Every 1 September to 9 October in Lander, WY from 1891 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 | 63.1 | 3 | 77.8 | 5 | 48.3 | 2 | 2.18 | 31 | 0 |
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| 2025 | 60.5 | 12 | 74.6 | 25 | 46.4 | 9 | 2.08 | 33 | 0 |
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| 2024 | 63.6 | 1 | 79.9 | 1 | 47.3 | 4 | 0.40 | 114 | 0 |
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| 2023 | 60.5 | 12 | 75 | 19 | 46.1 | 11 | 0.72 | 92 | 0 |
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| 2022 | 61.5 | 6 | 75.8 | 13 | 47.3 | 4 | 1.77 | 45 | 3 |
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| 2021 | 61.1 | 9 | 76.9 | 7 | 45.3 | 16 | 0.68 | 96 | 0 |
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| 2020 | 59.9 | 21 | 76.1 | 12 | 43.8 | 36 | 0.66 | 98 | 0 |
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| 2019 | 56.6 | 61 | 71.3 | 71 | 41.9 | 62 | 1.58 | 55 | 0 |
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| 2018 | 58.4 | 39 | 73.5 | 40 | 43.3 | 43 | 0.62 | 101 | 0 |
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| 2017 | | | | | | | 1.07 | 75 | 23 |
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| 2016 | 57 | 57 | 70.7 | 76 | 43.3 | 43 | 1.99 | 37 | 0 |
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| 2015 | 63 | 4 | 77.9 | 4 | 48.2 | 3 | 1.04 | 78 | 0 |
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| 2014 | 59.2 | 29 | 74 | 34 | 44.4 | 29 | 1.99 | 37 | 0 |
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| 2013 | 56 | 72 | 67.5 | 110 | 44.5 | 26 | 5.44 | 4 | 0 |
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| 2012 | 59 | 30 | 74.1 | 30 | 43.9 | 35 | 0.54 | 107 | 0 |
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| 2011 | 60.5 | 12 | 75 | 19 | 46 | 12 | 2.05 | 34 | 0 |
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| 2010 | 61.4 | 7 | 77.8 | 5 | 44.9 | 22 | 0.15 | 124 | 0 |
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| 2009 | 55.9 | 74 | 70.4 | 80 | 41.4 | 67 | 2.77 | 17 | 0 |
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| 2008 | 56.5 | 63 | 70.5 | 78 | 42.4 | 57 | 0.86 | 87 | 0 |
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| 2007 | 57.1 | 56 | 71.9 | 62 | 42.4 | 57 | 1.28 | 66 | 0 |
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| 2006 | 55.6 | 82 | 68.8 | 98 | 42.5 | 55 | 2.01 | 35 | 0 |
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| 2005 | 57.3 | 55 | 71.8 | 65 | 42.8 | 52 | 2.29 | 26 | 0 |
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| 2004 | 57.6 | 50 | 71.4 | 68 | 43.8 | 36 | 1.31 | 60 | 0 |
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| 2003 | 56.9 | 59 | 71.5 | 67 | 42.3 | 60 | 1.06 | 76 | 0 |
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| 2002 | 56.3 | 65 | 69.3 | 94 | 43.3 | 43 | 1.40 | 59 | 0 |
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| 2001 | 60.7 | 10 | 75 | 19 | 46.4 | 9 | 1.29 | 65 | 0 |
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| 2000 | 54.8 | 91 | 69.6 | 90 | 40 | 90 | 1.03 | 80 | 0 |
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| 1999 | 54.1 | 99 | 68.1 | 107 | 40.1 | 88 | 2.01 | 35 | 0 |
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| 1998 | 60 | 19 | 73.1 | 42 | 47 | 7 | 3.23 | 12 | 0 |
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| 1997 | 59 | 30 | 73.1 | 42 | 45 | 21 | 1.30 | 63 | 0 |
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| 1996 | 57.7 | 49 | 72 | 61 | 43.3 | 43 | 2.23 | 30 | 0 |
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| 1995 | 56.1 | 71 | 68.9 | 97 | 43.2 | 49 | 1.90 | 41 | 0 |
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| 1994 | 58.6 | 36 | 71.9 | 62 | 45.2 | 17 | 2.35 | 24 | 0 |
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| 1993 | 55.9 | 74 | 69.8 | 87 | 41.9 | 62 | 1.48 | 58 | 0 |
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| 1992 | 58.4 | 39 | 73.9 | 35 | 42.8 | 52 | 0.50 | 109 | 0 |
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| 1991 | 58.7 | 35 | 73 | 45 | 44.5 | 26 | 0.53 | 108 | 0 |
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| 1990 | 61.4 | 7 | 75.7 | 15 | 47.1 | 6 | 1.74 | 47 | 0 |
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| 1989 | 56 | 72 | 68.8 | 98 | 43.3 | 43 | 2.27 | 27 | 0 |
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| 1988 | 58.3 | 42 | 72.1 | 59 | 44.5 | 26 | 0.91 | 85 | 0 |
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| 1987 | 59.5 | 25 | 74.7 | 24 | 44.4 | 29 | 0.30 | 116 | 0 |
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| 1986 | 53.3 | 107 | 65.3 | 126 | 41.3 | 70 | 1.71 | 49 | 0 |
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| 1985 | 50.5 | 131 | 62.7 | 133 | 38.3 | 112 | 1.90 | 41 | 0 |
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| 1984 | 54.9 | 88 | 68.7 | 102 | 41 | 79 | 1.04 | 78 | 0 |
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| 1983 | 58.8 | 32 | 74.2 | 28 | 43.4 | 41 | 0.73 | 90 | 0 |
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| 1982 | 52.3 | 120 | 63.5 | 132 | 41.1 | 73 | 4.32 | 7 | 0 |
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| 1981 | 59.6 | 24 | 74.1 | 30 | 45.1 | 19 | 0.61 | 102 | 0 |
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| 1980 | 59.5 | 25 | 75.3 | 18 | 43.7 | 39 | 0.07 | 131 | 0 |
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| 1979 | 62.1 | 5 | 78.3 | 3 | 45.8 | 13 | 0.02 | 133 | 0 |
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| 1978 | 57.5 | 51 | 72.5 | 51 | 42.6 | 54 | 1.17 | 70 | 0 |
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| 1977 | 56.6 | 61 | 71.6 | 66 | 41.5 | 64 | 0.25 | 119 | 0 |
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| 1976 | 57.4 | 53 | 71.2 | 74 | 43.6 | 40 | 0.95 | 84 | 0 |
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| 1975 | 57.5 | 51 | 72.5 | 51 | 42.5 | 55 | 0.42 | 113 | 0 |
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| 1974 | 54.7 | 93 | 70.2 | 83 | 39.3 | 98 | 1.31 | 60 | 0 |
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| 1973 | 53.1 | 112 | 65.3 | 126 | 40.8 | 81 | 5.61 | 3 | 0 |
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| 1972 | 55.3 | 84 | 69.9 | 85 | 40.7 | 83 | 0.65 | 99 | 0 |
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| 1971 | 52.3 | 120 | 65.6 | 124 | 39.1 | 100 | 3.03 | 13 | 0 |
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| 1970 | 51.7 | 127 | 65.8 | 121 | 37.5 | 119 | 1.56 | 56 | 0 |
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| 1969 | 59.3 | 28 | 74.1 | 30 | 44.6 | 25 | 0.70 | 93 | 0 |
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| 1968 | 54.7 | 93 | 69.2 | 95 | 40.2 | 86 | 0.56 | 103 | 0 |
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| 1967 | 58.8 | 32 | 72.5 | 51 | 45.1 | 19 | 1.49 | 57 | 0 |
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| 1966 | 58.6 | 36 | 72.2 | 56 | 44.9 | 22 | 1.00 | 82 | 0 |
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| 1965 | 50.4 | 132 | 64.2 | 130 | 36.5 | 124 | 2.62 | 19 | 0 |
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| 1964 | 56.2 | 68 | 72.3 | 55 | 40.1 | 88 | 0.55 | 106 | 0 |
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| 1963 | 63.6 | 1 | 78.7 | 2 | 48.6 | 1 | 0.19 | 122 | 0 |
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| 1962 | 58 | 46 | 73.6 | 38 | 42.4 | 57 | 1.64 | 52 | 0 |
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| 1961 | 49.2 | 134 | 62.5 | 134 | 35.9 | 130 | 3.44 | 11 | 0 |
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| 1960 | 60 | 19 | 74.3 | 27 | 45.7 | 14 | 2.45 | 22 | 0 |
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| 1959 | 53.9 | 103 | 66.7 | 115 | 41.1 | 73 | 1.59 | 54 | 0 |
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| 1958 | 58.4 | 39 | 73.6 | 38 | 43.2 | 49 | 0.25 | 119 | 0 |
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| 1957 | 54.8 | 91 | 68.7 | 102 | 40.8 | 81 | 1.76 | 46 | 0 |
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| 1956 | 60.5 | 12 | 76.9 | 7 | 44.1 | 33 | 0.10 | 128 | 0 |
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| 1955 | 58.1 | 45 | 72.4 | 54 | 43.8 | 36 | 1.30 | 63 | 0 |
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| 1954 | 59.4 | 27 | 75.6 | 16 | 43.2 | 49 | 0.27 | 118 | 0 |
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| 1953 | 60.5 | 12 | 76.8 | 9 | 44.3 | 32 | 0.13 | 126 | 0 |
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| 1952 | 60.6 | 11 | 76.7 | 10 | 44.4 | 29 | 0.01 | 136 | 0 |
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| 1951 | 54 | 101 | 68.3 | 104 | 39.7 | 94 | 2.44 | 23 | 0 |
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| 1950 | 52.3 | 120 | 64.9 | 128 | 39.7 | 94 | 4.75 | 5 | 0 |
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| 1949 | 55.5 | 83 | 69.8 | 87 | 41.2 | 71 | 2.52 | 21 | 0 |
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| 1948 | 59.7 | 23 | 74.2 | 28 | 45.2 | 17 | 0.73 | 90 | 0 |
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| 1947 | 60.1 | 18 | 75.5 | 17 | 44.7 | 24 | 0.63 | 100 | 0 |
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| 1946 | 52.8 | 114 | 65.7 | 122 | 39.8 | 92 | 3.53 | 10 | 0 |
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| 1945 | 53.4 | 106 | 69.5 | 91 | 37.3 | 121 | 1.62 | 53 | 0 |
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| 1944 | 54.1 | 99 | 69.5 | 91 | 38.7 | 106 | 2.69 | 18 | 0 |
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| 1943 | 58.2 | 43 | 75 | 19 | 41.4 | 67 | 0.49 | 110 | 0 |
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| 1942 | 56.2 | 68 | 71.3 | 71 | 41.1 | 73 | 1.69 | 51 | 0 |
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| 1941 | 49.8 | 133 | 63.6 | 131 | 35.9 | 130 | 2.90 | 15 | 0 |
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| 1940 | 58.8 | 32 | 72.1 | 59 | 45.4 | 15 | 1.94 | 39 | 0 |
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| 1939 | 56.3 | 65 | 71.1 | 75 | 41.5 | 64 | 0.86 | 87 | 0 |
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| 1938 | 60.3 | 17 | 74.1 | 30 | 46.6 | 8 | 1.23 | 67 | 0 |
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| 1937 | 57.4 | 53 | 73.3 | 41 | 41.5 | 64 | 0.28 | 117 | 0 |
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| 1936 | 55.2 | 86 | 71.4 | 68 | 38.9 | 102 | 1.14 | 71 | 0 |
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| 1935 | 58.6 | 36 | 73.8 | 37 | 43.3 | 43 | 0.49 | 110 | 0 |
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| 1934 | 53.8 | 104 | 69.2 | 95 | 38.3 | 112 | 1.74 | 47 | 0 |
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| 1933 | 58.2 | 43 | 74.9 | 23 | 41.4 | 67 | 0.15 | 124 | 0 |
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| 1932 | 56.3 | 65 | 72.2 | 56 | 40.4 | 84 | 0.24 | 121 | 0 |
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| 1931 | 58 | 46 | 72.6 | 50 | 43.4 | 41 | 2.25 | 29 | 0 |
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| 1930 | 55.7 | 81 | 70.3 | 82 | 41.1 | 73 | 1.92 | 40 | 0 |
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| 1929 | 53.3 | 107 | 66.6 | 119 | 40 | 90 | 1.90 | 41 | 0 |
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| 1928 | 56.2 | 68 | 73 | 45 | 39.5 | 97 | 0.02 | 133 | 0 |
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| 1927 | 52.2 | 123 | 64.7 | 129 | 39.8 | 92 | 3.58 | 9 | 0 |
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| 1926 | 51 | 129 | 65.6 | 124 | 36.4 | 126 | 0.56 | 103 | 0 |
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| 1925 | 53.8 | 104 | 66.7 | 115 | 41 | 79 | 1.22 | 68 | 0 |
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| 1924 | 53.2 | 109 | 67.6 | 109 | 38.7 | 106 | 0.47 | 112 | 0 |
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| 1923 | 54.4 | 96 | 66.7 | 115 | 42.2 | 61 | 6.22 | 2 | 0 |
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| 1922 | 59.9 | 21 | 75.8 | 13 | 44 | 34 | 0.02 | 133 | 0 |
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| 1921 | 54.5 | 95 | 71.9 | 62 | 37.1 | 123 | 0.13 | 126 | 0 |
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| 1920 | 55.8 | 78 | 71.3 | 71 | 40.3 | 85 | 1.31 | 60 | 0 |
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| 1919 | 54.9 | 88 | 68.8 | 98 | 41.1 | 73 | 3.59 | 8 | 0 |
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| 1918 | 55.3 | 84 | 69.5 | 91 | 41.2 | 71 | 1.06 | 76 | 0 |
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| 1917 | 57 | 57 | 73.9 | 35 | 40.2 | 86 | 0.05 | 132 | 0 |
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| 1916 | 52.1 | 124 | 68.3 | 104 | 35.8 | 132 | 0.81 | 89 | 0 |
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| 1915 | 52.4 | 119 | 66.9 | 114 | 38 | 115 | 4.33 | 6 | 0 |
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| 1914 | 55 | 87 | 71.4 | 68 | 38.7 | 106 | 0.09 | 130 | 0 |
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| 1913 | 52.7 | 117 | 67.5 | 110 | 37.9 | 117 | 1.89 | 44 | 0 |
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| 1912 | 46.4 | 135 | 58.5 | 135 | 34.4 | 135 | 7.05 | 1 | 0 |
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| 1911 | 54.3 | 98 | 70.5 | 78 | 38 | 115 | 0.69 | 95 | 0 |
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| 1910 | 55.9 | 74 | 72.2 | 56 | 39.7 | 94 | 1.21 | 69 | 0 |
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| 1909 | 54.4 | 96 | 70.2 | 83 | 38.6 | 109 | 1.13 | 72 | 0 |
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| 1908 | 54 | 101 | 70.4 | 80 | 37.6 | 118 | 2.99 | 14 | 0 |
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| 1907 | 54.9 | 88 | 70.7 | 76 | 39 | 101 | 0.90 | 86 | 0 |
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| 1906 | 55.8 | 78 | 72.7 | 49 | 38.8 | 104 | 0.67 | 97 | 0 |
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| 1905 | 56.5 | 63 | 74.5 | 26 | 38.5 | 111 | 1.11 | 74 | 0 |
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| 1904 | 55.8 | 78 | 72.9 | 47 | 38.8 | 104 | 0.39 | 115 | 0 |
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| 1903 | 50.7 | 130 | 65.7 | 122 | 35.7 | 133 | 2.85 | 16 | 0 |
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| 1902 | 52.7 | 117 | 69.8 | 87 | 35.6 | 134 | 0.97 | 83 | 0 |
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| 1901 | 53.1 | 112 | 68.8 | 98 | 37.3 | 121 | 0.56 | 103 | 0 |
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| 1900 | 53.2 | 109 | 68.1 | 107 | 38.2 | 114 | 2.17 | 32 | 0 |
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| 1899 | 55.9 | 74 | 73.1 | 42 | 38.6 | 109 | 1.01 | 81 | 0 |
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| 1898 | 51.8 | 125 | 67.2 | 113 | 36.4 | 126 | 1.70 | 50 | 0 |
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| 1897 | 56.9 | 59 | 72.8 | 48 | 41.1 | 73 | 0.17 | 123 | 0 |
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| 1896 | 52.8 | 114 | 66.7 | 115 | 38.9 | 102 | 1.13 | 72 | 0 |
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| 1895 | 52.8 | 114 | 68.2 | 106 | 37.5 | 119 | 2.58 | 20 | 0 |
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| 1894 | 51.4 | 128 | 66.3 | 120 | 36.5 | 124 | 2.31 | 25 | 0 |
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| 1893 | 53.2 | 109 | 69.9 | 85 | 36.4 | 126 | 0.70 | 93 | 0 |
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| 1892 | 57.8 | 48 | 76.2 | 11 | 39.3 | 98 | 0.10 | 128 | 0 |
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| 1891 | 51.8 | 125 | 67.4 | 112 | 36.1 | 129 | 2.27 | 27 | 0 |
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