Every January in Pullman, WA from 1893 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 | 34.6 | 18 | 39.7 | 15 | 29.5 | 19 | 1.47 | 98 | 0 |
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| 2025 | 30.3 | 67 | 36.8 | 52 | 23.7 | 79 | 1.57 | 94 | 0 |
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| 2024 | | | 35.1 | 77 | | | 1.75 | 89 | 5 |
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| 2023 | 32.3 | 42 | 37.3 | 47 | 27.2 | 41 | 1.03 | 112 | 2 |
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| 2022 | 30.6 | 65 | 35.9 | 63 | 25.2 | 63 | 2.45 | 59 | 1 |
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| 2021 | 35.3 | 12 | 39.5 | 17 | 31.1 | 9 | 2.43 | 61 | 0 |
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| 2020 | 35 | 15 | 40.3 | 14 | 29.6 | 17 | 3.36 | 26 | 0 |
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| 2019 | 34.1 | 20 | 39.2 | 20 | 29.1 | 22 | 1.91 | 78 | 0 |
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| 2018 | 37.4 | 5 | 42.3 | 6 | 32.5 | 6 | 2.19 | 67 | 0 |
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| 2017 | 22 | 107 | 28.2 | 116 | 15.9 | 111 | 1.50 | 97 | 0 |
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| 2016 | 33.5 | 26 | 38.1 | 33 | 28.9 | 24 | 2.62 | 52 | 0 |
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| 2015 | 35.6 | 11 | 40.4 | 12 | 30.8 | 11 | 1.61 | 92 | 0 |
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| 2014 | 33.1 | 31 | 37.7 | 39 | 28.5 | 29 | 1.91 | 78 | 0 |
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| 2013 | 27.8 | 84 | 33.2 | 94 | 22.4 | 86 | 1.17 | 107 | 0 |
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| 2012 | 32.5 | 40 | 39.1 | 21 | 25.8 | 57 | 2.89 | 41 | 0 |
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| 2011 | 32.1 | 44 | 38.3 | 31 | 25.9 | 54 | 2.43 | 61 | 2 |
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| 2010 | 37.1 | 6 | 41.9 | 8 | 32.4 | 7 | | | 0 |
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| 2009 | 30.2 | 68 | 35.8 | 65 | 23.9 | 77 | 2.79 | 44 | 1 |
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| 2008 | 27.1 | 89 | 33.4 | 92 | 20.8 | 94 | 2.49 | 58 | 0 |
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| 2007 | 26.2 | 93 | 32.6 | 99 | 19.7 | 101 | 2.30 | 63 | 0 |
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| 2006 | 39.4 | 2 | 44.1 | 3 | 34.7 | 1 | 1.47 | 98 | 0 |
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| 2005 | 33.7 | 22 | 39.7 | 15 | 27.6 | 34 | 0.40 | 121 | 0 |
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| 2004 | 31 | 58 | 35.1 | 77 | 26.1 | 50 | 3.37 | 25 | 1 |
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| 2003 | 37 | 7 | 41.5 | 9 | 32.6 | 5 | 2.07 | 72 | 0 |
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| 2002 | 32 | 45 | 36.4 | 55 | 27.5 | 37 | 2.56 | 57 | 0 |
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| 2001 | 29.9 | 72 | 34.9 | 80 | 24.8 | 69 | 1.31 | 104 | 0 |
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| 2000 | 31 | 58 | 35.7 | 68 | 26.3 | 46 | 0.62 | 117 | 0 |
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| 1999 | 33.6 | 24 | 38.4 | 29 | 28.8 | 25 | 0.59 | 118 | 0 |
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| 1998 | 32 | 45 | 37.5 | 45 | 26.5 | 45 | | | 0 |
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| 1997 | 29.7 | 73 | 35.7 | 68 | 23.8 | 78 | 2.66 | 49 | 2 |
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| 1996 | | | 35.4 | 73 | 24.8 | 69 | 3.76 | 18 | 4 |
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| 1995 | 32.8 | 37 | 37.9 | 36 | 27.6 | 34 | 2.57 | 54 | 2 |
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| 1994 | 37.9 | 4 | 42.9 | 4 | 32.8 | 4 | 1.87 | 84 | 2 |
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| 1993 | 24 | 100 | 29.7 | 113 | 18.2 | 103 | 1.93 | 77 | 0 |
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| 1992 | 34.3 | 19 | 38.3 | 31 | 30.1 | 14 | 2.07 | 72 | 1 |
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| 1991 | 28.8 | 79 | 34.5 | 82 | 23.2 | 83 | 2.01 | 74 | 0 |
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| 1990 | 33.9 | 21 | 38.5 | 27 | 29.3 | 21 | 4.40 | 8 | 0 |
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| 1989 | 30 | 71 | 35.5 | 72 | 24.5 | 73 | 3.27 | 31 | 0 |
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| 1988 | 27.9 | 81 | 33.9 | 85 | 21.9 | 88 | 2.15 | 68 | 1 |
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| 1987 | 27.9 | 81 | 33.5 | 91 | 22.2 | 87 | 1.90 | 80 | 0 |
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| 1986 | 34.8 | 17 | 39.5 | 17 | 29.8 | 16 | 3.35 | 28 | 2 |
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| 1985 | 21.9 | 108 | 27.8 | 117 | 15.5 | 113 | 0.49 | 119 | 1 |
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| 1984 | 31.9 | 48 | 37.8 | 38 | 26.1 | 50 | 2.00 | 75 | 3 |
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| 1983 | 36.5 | 8 | 42.5 | 5 | 30.6 | 13 | 2.82 | 43 | 0 |
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| 1982 | 27.5 | 88 | 33.2 | 94 | 21.8 | 89 | 3.99 | 14 | 0 |
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| 1981 | 35.8 | 10 | 40.4 | 12 | 31.2 | 8 | 1.04 | 110 | 0 |
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| 1980 | 23.5 | 105 | 30.1 | 110 | 16.8 | 110 | 3.08 | 36 | 1 |
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| 1979 | 14.4 | 113 | 21.7 | 122 | 7.1 | 121 | 1.24 | 105 | 0 |
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| 1978 | 31.4 | 52 | 36 | 62 | 26.8 | 43 | 2.00 | 75 | 0 |
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| 1977 | 24 | 100 | 29.9 | 112 | 18 | 105 | 0.40 | 121 | 0 |
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| 1976 | 31.8 | 49 | 37.6 | 41 | 25.9 | 54 | 1.60 | 93 | 0 |
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| 1975 | 27.8 | 84 | 34.5 | 82 | 21.4 | 91 | 4.38 | 9 | 1 |
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| 1974 | 23.9 | 103 | 30.6 | 107 | 17.2 | 108 | 5.08 | 4 | 0 |
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| 1973 | 27.8 | 84 | 34.4 | 84 | 21.2 | 93 | 1.87 | 84 | 0 |
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| 1972 | 27.1 | 89 | 33.9 | 85 | 20.5 | 95 | 2.98 | 38 | 1 |
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| 1971 | 33.2 | 29 | 38.6 | 25 | 27.8 | 32 | 2.95 | 39 | 0 |
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| 1970 | 29.6 | 74 | 35.1 | 77 | 24.2 | 76 | 6.23 | 2 | 0 |
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| 1969 | 20.7 | 109 | 29 | 115 | 12.4 | 118 | 3.82 | 17 | 0 |
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| 1968 | 30.7 | 64 | 37 | 50 | 24.4 | 75 | 1.04 | 110 | 0 |
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| 1967 | 35.2 | 13 | 40.5 | 11 | 29.9 | 15 | 3.52 | 22 | 0 |
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| 1966 | 30.9 | 61 | 36.8 | 52 | 25 | 66 | 4.07 | 12 | 0 |
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| 1965 | 31 | 58 | 36.3 | 57 | 25.7 | 59 | 2.95 | 39 | 0 |
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| 1964 | 31.2 | 54 | 36.3 | 57 | 26.1 | 50 | 4.50 | 6 | 0 |
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| 1963 | 22.6 | 106 | 29.7 | 113 | 15.5 | 113 | 1.02 | 113 | 0 |
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| 1962 | 27.1 | 89 | 33.9 | 85 | 20.3 | 97 | 1.47 | 98 | 0 |
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| 1961 | 33 | 32 | 38.5 | 27 | 27.6 | 34 | 1.56 | 95 | 0 |
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| 1960 | 24.4 | 98 | 30.7 | 106 | 18 | 105 | 1.90 | 80 | 2 |
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| 1959 | 32.4 | 41 | 37.9 | 36 | 26.2 | 49 | 5.22 | 3 | 2 |
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| 1958 | 33.7 | 22 | 38.6 | 25 | 28.8 | 25 | 3.13 | 34 | 0 |
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| 1957 | 13.5 | 115 | 21.4 | 123 | 5.6 | 123 | 2.57 | 54 | 3 |
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| 1956 | 30.8 | 62 | 35.6 | 71 | 26 | 53 | 3.19 | 33 | 0 |
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| 1955 | 28.6 | 80 | 33.9 | 85 | 23.4 | 80 | 1.12 | 109 | 0 |
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| 1954 | 29.2 | 78 | 35.3 | 75 | 23.2 | 83 | 3.86 | 16 | 0 |
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| 1953 | 39.8 | 1 | 45.2 | 2 | 34.4 | 2 | 8.60 | 1 | 0 |
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| 1952 | 24 | 100 | 31.1 | 104 | 17 | 109 | 1.85 | 87 | 0 |
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| 1951 | | | | | | | 3.65 | 20 | 31 |
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| 1950 | | | 20.9 | 124 | 1.9 | 126 | 3.59 | 21 | 4 |
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| 1949 | 11.1 | 116 | 19.7 | 126 | 2.5 | 124 | 0.85 | 114 | 0 |
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| 1948 | 29.5 | 75 | 34.7 | 81 | 24.7 | 72 | 2.63 | 51 | 3 |
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| 1947 | | | 33.4 | 92 | 20.3 | 97 | 2.45 | 59 | 5 |
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| 1946 | 31.1 | 56 | 36.7 | 54 | 25.3 | 62 | 3.49 | 24 | 2 |
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| 1945 | 33.4 | 27 | 37.2 | 48 | 29.6 | 17 | 1.89 | 83 | 3 |
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| 1944 | 32 | 45 | 37.6 | 41 | 26.3 | 46 | 0.45 | 120 | 0 |
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| 1943 | | | | | 15.9 | 111 | 3.36 | 26 | 8 |
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| 1942 | 24.3 | 99 | 30.9 | 105 | 17.7 | 107 | 1.47 | 98 | 0 |
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| 1941 | 33.2 | 29 | 38.8 | 24 | 27.8 | 32 | 1.86 | 86 | 2 |
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| 1940 | 32.8 | 37 | 39.4 | 19 | 25.1 | 65 | 2.12 | 69 | 3 |
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| 1939 | 35.1 | 14 | 39.1 | 21 | 31.1 | 9 | 1.19 | 106 | 0 |
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| 1938 | 31.8 | 49 | 36.2 | 59 | 27.4 | 38 | 1.37 | 102 | 0 |
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| 1937 | 10.8 | 117 | 19.6 | 127 | 2.3 | 125 | | | 2 |
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| 1936 | 31.2 | 54 | 35.9 | 63 | 26.8 | 43 | | | 2 |
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| 1935 | 31.3 | 53 | 37.7 | 39 | 24.9 | 68 | 2.57 | 54 | 0 |
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| 1934 | 39.4 | 2 | 45.6 | 1 | 33.2 | 3 | 2.77 | 46 | 0 |
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| 1933 | 30.6 | 65 | 35.8 | 65 | 25.4 | 61 | 4.49 | 7 | 0 |
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| 1932 | 27.8 | 84 | 32.6 | 99 | 22.8 | 85 | 2.66 | 49 | 3 |
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| 1931 | 32.9 | 35 | 37.6 | 41 | 27.9 | 31 | 2.30 | 63 | 2 |
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| 1930 | 13.6 | 114 | 20.8 | 125 | 6.4 | 122 | 1.90 | 80 | 0 |
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| 1929 | 18.4 | 112 | 24.1 | 120 | 12.7 | 117 | | | 0 |
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| 1928 | 30.1 | 70 | 33.6 | 90 | 25.8 | 57 | | | 2 |
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| 1927 | 27.9 | 81 | 32.5 | 101 | 23.4 | 80 | 2.87 | 42 | 0 |
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| 1926 | 29.5 | 75 | 33.8 | 89 | 25.2 | 63 | 2.20 | 66 | 0 |
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| 1925 | 33.3 | 28 | 37.6 | 41 | 29 | 23 | | | 0 |
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| 1924 | 26.5 | 92 | 31.6 | 102 | 21.4 | 91 | | | 0 |
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| 1923 | 32.9 | 35 | 37.1 | 49 | 28.7 | 27 | 3.25 | 32 | 0 |
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| 1922 | 19.8 | 110 | 26 | 119 | 13.5 | 116 | 2.69 | 48 | 0 |
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| 1921 | 30.2 | 68 | 35.8 | 65 | 24.5 | 73 | 2.79 | 44 | 0 |
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| 1920 | 30.8 | 62 | 36.4 | 55 | 25.7 | 59 | 2.62 | 52 | 1 |
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| 1919 | 33 | 32 | 38.9 | 23 | 27 | 42 | 2.10 | 71 | 0 |
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| 1918 | 33 | 32 | 37.5 | 45 | 28.6 | 28 | 3.12 | 35 | 0 |
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| 1917 | 25.3 | 95 | 30.4 | 108 | 20.4 | 96 | 3.50 | 23 | 1 |
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| 1916 | | | 22.5 | 121 | 10 | 120 | | | 4 |
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| 1915 | 25.2 | 96 | 30.1 | 110 | 20.2 | 99 | 1.15 | 108 | 0 |
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| 1914 | 35 | 15 | 40.6 | 10 | 29.4 | 20 | 4.10 | 11 | 0 |
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| 1913 | 23.9 | 103 | 32.7 | 98 | 15 | 115 | 4.95 | 5 | 3 |
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| 1912 | 29.3 | 77 | 35.7 | 68 | 23.3 | 82 | | | 3 |
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| 1911 | | | 35.4 | 73 | | | 1.67 | 91 | 4 |
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| 1910 | 25.7 | 94 | 31.4 | 103 | 20.1 | 100 | | | 2 |
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| 1909 | | | 32.8 | 97 | 18.1 | 104 | 4.21 | 10 | 4 |
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| 1908 | 32.6 | 39 | 38.1 | 33 | 27.3 | 40 | 1.33 | 103 | 2 |
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| 1907 | 19.7 | 111 | 27.4 | 118 | 11.9 | 119 | | | 0 |
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| 1906 | 33.6 | 24 | 38.4 | 29 | 28 | 30 | 1.80 | 88 | 1 |
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| 1905 | | | | | | | 1.68 | 90 | 6 |
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| 1904 | 31.1 | 56 | 36.2 | 59 | 25.9 | 54 | 2.24 | 65 | 2 |
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| 1903 | 31.7 | 51 | 36.1 | 61 | 27.4 | 38 | 3.71 | 19 | 0 |
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| 1902 | | | | | | | 1.55 | 96 | 10 |
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| 1901 | | | | | 25 | 66 | 0.81 | 115 | 5 |
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| 1900 | 36.4 | 9 | 42.1 | 7 | 30.7 | 12 | 3.03 | 37 | 0 |
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| 1899 | | | 37 | 50 | | | 3.88 | 15 | 7 |
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| 1898 | 25 | 97 | 30.2 | 109 | 19.4 | 102 | 3.30 | 30 | 2 |
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| 1897 | | | 35.3 | 75 | 24.8 | 69 | 2.12 | 69 | 4 |
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| 1896 | 32.3 | 42 | 38.1 | 33 | 26.3 | 46 | 2.75 | 47 | 2 |
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| 1895 | | | 32.9 | 96 | 21.7 | 90 | 4.06 | 13 | 6 |
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| 1894 | | | | | | | 3.33 | 29 | 11 |
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| 1893 | | | | | | | 0.75 | 116 | 31 |
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