.2 | 20 | 90.3 | 6 | 56 | 85 | 0.54 | 123 | 0 |
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| 1979 | 70.3 | 71 | 83.3 | 74 | 57.3 | 62 | 1.78 | 69 | 0 |
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| 1978 | 68.6 | 90 | 81.7 | 91 | 55.4 | 93 | 2.62 | 31 | 0 |
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| 1977 | 71.1 | 55 | 84.9 | 47 | 57.3 | 62 | 1.28 | 90 | 0 |
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| 1976 | 70.5 | 66 | 84.6 | 52 | 56.3 | 82 | 0.49 | 125 | 0 |
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| 1975 | 73 | 22 | 86.5 | 30 | 59.4 | 22 | 2.35 | 41 | 0 |
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| 1974 | 74.2 | 11 | 89.4 | 9 | 59.1 | 27 | 1.29 | 89 | 0 |
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| 1973 | 68.4 | 95 | 82.8 | 83 | 53.9 | 111 | 1.01 | 105 | 0 |
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| 1972 | 64 | 127 | 76.8 | 126 | 51.2 | 128 | 2.14 | 53 | 0 |
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| 1971 | 66.3 | 117 | 80.6 | 101 | 52 | 124 | 1.92 | 59 | 0 |
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| 1970 | 72.5 | 30 | 86.2 | 31 | 58.8 | 33 | 3.11 | 26 | 0 |
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| 1969 | 67.8 | 101 | 80.2 | 104 | 55.5 | 91 | 3.47 | 18 | 0 |
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| 1968 | 69.4 | 82 | 84.8 | 48 | 53.9 | 111 | 0.63 | 119 | 0 |
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| 1967 | 70.3 | 71 | 86.1 | 32 | 54.5 | 102 | 1.05 | 100 | 0 |
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| 1966 | 73 | 22 | 86.8 | 25 | 59.2 | 25 | 1.92 | 59 | 0 |
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| 1965 | 70.4 | 69 | 83.2 | 75 | 57.6 | 55 | 1.52 | 81 | 0 |
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| 1964 | 72.7 | 27 | 86.9 | 24 | 58.5 | 40 | 2.24 | 47 | 0 |
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| 1963 | 72.4 | 31 | 85.9 | 35 | 59 | 29 | 6.20 | 3 | 0 |
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| 1962 | 65.5 | 122 | 78.2 | 119 | 52.7 | 119 | 4.10 | 11 | 0 |
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| 1961 | 71.3 | 53 | 83.5 | 69 | 59 | 29 | 1.80 | 68 | 0 |
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| 1960 | 74 | 13 | 87.7 | 17 | 60.4 | 12 | 0.89 | 112 | 0 |
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| 1959 | 72.3 | 33 | 85.9 | 35 | 58.7 | 35 | 0.17 | 129 | 0 |
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| 1958 | 66.1 | 119 | 77.7 | 124 | 54.4 | 104 | 0.81 | 116 | 0 |
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| 1957 | 75.5 | 6 | 88.9 | 11 | 62 | 4 | 1.83 | 64 | 0 |
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| 1956 | 67.2 | 109 | 78.2 | 119 | 56.2 | 83 | 2.20 | 49 | 0 |
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| 1955 | 71.5 | 48 | 83.1 | 79 | 59.9 | 16 | 1.42 | 82 | 0 |
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| 1954 | 71.6 | 45 | 84.4 | 55 | 58.8 | 33 | 1.86 | 63 | 0 |
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| 1953 | 69.2 | 86 | 80.7 | 99 | 57.7 | 54 | 0.96 | 107 | 0 |
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| 1952 | 67.3 | 106 | 79.8 | 107 | 54.9 | 98 | 2.16 | 52 | 0 |
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| 1951 | 70.5 | 66 | 83.9 | 63 | 57.2 | 64 | 1.02 | 104 | 0 |
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| 1950 | 66.8 | 113 | 79 | 111 | 54.6 | 101 | 3.20 | 24 | 0 |
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| 1949 | 69.6 | 78 | 82.2 | 88 | 57 | 67 | 1.71 | 75 | 0 |
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| 1948 | 69.4 | 82 | 81.2 | 95 | 57.5 | 56 | 4.37 | 8 | 0 |
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| 1947 | 72.7 | 27 | 85.7 | 38 | 59.7 | 18 | 0.95 | 109 | 0 |
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| 1946 | 71.8 | 39 | 84.1 | 61 | 59.5 | 20 | 4.32 | 9 | 0 |
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| 1945 | 70 | 74 | 83 | 80 | 56.9 | 71 | 1.11 | 97 | 0 |
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| 1944 | 68.6 | 90 | 81.5 | 93 | 55.8 | 88 | 1.73 | 74 | 0 |
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| 1943 | 71 | 59 | 84 | 62 | 58 | 51 | 1.81 | 67 | 0 |
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| 1942 | 68.6 | 90 | 80.5 | 103 | 56.8 | 72 | 1.14 | 95 | 0 |
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| 1941 | 71.1 | 55 | 83.5 | 69 | 58.7 | 35 | 1.56 | 79 | 0 |
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| 1940 | 72.6 | 29 | 85 | 44 | 60.3 | 13 | 2.20 | 49 | 0 |
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| 1939 | 74.6 | 10 | 88.2 | 14 | 61 | 7 | 1.09 | 98 | 0 |
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| 1938 | 70.8 | 64 | 82.6 | 86 | 59 | 29 | 3.01 | 27 | 0 |
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| 1937 | 74.1 | 12 | 85.7 | 38 | 62.5 | 3 | 1.75 | 70 | 0 |
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| 1936 | 80.7 | 1 | 95 | 1 | 66.5 | 1 | 0.87 | 113 | 0 |
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| 1935 | 73.6 | 17 | 86 | 34 | 61.2 | 6 | 4.88 | 7 | 0 |
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| 1934 | 72.2 | 35 | 85.4 | 41 | 59.1 | 27 | 0.83 | 115 | 0 |
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| 1933 | 73.2 | 20 | 87 | 21 | 59.4 | 22 | 2.57 | 32 | 0 |
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| 1932 | 71.4 | 49 | 84.7 | 50 | 58.2 | 46 | 1.75 | 70 | 0 |
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| 1931 | 71 | 59 | 83.7 | 67 | 58.4 | 42 | 1.83 | 64 | 0 |
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| 1930 | 73.3 | 19 | 87.8 | 16 | 58.6 | 39 | 0.56 | 122 | 1 |
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| 1929 | 71.3 | 53 | 85.5 | 40 | 57 | 67 | 0.61 | 120 | 0 |
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| 1928 | 67.3 | 106 | 78.1 | 122 | 56.5 | 79 | 6.07 | 4 | 0 |
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| 1927 | 66.4 | 115 | 78.2 | 119 | 54.5 | 102 | 1.34 | 86 | 0 |
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| 1926 | 71.6 | 45 | 85 | 44 | 58.2 | 46 | 2.40 | 38 | 0 |
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| 1925 | 67.2 | 109 | 80.6 | 101 | 53.8 | 114 | 1.18 | 93 | 0 |
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| 1924 | 66.8 | 113 | 78 | 123 | 55.5 | 91 | 2.18 | 51 | 0 |
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| 1923 | 71.8 | 39 | 83.8 | 66 | 59.7 | 18 | 1.38 | 84 | 0 |
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| 1922 | 66.4 | 115 | 78.5 | 115 | 54.3 | 105 | 3.18 | 25 | 0 |
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| 1921 | 69.5 | 79 | 81.6 | 92 | 57.5 | 56 | 2.35 | 41 | 0 |
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| 1920 | 70.8 | 64 | 83.2 | 75 | 58.4 | 42 | 0.96 | 107 | 0 |
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| 1919 | 71 | 59 | 84.5 | 53 | 57.5 | 56 | 1.33 | 87 | 0 |
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| 1918 | 66.2 | 118 | 78.5 | 115 | 54 | 109 | 2.27 | 46 | 0 |
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| 1917 | 72 | 36 | 87 | 21 | 57 | 67 | 0.36 | 126 | 0 |
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| 1916 | 71.8 | 39 | 83.5 | 69 | 60.1 | 15 | 1.14 | 95 | 0 |
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| 1915 | 62 | 130 | 72.6 | 130 | 51.5 | 126 | 2.21 | 48 | 0 |
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| 1914 | 73 | 22 | 86.6 | 27 | 59.5 | 20 | 2.32 | 45 | 0 |
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| 1913 | 65.9 | 120 | 79 | 111 | 52.7 | 119 | 2.43 | 36 | 0 |
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| 1912 | 64.8 | 124 | 76.3 | 128 | 53.4 | 117 | 3.29 | 22 | 0 |
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| 1911 | 64.8 | 124 | 78.3 | 117 | 51.4 | 127 | 1.21 | 92 | 0 |
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| 1910 | 69.5 | 79 | 83.6 | 68 | 55.4 | 93 | 1.09 | 98 | 0 |
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| 1909 | 67.8 | 101 | 78.8 | 114 | 56.7 | 78 | 1.57 | 78 | 0 |
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| 1908 | 69.1 | 87 | 84.3 | 58 | 53.9 | 111 | 0.60 | 121 | 0 |
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| 1907 | 65.2 | 123 | 78.3 | 117 | 52.1 | 123 | 1.82 | 66 | 0 |
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| 1904 | | | | | | | | | 22 |
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| 1903 | 64.5 | 126 | 77.1 | 125 | 51.8 | 125 | 2.43 | 36 | 0 |
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| 1902 | 67.4 | 105 | 81 | 97 | 53.7 | 115 | 3.43 | 19 | 0 |
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| 1901 | 71.4 | 49 | 83.5 | 69 | 59.4 | 22 | 2.71 | 29 | 0 |
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| 1900 | 70.2 | 73 | 84.4 | 55 | 56 | 85 | 2.34 | 43 | 0 |
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| 1899 | 67.2 | 109 | 80.9 | 98 | 53.6 | 116 | 1.91 | 61 | 0 |
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| 1898 | 67.2 | 109 | 80.1 | 105 | 54.2 | 107 | 1.93 | 58 | 0 |
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| 1897 | 69.1 | 87 | 83 | 80 | 55.3 | 97 | 1.36 | 85 | 0 |
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| 1896 | 67.7 | 103 | 79.6 | 108 | 55.7 | 90 | 1.22 | 91 | 0 |
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| 1895 | 68.6 | 90 | 80 | 106 | 57.2 | 64 | 2.55 | 33 | 0 |
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| 1894 | 71.7 | 42 | 86.6 | 27 | 56.8 | 72 | 0.02 | 130 | 0 |
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