Every January in Challis, ID from 1895 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 | 26.8 | 12 | 37.5 | 7 | 16.1 | 15 | 0.18 | 92 | 0 |
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| 2025 | 18.4 | 65 | 29.6 | 66 | 7.2 | 70 | 0.19 | 91 | 0 |
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| 2024 | 20.5 | 47 | 31.2 | 49 | 9.9 | 52 | 0.33 | 60 | 0 |
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| 2023 | 13.4 | 95 | 23.5 | 99 | 3.2 | 99 | 0.57 | 30 | 0 |
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| 2022 | | | | | 7.1 | 72 | 0.34 | 57 | 10 |
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| 2021 | 19.5 | 61 | 30.7 | 52 | 8.3 | 65 | 0.26 | 79 | 0 |
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| 2020 | 19.6 | 59 | 30.2 | 58 | 9.1 | 60 | 0.89 | 12 | 0 |
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| 2019 | 20.9 | 41 | 32.4 | 38 | 9.4 | 56 | 0.23 | 83 | 0 |
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| 2018 | 28.8 | 3 | 38.4 | 5 | 19.1 | 6 | 0.20 | 89 | 0 |
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| 2017 | 2.7 | 107 | 13.6 | 108 | -8.3 | 116 | 1.50 | 4 | 0 |
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| 2016 | 15 | 89 | 24.9 | 94 | 5.1 | 88 | 0.56 | 33 | 0 |
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| 2015 | 25.1 | 17 | 33 | 36 | 17.2 | 13 | 0.12 | 102 | 0 |
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| 2014 | 25.6 | 15 | 37.3 | 8 | 13.9 | 25 | 0.23 | 83 | 0 |
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| 2013 | 14.4 | 91 | 27.5 | 80 | 1.2 | 106 | 0.21 | 87 | 0 |
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| 2012 | 24 | 24 | 35.5 | 21 | 12.5 | 31 | 0.18 | 92 | 0 |
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| 2011 | 18.7 | 64 | 28.2 | 76 | 9.1 | 60 | 0.14 | 100 | 0 |
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| 2010 | 20.8 | 42 | 29.9 | 62 | 11.6 | 33 | 0.33 | 60 | 0 |
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| 2009 | 24 | 24 | 33.6 | 34 | 14.4 | 22 | 0.27 | 75 | 0 |
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| 2008 | 13 | 96 | 24.6 | 95 | 2.9 | 101 | 0.25 | 80 | 3 |
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| 2007 | 17.4 | 75 | 27.7 | 78 | 7.2 | 70 | 0.17 | 95 | 0 |
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| 2006 | 21.3 | 38 | 31.6 | 46 | 11 | 38 | 0.53 | 35 | 3 |
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| 2005 | 19.6 | 59 | 30.7 | 52 | 8.5 | 64 | 0.17 | 95 | 0 |
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| 2004 | 15.4 | 85 | 25.5 | 92 | 5.3 | 85 | 0.18 | 92 | 0 |
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| 2003 | 28 | 6 | 36.5 | 14 | 19.5 | 4 | 0.47 | 41 | 0 |
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| 2002 | 16.5 | 79 | 25.9 | 90 | 7.1 | 72 | 0.28 | 71 | 0 |
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| 2001 | 9.7 | 101 | 20.5 | 102 | -1.2 | 109 | 0.32 | 64 | 0 |
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| 2000 | | | | | 11.5 | 34 | 0.89 | 12 | 16 |
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| 1999 | 24.4 | 22 | 33.9 | 31 | 14.9 | 20 | 0.45 | 44 | 0 |
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| 1996 | | | | | 14.2 | 24 | | | 8 |
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| 1995 | | | | | 11.5 | 34 | 0.98 | 10 | 8 |
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| 1994 | 28.4 | 4 | 38.9 | 3 | 17.9 | 11 | 0.11 | 103 | 1 |
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| 1993 | | | | | 4.4 | 95 | 0.60 | 27 | 7 |
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| 1992 | | | | | 14.9 | 20 | 0.03 | 110 | 6 |
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| 1991 | 19.1 | 63 | 29.9 | 62 | 8.2 | 66 | 0.17 | 95 | 0 |
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| 1990 | 27.9 | 7 | 36.3 | 17 | 19.4 | 5 | 0.52 | 36 | 0 |
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| 1989 | 19.4 | 62 | 31.8 | 44 | 7.3 | 69 | 0.30 | 67 | 1 |
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| 1988 | 17.9 | 70 | 27.7 | 78 | 7.5 | 68 | 0.28 | 71 | 2 |
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| 1987 | 20.8 | 42 | 31.8 | 44 | 10 | 50 | 0.32 | 64 | 1 |
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| 1986 | 16.8 | 77 | 27.5 | 80 | 6.1 | 82 | 0.51 | 38 | 0 |
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| 1985 | 15.6 | 84 | 26.2 | 88 | 5.1 | 88 | 0.20 | 89 | 0 |
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| 1984 | 14.1 | 93 | 23.6 | 97 | 4.8 | 91 | 0.08 | 104 | 2 |
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| 1983 | 26.9 | 11 | 35.9 | 19 | 18.8 | 7 | 0.04 | 108 | 3 |
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| 1982 | 17.6 | 72 | 28.3 | 75 | 6.5 | 80 | 0.44 | 46 | 1 |
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| 1981 | 26.7 | 14 | 36.4 | 15 | 16.9 | 14 | 0.05 | 106 | 0 |
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| 1980 | | | | | 9.3 | 58 | 1.43 | 5 | 4 |
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| 1979 | 5.7 | 104 | 17.1 | 105 | -5.6 | 113 | 0.45 | 44 | 0 |
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| 1978 | 23.9 | 26 | 31.9 | 40 | 15.9 | 16 | 0.60 | 27 | 0 |
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| 1977 | 18.3 | 67 | 29.8 | 64 | 6.8 | 77 | 0.22 | 85 | 0 |
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| 1976 | 20.2 | 51 | 31 | 50 | 10 | 50 | 0.39 | 52 | 1 |
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| 1975 | 19.8 | 57 | 28.9 | 70 | 10.7 | 42 | 0.61 | 24 | 0 |
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| 1974 | 17.5 | 74 | 27.3 | 84 | 7.7 | 67 | 0.57 | 30 | 0 |
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| 1973 | 20 | 54 | 30.2 | 58 | 9.7 | 54 | 0.14 | 100 | 0 |
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| 1972 | 20.6 | 45 | 30.5 | 55 | 10.6 | 45 | 0.47 | 41 | 0 |
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| 1971 | 25.2 | 16 | 34.5 | 28 | 15.8 | 17 | 0.85 | 14 | 0 |
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| 1970 | 26.8 | 12 | 34.9 | 25 | 18.7 | 9 | 0.57 | 30 | 0 |
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| 1969 | 27.6 | 8 | 36.4 | 15 | 18.8 | 7 | 1.68 | 3 | 0 |
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| 1968 | 20.1 | 52 | 30.4 | 56 | 9.8 | 53 | 0.50 | 39 | 0 |
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| 1967 | 28.4 | 4 | 36.8 | 10 | 20.1 | 2 | 0.78 | 18 | 0 |
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| 1966 | 25 | 18 | 34.1 | 30 | 15.8 | 17 | 0.33 | 60 | 0 |
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| 1965 | 22.8 | 32 | 30.2 | 58 | 15.4 | 19 | 1.04 | 8 | 0 |
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| 1964 | 17.9 | 70 | 28.4 | 73 | 7.1 | 72 | | | 3 |
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| 1963 | 18.4 | 65 | 29 | 69 | 7.1 | 72 | 0.32 | 64 | 1 |
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| 1962 | 16 | 82 | 27.4 | 82 | 4.5 | 92 | 0.40 | 51 | 0 |
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| 1961 | 23.6 | 29 | 36.7 | 12 | 10.5 | 47 | 0.00 | 112 | 1 |
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| 1960 | 15.2 | 87 | 25.3 | 93 | 5.1 | 88 | 0.34 | 57 | 0 |
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| 1959 | 23.9 | 26 | 34.2 | 29 | 13.5 | 26 | 0.03 | 110 | 1 |
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| 1958 | 16.4 | 80 | 26.9 | 86 | 5.7 | 83 | 0.52 | 36 | 1 |
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| 1957 | 10.7 | 99 | 21.9 | 100 | -0.5 | 107 | 0.30 | 67 | 0 |
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| 1956 | 19.9 | 56 | 29.8 | 64 | 10.6 | 45 | 0.77 | 20 | 2 |
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| 1955 | 14.2 | 92 | 23.8 | 96 | 4.5 | 92 | 0.47 | 41 | 0 |
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| 1954 | 27.3 | 10 | 37 | 9 | 17.6 | 12 | 0.33 | 60 | 0 |
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| 1953 | 33.9 | 1 | 42.5 | 1 | 25.3 | 1 | 0.83 | 15 | 0 |
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| 1952 | 16 | 82 | 27.4 | 82 | 4.5 | 92 | 0.61 | 24 | 0 |
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| 1951 | 18 | 69 | 29.4 | 67 | 6.6 | 79 | 0.78 | 18 | 0 |
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| 1950 | 20.6 | 45 | 30.2 | 58 | 10.9 | 39 | 0.75 | 21 | 0 |
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| 1949 | 0.6 | 108 | 12.7 | 109 | -11.5 | 117 | 0.43 | 48 | 0 |
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| 1948 | 22.6 | 34 | 33.9 | 31 | 11.3 | 36 | 0.38 | 54 | 0 |
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| 1947 | 14.6 | 90 | 26.1 | 89 | 3 | 100 | 0.39 | 52 | 0 |
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| 1946 | 23 | 31 | 33.2 | 35 | 12.9 | 29 | 0.28 | 71 | 0 |
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| 1945 | 22.7 | 33 | 34.8 | 26 | 10.7 | 42 | 0.17 | 95 | 0 |
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| 1944 | 15.3 | 86 | 27.9 | 77 | 2.6 | 102 | 0.25 | 80 | 0 |
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| 1943 | 17.3 | 76 | 28.4 | 73 | 6.2 | 81 | 2.13 | 1 | 0 |
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| 1942 | 9.8 | 100 | 20.9 | 101 | -1.3 | 110 | 0.64 | 22 | 0 |
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| 1941 | 20.3 | 50 | 32.1 | 39 | 8.6 | 63 | 0.21 | 87 | 0 |
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| 1940 | 21.3 | 38 | 31.9 | 40 | 10.8 | 41 | 0.64 | 22 | 0 |
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| 1939 | 24.9 | 19 | 36.6 | 13 | 13.1 | 28 | 0.35 | 56 | 0 |
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| 1938 | 20.7 | 44 | 31.9 | 40 | 9.5 | 55 | 0.24 | 82 | 0 |
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| 1937 | 3.1 | 106 | 14 | 107 | -7.8 | 115 | 0.08 | 104 | 0 |
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| 1936 | 17.6 | 72 | 28.6 | 72 | 6.7 | 78 | 1.00 | 9 | 0 |
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| 1935 | 23.7 | 28 | 35.3 | 23 | 12.1 | 32 | 0.15 | 99 | 0 |
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| 1934 | 29.9 | 2 | 40 | 2 | 20.1 | 2 | 0.44 | 46 | 1 |
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| 1933 | 20.4 | 48 | 31.6 | 46 | 9.2 | 59 | 0.27 | 75 | 1 |
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| 1932 | | | | | 2.5 | 103 | 0.27 | 75 | 24 |
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| 1931 | 18.2 | 68 | 29.4 | 67 | 7 | 76 | 0.28 | 71 | 0 |
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| 1930 | 5.1 | 105 | 15.9 | 106 | -5.7 | 114 | 0.60 | 27 | 0 |
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| 1929 | 12.6 | 97 | 23.6 | 97 | 1.6 | 105 | 0.54 | 34 | 0 |
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| 1928 | | | 31.4 | 48 | 10.3 | 49 | 0.34 | 57 | 4 |
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| 1927 | 21.9 | 37 | 33 | 36 | 10.7 | 42 | 0.37 | 55 | 0 |
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| 1926 | 15.2 | 87 | 27.1 | 85 | 3.3 | 98 | | | 0 |
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| 1925 | 21.1 | 40 | 31 | 50 | 11.3 | 36 | | | 0 |
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| 1924 | 14 | 94 | 25.8 | 91 | 2.4 | 104 | 0.04 | 108 | 3 |
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| 1923 | 23.1 | 30 | 33.7 | 33 | 12.6 | 30 | 0.41 | 50 | 0 |
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| 1922 | 7.6 | 103 | 18.7 | 104 | -3.5 | 111 | 0.61 | 24 | 0 |
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| 1921 | 22.5 | 35 | 31.9 | 40 | 13.2 | 27 | 0.27 | 75 | 1 |
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| 1920 | 20.1 | 52 | 30.7 | 52 | 9.4 | 56 | | | 0 |
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| 1919 | 22.4 | 36 | 36.1 | 18 | 8.7 | 62 | 0.05 | 106 | 0 |
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| 1918 | 24.6 | 21 | 34.8 | 26 | 14.4 | 22 | 0.43 | 48 | 0 |
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| 1917 | 16.1 | 81 | 26.8 | 87 | 5.4 | 84 | 0.22 | 85 | 0 |
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| 1916 | 9.3 | 102 | 20.1 | 103 | -0.7 | 108 | 1.27 | 6 | 1 |
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| 1915 | 12 | 98 | 28.7 | 71 | -4.7 | 112 | 1.91 | 2 | 0 |
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| 1914 | 20 | 54 | 35.5 | 21 | 5.2 | 86 | 0.79 | 17 | 3 |
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| 1902 | 20.4 | 48 | 35 | 24 | 5.2 | 86 | 0.50 | 39 | 1 |
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| 1901 | 24.7 | 20 | 38.9 | 3 | 10.5 | 47 | 1.18 | 7 | 0 |
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| 1900 | 24.3 | 23 | 37.8 | 6 | 10.9 | 39 | 0.30 | 67 | 0 |
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| 1898 | 19.7 | 58 | 35.7 | 20 | 3.7 | 97 | 0.90 | 11 | 0 |
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| 1896 | 27.5 | 9 | 36.8 | 10 | 18.1 | 10 | 0.81 | 16 | 1 |
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| 1895 | 16.8 | 77 | 30.4 | 56 | 4.2 | 96 | 0.30 | 67 | 2 |
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