Every summer 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 | 71 | 8 | 86.4 | 9 | 55.6 | 4 | 1.67 | 90 | 0 |
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| 2025 | 69.8 | 16 | 85.4 | 18 | 54.2 | 15 | 1.45 | 95 | 7 |
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| 2024 | 70.3 | 9 | 86.5 | 8 | 54.1 | 17 | 1.16 | 108 | 0 |
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| 2023 | 66.4 | 75 | 80 | 105 | 52.7 | 49 | 5.06 | 12 | 2 |
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| 2022 | 70.2 | 10 | 86 | 14 | 54.4 | 13 | 0.91 | 113 | 0 |
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| 2021 | 71.3 | 6 | 87.4 | 5 | 55.2 | 7 | 2.66 | 56 | 0 |
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| 2020 | 70.2 | 10 | 86.3 | 10 | 54.2 | 15 | 0.54 | 127 | 0 |
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| 2019 | 67.5 | 58 | 83.1 | 52 | 51.8 | 73 | 1.29 | 100 | 0 |
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| 2018 | 68.6 | 36 | 84 | 31 | 53.3 | 34 | 2.54 | 62 | 0 |
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| 2017 | | | | | | | | | 31 |
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| 2016 | 69.7 | 18 | 86.2 | 12 | 53.2 | 37 | 1.09 | 112 | 0 |
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| 2015 | 68.7 | 32 | 84.1 | 29 | 53.3 | 34 | 1.88 | 82 | 0 |
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| 2014 | 67 | 67 | 82.5 | 65 | 51.6 | 77 | 2.83 | 51 | 0 |
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| 2013 | 71.4 | 4 | 87.6 | 4 | 55.2 | 7 | 0.34 | 132 | 0 |
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| 2012 | 72.2 | 2 | 88.3 | 2 | 56.1 | 2 | 0.15 | 134 | 0 |
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| 2011 | 69 | 26 | 84.9 | 21 | 53.1 | 39 | 0.75 | 121 | 0 |
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| 2010 | 67.3 | 62 | 82.1 | 69 | 52.5 | 55 | 2.78 | 52 | 1 |
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| 2009 | 64.7 | 109 | 78.9 | 118 | 50.6 | 94 | 5.76 | 6 | 0 |
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| 2008 | 68.3 | 41 | 83.9 | 33 | 52.8 | 47 | 1.87 | 83 | 0 |
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| 2007 | 71.4 | 4 | 87.2 | 6 | 55.7 | 3 | 2.18 | 74 | 0 |
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| 2006 | 71.7 | 3 | 87.8 | 3 | 55.5 | 5 | 0.47 | 129 | 0 |
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| 2005 | 68 | 46 | 83.9 | 33 | 52.1 | 62 | 1.21 | 106 | 0 |
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| 2004 | 65.4 | 101 | 79.3 | 116 | 51.4 | 83 | 5.18 | 9 | 0 |
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| 2003 | 70.1 | 12 | 85.1 | 20 | 55.1 | 10 | 2.87 | 49 | 0 |
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| 2002 | 69.5 | 21 | 85.2 | 19 | 53.9 | 23 | 1.30 | 99 | 0 |
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| 2001 | 71.1 | 7 | 87.1 | 7 | 55.1 | 10 | 0.71 | 122 | 0 |
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| 2000 | 69.8 | 16 | 86.3 | 10 | 53.3 | 34 | 1.29 | 100 | 0 |
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| 1999 | 67.3 | 62 | 82.7 | 59 | 51.9 | 69 | 1.78 | 86 | 0 |
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| 1998 | 65.7 | 95 | 79.8 | 109 | 51.5 | 80 | 5.16 | 10 | 0 |
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| 1997 | 67.2 | 65 | 81.8 | 76 | 52.5 | 55 | 2.98 | 48 | 0 |
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| 1996 | 70.1 | 12 | 86.2 | 12 | 54 | 19 | 0.57 | 126 | 0 |
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| 1995 | 66.8 | 69 | 81.6 | 81 | 52 | 63 | 4.12 | 19 | 0 |
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| 1994 | 70 | 14 | 85.9 | 15 | 54 | 19 | 0.90 | 114 | 0 |
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| 1993 | 63.2 | 125 | 77.7 | 130 | 48.6 | 112 | 6.25 | 4 | 0 |
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| 1992 | 65.7 | 95 | 79.9 | 106 | 51.5 | 80 | 4.18 | 18 | 0 |
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| 1991 | 69.4 | 22 | 84.3 | 28 | 54.5 | 12 | 1.78 | 86 | 0 |
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| 1990 | 68.9 | 28 | 84 | 31 | 53.8 | 25 | 2.63 | 58 | 0 |
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| 1989 | 67.8 | 51 | 82.7 | 59 | 53 | 41 | 3.79 | 23 | 0 |
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| 1988 | 72.9 | 1 | 88.8 | 1 | 57 | 1 | 1.19 | 107 | 0 |
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| 1987 | 67.6 | 54 | 82.1 | 69 | 53.1 | 39 | 3.38 | 30 | 0 |
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| 1986 | 68.9 | 28 | 83.8 | 36 | 54 | 19 | 1.80 | 85 | 0 |
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| 1985 | 68.8 | 31 | 83.6 | 40 | 54 | 19 | 2.77 | 53 | 0 |
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| 1984 | 69.7 | 18 | 83.8 | 36 | 55.5 | 5 | 4.23 | 16 | 0 |
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| 1983 | 68.6 | 36 | 83.6 | 40 | 53.5 | 30 | 1.73 | 88 | 0 |
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| 1982 | 68.4 | 40 | 83.2 | 50 | 53.6 | 29 | 3.13 | 40 | 0 |
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| 1981 | 68.6 | 36 | 83.3 | 48 | 53.8 | 25 | 1.84 | 84 | 0 |
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| 1980 | 67.6 | 54 | 83.5 | 43 | 51.8 | 73 | 0.63 | 125 | 0 |
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| 1979 | 66.7 | 71 | 82 | 73 | 51.4 | 83 | 3.31 | 35 | 0 |
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| 1978 | 66.3 | 80 | 81.3 | 89 | 51.2 | 88 | 1.23 | 103 | 0 |
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| 1977 | 68 | 46 | 82.6 | 63 | 53.5 | 30 | 3.63 | 25 | 0 |
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| 1976 | 66.7 | 71 | 81.9 | 74 | 51.4 | 83 | 3.42 | 28 | 0 |
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| 1975 | 65.5 | 99 | 80.2 | 102 | 50.8 | 92 | 2.27 | 72 | 0 |
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| 1974 | 68 | 46 | 83.7 | 39 | 52.2 | 61 | 1.50 | 92 | 0 |
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| 1973 | 67.4 | 59 | 82.1 | 69 | 52.7 | 49 | 2.65 | 57 | 0 |
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| 1972 | 66.1 | 84 | 80.7 | 95 | 51.6 | 77 | 2.15 | 76 | 0 |
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| 1971 | 68.3 | 41 | 83.2 | 50 | 53.4 | 33 | 0.54 | 127 | 0 |
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| 1970 | 69 | 26 | 83.6 | 40 | 54.3 | 14 | 2.68 | 54 | 0 |
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| 1969 | 67.2 | 65 | 81.7 | 80 | 52.7 | 49 | 5.36 | 8 | 0 |
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| 1968 | 65.1 | 105 | 79 | 117 | 51.2 | 88 | 3.75 | 24 | 0 |
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| 1967 | 65.3 | 103 | 78.7 | 124 | 51.9 | 69 | 6.08 | 5 | 0 |
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| 1966 | 68.2 | 43 | 83.4 | 44 | 53 | 41 | 3.36 | 31 | 0 |
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| 1965 | 65.9 | 88 | 79.8 | 109 | 52 | 63 | 3.92 | 21 | 0 |
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| 1964 | 66.7 | 71 | 81.5 | 84 | 51.9 | 69 | 2.63 | 58 | 0 |
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| 1963 | 67.6 | 54 | 82.5 | 65 | 52.8 | 47 | 4.43 | 14 | 0 |
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| 1962 | 65.8 | 92 | 81.1 | 91 | 50.5 | 96 | 2.21 | 73 | 0 |
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| 1961 | 69.9 | 15 | 84.6 | 23 | 55.2 | 7 | 2.52 | 64 | 0 |
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| 1960 | 68.7 | 32 | 84.4 | 26 | 52.9 | 43 | 0.86 | 115 | 0 |
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| 1959 | 69.3 | 23 | 84.7 | 22 | 53.9 | 23 | 0.66 | 123 | 0 |
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| 1958 | 66.2 | 83 | 81 | 92 | 51.4 | 83 | 3.20 | 39 | 0 |
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| 1957 | 66.8 | 69 | 80.9 | 94 | 52.6 | 53 | 4.20 | 17 | 0 |
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| 1956 | 68.2 | 43 | 83.8 | 36 | 52.6 | 53 | 0.76 | 120 | 0 |
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| 1955 | 68.2 | 43 | 82.7 | 59 | 53.7 | 27 | 3.33 | 34 | 0 |
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| 1954 | 68.6 | 36 | 84.6 | 23 | 52.7 | 49 | 1.13 | 111 | 0 |
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| 1953 | 68.7 | 32 | 83.9 | 33 | 53.5 | 30 | 1.38 | 96 | 0 |
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| 1952 | 67.3 | 62 | 82.6 | 63 | 52 | 63 | 2.33 | 70 | 0 |
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| 1951 | 63.6 | 119 | 78.2 | 127 | 49 | 106 | 3.11 | 43 | 0 |
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| 1950 | 63.9 | 114 | 78.8 | 121 | 49 | 106 | 3.29 | 36 | 0 |
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| 1949 | 67 | 67 | 81.8 | 76 | 52.3 | 59 | 1.99 | 80 | 0 |
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| 1948 | 67.6 | 54 | 82.7 | 59 | 52.5 | 55 | 3.36 | 31 | 0 |
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| 1947 | 64.9 | 106 | 79.8 | 109 | 50 | 99 | 7.62 | 1 | 0 |
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| 1946 | 67.7 | 52 | 83 | 54 | 52.4 | 58 | 2.53 | 63 | 0 |
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| 1945 | 64 | 113 | 80.1 | 103 | 47.9 | 118 | 2.60 | 61 | 0 |
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| 1944 | 63.6 | 119 | 78.5 | 126 | 48.6 | 112 | 3.08 | 46 | 0 |
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| 1943 | 66 | 85 | 81.6 | 81 | 50.3 | 97 | 1.22 | 105 | 0 |
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| 1942 | 66.4 | 75 | 82.2 | 68 | 50.6 | 94 | 0.40 | 131 | 0 |
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| 1941 | 65.8 | 92 | 79.8 | 109 | 51.9 | 69 | 4.97 | 13 | 0 |
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| 1940 | 69.6 | 20 | 85.6 | 17 | 53.7 | 27 | 1.15 | 109 | 0 |
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| 1939 | 66 | 85 | 81.4 | 86 | 50.7 | 93 | 1.35 | 98 | 0 |
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| 1938 | 66.6 | 74 | 81.9 | 74 | 51.2 | 88 | 1.48 | 94 | 0 |
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| 1937 | 66.4 | 75 | 81.4 | 86 | 51.5 | 80 | 6.59 | 2 | 0 |
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| 1936 | 69.1 | 25 | 84.1 | 29 | 54.1 | 17 | 5.14 | 11 | 0 |
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| 1935 | 67.4 | 59 | 83.4 | 44 | 51.4 | 83 | 0.81 | 117 | 0 |
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| 1934 | 67.9 | 50 | 83.4 | 44 | 52.3 | 59 | 2.62 | 60 | 0 |
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| 1933 | 68.9 | 28 | 84.6 | 23 | 53.2 | 37 | 2.68 | 54 | 0 |
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| 1932 | 67.4 | 59 | 83.1 | 52 | 51.8 | 73 | 1.23 | 103 | 0 |
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| 1931 | 68.7 | 32 | 84.4 | 26 | 52.9 | 43 | 3.13 | 40 | 0 |
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| 1930 | 66.4 | 75 | 81 | 92 | 51.8 | 73 | 6.34 | 3 | 0 |
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| 1929 | 67.7 | 52 | 83.4 | 44 | 52 | 63 | 0.79 | 118 | 0 |
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| 1928 | 63 | 126 | 78.2 | 127 | 47.8 | 119 | 3.57 | 27 | 0 |
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| 1927 | 63.9 | 114 | 77.6 | 131 | 50.2 | 98 | 3.11 | 43 | 0 |
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| 1926 | 66.3 | 80 | 80.6 | 98 | 52 | 63 | 2.99 | 47 | 0 |
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| 1925 | 65.8 | 92 | 79.9 | 106 | 51.6 | 77 | 2.34 | 69 | 0 |
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| 1924 | 64.8 | 107 | 80.7 | 95 | 48.9 | 108 | 0.25 | 133 | 0 |
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| 1923 | 65.9 | 88 | 79.9 | 106 | 52 | 63 | 3.35 | 33 | 0 |
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| 1922 | 68 | 46 | 83 | 54 | 52.9 | 43 | 1.51 | 91 | 0 |
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| 1921 | 66.3 | 80 | 81.6 | 81 | 51.1 | 91 | 3.25 | 38 | 0 |
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| 1920 | 64.6 | 110 | 80.4 | 100 | 48.9 | 108 | 0.65 | 124 | 0 |
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| 1919 | 69.3 | 23 | 85.7 | 16 | 52.9 | 43 | 2.07 | 79 | 0 |
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| 1918 | 66.4 | 75 | 82.9 | 57 | 50 | 99 | 2.18 | 74 | 0 |
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| 1917 | 64.8 | 107 | 81.2 | 90 | 48.5 | 114 | 0.44 | 130 | 0 |
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| 1916 | 65.7 | 95 | 82.1 | 69 | 49.2 | 104 | 0.79 | 118 | 0 |
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| 1915 | 61 | 134 | 76 | 134 | 46 | 131 | 5.54 | 7 | 0 |
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| 1914 | 65.5 | 99 | 81.8 | 76 | 49.2 | 104 | 0.83 | 116 | 0 |
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| 1913 | 65.9 | 88 | 81.8 | 76 | 50 | 99 | 2.13 | 77 | 0 |
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| 1912 | 63.8 | 117 | 78.9 | 118 | 48.7 | 111 | 2.84 | 50 | 0 |
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| 1911 | 63.7 | 118 | 80.1 | 103 | 47.3 | 124 | 3.29 | 36 | 0 |
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| 1910 | 65.7 | 95 | 83.3 | 48 | 48.1 | 115 | 1.49 | 93 | 0 |
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| 1909 | 65.9 | 88 | 82.9 | 57 | 48.9 | 108 | 2.28 | 71 | 0 |
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| 1908 | 61.8 | 131 | 76.8 | 133 | 46.8 | 125 | 3.42 | 28 | 0 |
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| 1907 | 61.8 | 131 | 78.7 | 124 | 44.9 | 134 | 2.45 | 65 | 0 |
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| 1906 | 62.5 | 130 | 78.2 | 127 | 46.8 | 125 | 2.41 | 67 | 0 |
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| 1905 | 63.6 | 119 | 79.8 | 109 | 47.5 | 122 | 1.92 | 81 | 0 |
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| 1904 | 62.8 | 127 | 78.9 | 118 | 46.8 | 125 | 3.84 | 22 | 0 |
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| 1903 | 64.2 | 112 | 80.6 | 98 | 47.8 | 119 | 2.39 | 68 | 0 |
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| 1902 | 63.5 | 123 | 80.3 | 101 | 46.8 | 125 | 1.28 | 102 | 0 |
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| 1901 | 66 | 85 | 82.3 | 67 | 49.7 | 103 | 2.45 | 65 | 0 |
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| 1900 | 65.3 | 103 | 83 | 54 | 47.5 | 122 | 1.15 | 109 | 0 |
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| 1899 | 62.6 | 129 | 78.8 | 121 | 46.4 | 129 | 1.36 | 97 | 0 |
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| 1898 | 63.9 | 114 | 79.7 | 114 | 48 | 116 | 4.31 | 15 | 0 |
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| 1897 | 63.4 | 124 | 78.8 | 121 | 48 | 116 | 3.10 | 45 | 0 |
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| 1896 | 65.4 | 101 | 80.7 | 95 | 50 | 99 | 3.61 | 26 | 0 |
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| 1895 | 61.6 | 133 | 77 | 132 | 46.2 | 130 | 3.13 | 40 | 0 |
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| 1894 | 64.5 | 111 | 81.4 | 86 | 47.7 | 121 | 1.71 | 89 | 0 |
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| 1893 | 63.6 | 119 | 81.5 | 84 | 45.8 | 133 | 2.09 | 78 | 0 |
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| 1892 | 62.8 | 127 | 79.7 | 114 | 45.9 | 132 | 4.09 | 20 | 0 |
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| 1891 | | | | | | | | | 61 |
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