Every January in Mansfield, OH from 1900 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 | 20.1 | 92 | 27.5 | 91 | 12.6 | 92 | 1.80 | 71 | 0 |
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| 2025 | 20.8 | 88 | 27.5 | 91 | 14.1 | 82 | 1.11 | 106 | 1 |
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| 2024 | 28.5 | 34 | 33.7 | 52 | 23.3 | 22 | 3.80 | 21 | 0 |
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| 2023 | 34.7 | 6 | 40.4 | 12 | 29 | 3 | 4.89 | 16 | 0 |
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| 2022 | 22 | 81 | 30.2 | 79 | 13.9 | 85 | 2.00 | 68 | 0 |
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| 2021 | 30.2 | 24 | 34.9 | 42 | 25.5 | 14 | 1.79 | 72 | 0 |
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| 2020 | 35.1 | 5 | 41.4 | 7 | 28.9 | 4 | 3.80 | 21 | 0 |
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| 2019 | 24.7 | 67 | 32.5 | 68 | 17 | 67 | 3.00 | 39 | 0 |
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| 2018 | 24.8 | 65 | 32.7 | 64 | 16.9 | 68 | 2.51 | 54 | 0 |
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| 2017 | 32.7 | 13 | 39.5 | 16 | 26 | 11 | 5.91 | 7 | 0 |
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| 2016 | 26.3 | 51 | 34.7 | 44 | 17.9 | 61 | 1.54 | 85 | 0 |
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| 2015 | 22.2 | 79 | 30.4 | 78 | 14.1 | 82 | 3.46 | 30 | 0 |
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| 2014 | 18.8 | 95 | 28 | 86 | 9.6 | 100 | 2.02 | 67 | 0 |
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| 2013 | 28.9 | 32 | 36.6 | 29 | 21.2 | 38 | 2.58 | 51 | 0 |
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| 2012 | 30.3 | 23 | 38.1 | 19 | 22.6 | 30 | 3.62 | 27 | 0 |
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| 2011 | 20.9 | 86 | 27.5 | 91 | 14.4 | 81 | 1.70 | 75 | 0 |
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| 2010 | 23.4 | 74 | 28.7 | 85 | 18 | 59 | 1.62 | 79 | 0 |
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| 2009 | 17.5 | 103 | 25.6 | 100 | 9.3 | 103 | 2.83 | 45 | 0 |
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| 2008 | 28 | 37 | 35.9 | 35 | 20.1 | 42 | 2.84 | 44 | 0 |
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| 2007 | 30.2 | 24 | 36.7 | 28 | 23.6 | 20 | 5.21 | 12 | 0 |
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| 2006 | 37.1 | 1 | 44.1 | 2 | 30.1 | 2 | 2.74 | 47 | 0 |
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| 2005 | 25.5 | 61 | 33.1 | 60 | 18 | 59 | 6.08 | 5 | 0 |
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| 2004 | 20.1 | 92 | 27.7 | 90 | 12.5 | 94 | 3.78 | 23 | 0 |
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| 2003 | 18.7 | 96 | 25 | 103 | 12.4 | 95 | 1.32 | 96 | 0 |
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| 2002 | 33.1 | 12 | 39.9 | 14 | 26.2 | 10 | 2.15 | 63 | 0 |
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| 2001 | 26.4 | 48 | 32.3 | 69 | 20.5 | 41 | 1.23 | 102 | 0 |
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| 2000 | 23.9 | 71 | 32.2 | 70 | 15.6 | 72 | 3.03 | 37 | 0 |
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| 1999 | 26.4 | 48 | 34.9 | 42 | 17.9 | 61 | 3.73 | 26 | 0 |
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| 1998 | 33.5 | 10 | 39.8 | 15 | 27.2 | 7 | 2.96 | 40 | 0 |
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| 1997 | 23.9 | 71 | 32.8 | 63 | 15 | 76 | 1.78 | 74 | 0 |
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| 1996 | 24.7 | 67 | 32.6 | 66 | 16.8 | 69 | 5.05 | 14 | 0 |
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| 1995 | 27.3 | 44 | 34 | 50 | 20.6 | 40 | 5.69 | 8 | 0 |
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| 1994 | 17.8 | 100 | 24.9 | 104 | 10.7 | 99 | 2.52 | 53 | 0 |
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| 1993 | 30.6 | 21 | 36.8 | 27 | 24.3 | 17 | 5.54 | 9 | 0 |
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| 1992 | 28.2 | 35 | 34.6 | 45 | 21.8 | 32 | 3.59 | 28 | 0 |
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| 1991 | 26.2 | 53 | 33.2 | 58 | 19.2 | 46 | 2.65 | 49 | 0 |
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| 1990 | 34.4 | 8 | 41.4 | 7 | 27.5 | 6 | 2.39 | 58 | 0 |
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| 1989 | 34.5 | 7 | 42.7 | 6 | 26.3 | 9 | 2.82 | 46 | 0 |
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| 1988 | 23.9 | 71 | 32.1 | 71 | 15.7 | 71 | 2.04 | 65 | 0 |
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| 1987 | 26.2 | 53 | 31.6 | 73 | 20.8 | 39 | 1.35 | 95 | 0 |
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| 1986 | 26.3 | 51 | 33.3 | 57 | 19.4 | 45 | 1.62 | 79 | 0 |
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| 1985 | 20.9 | 86 | 27.1 | 95 | 14.8 | 79 | 1.49 | 88 | 0 |
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| 1984 | 20.2 | 91 | 26.5 | 96 | 13.9 | 85 | 1.22 | 103 | 0 |
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| 1983 | 29.1 | 31 | 35.2 | 41 | 23.1 | 28 | 1.67 | 77 | 0 |
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| 1982 | 18.6 | 97 | 28 | 86 | 9.1 | 104 | 4.53 | 17 | 0 |
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| 1981 | 22.2 | 79 | 29 | 82 | 15.5 | 73 | 0.41 | 115 | 0 |
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| 1980 | 25.6 | 60 | 32.6 | 66 | 18.7 | 50 | 1.30 | 98 | 0 |
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| 1979 | 18.6 | 97 | 25.7 | 99 | 11.5 | 96 | 3.29 | 32 | 0 |
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| 1978 | 18.3 | 99 | 25.2 | 102 | 11.4 | 97 | 3.76 | 24 | 0 |
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| 1977 | 8.7 | 106 | 16.6 | 106 | 0.7 | 107 | 0.79 | 110 | 0 |
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| 1976 | 20.8 | 88 | 28.9 | 83 | 12.6 | 92 | 2.69 | 48 | 0 |
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| 1975 | 29.8 | 27 | 36.3 | 33 | 23.3 | 22 | 3.33 | 31 | 0 |
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| 1974 | 31.9 | 16 | 40.6 | 10 | 23.3 | 22 | 3.59 | 28 | 0 |
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| 1973 | 30 | 26 | 38.1 | 19 | 21.8 | 32 | 1.83 | 70 | 0 |
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| 1972 | 27.9 | 39 | 37.3 | 25 | 18.5 | 54 | 0.95 | 108 | 0 |
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| 1971 | 22.4 | 78 | 31.2 | 76 | 13.5 | 87 | 1.40 | 92 | 0 |
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| 1970 | 20 | 94 | 27.4 | 94 | 12.7 | 90 | 1.02 | 107 | 0 |
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| 1969 | 26.2 | 53 | 33.8 | 51 | 18.5 | 54 | 2.41 | 56 | 0 |
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| 1968 | 22.7 | 77 | 30.2 | 79 | 15.3 | 75 | 2.27 | 60 | 0 |
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| 1967 | 30.6 | 21 | 37.9 | 22 | 23.4 | 21 | 0.74 | 112 | 0 |
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| 1966 | 20.3 | 90 | 27.9 | 88 | 12.7 | 90 | 1.55 | 84 | 0 |
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| 1965 | 25.8 | 58 | 33.7 | 52 | 17.9 | 61 | 3.01 | 38 | 0 |
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| 1964 | 28.9 | 32 | 36.4 | 30 | 21.4 | 36 | 1.45 | 90 | 0 |
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| 1963 | 17.8 | 100 | 26.1 | 98 | 9.4 | 102 | 0.91 | 109 | 0 |
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| 1962 | 23.4 | 74 | 31.3 | 75 | 15.4 | 74 | 2.93 | 42 | 0 |
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| 1961 | 21 | 85 | 27.8 | 89 | 14.1 | 82 | 0.65 | 114 | 0 |
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| 1960 | 29.2 | 30 | 35.5 | 38 | 22.9 | 29 | 2.54 | 52 | 0 |
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| 1959 | 21.9 | 82 | 32.7 | 64 | 11.2 | 98 | 6.79 | 4 | 1 |
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| 1958 | 24.9 | 64 | 33.2 | 58 | 16.5 | 70 | 1.52 | 86 | 0 |
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| 1957 | 21.1 | 84 | 29.2 | 81 | 13 | 89 | 1.79 | 72 | 0 |
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| 1956 | 24.8 | 65 | 31 | 77 | 18.6 | 52 | 1.63 | 78 | 0 |
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| 1955 | 25.3 | 62 | 31.4 | 74 | 19.1 | 48 | 2.03 | 66 | 0 |
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| 1954 | 27.7 | 40 | 35.3 | 40 | 20.1 | 42 | 2.29 | 59 | 0 |
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| 1953 | 31.5 | 18 | 38.1 | 19 | 24.9 | 15 | 2.94 | 41 | 0 |
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| 1952 | 30.8 | 19 | 37.9 | 22 | 23.7 | 19 | 4.97 | 15 | 0 |
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| 1951 | 28 | 37 | 34.3 | 48 | 21.6 | 34 | 3.28 | 33 | 0 |
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| 1950 | 35.5 | 3 | 44.3 | 1 | 26.7 | 8 | 11.47 | 1 | 0 |
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| 1949 | 33.2 | 11 | 40.9 | 9 | 25.6 | 12 | 4.36 | 19 | 0 |
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| 1948 | | | | | | | 1.16 | 105 | 31 |
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| 1947 | | | | | | | 4.26 | 20 | 6 |
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| 1946 | 28.1 | 36 | 37.8 | 24 | 18.4 | 56 | 0.75 | 111 | 0 |
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| 1945 | 17.6 | 102 | 25.6 | 100 | 9.5 | 101 | 1.24 | 101 | 0 |
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| 1944 | 32 | 14 | 39 | 17 | 24.4 | 16 | 0.73 | 113 | 2 |
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| 1943 | 27.7 | 40 | 35.5 | 38 | 19.8 | 44 | 1.56 | 83 | 0 |
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| 1942 | 27.2 | 46 | 35.6 | 37 | 18.8 | 49 | 1.40 | 92 | 0 |
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| 1941 | 27.3 | 44 | 32.9 | 61 | 21.6 | 34 | 1.57 | 82 | 0 |
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| 1940 | 13.1 | 105 | 21.9 | 105 | 4.4 | 106 | 1.30 | 98 | 0 |
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| 1939 | | | | | 21.4 | 36 | | | 5 |
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| 1938 | 27.5 | 43 | 36.4 | 30 | 18.6 | 52 | 1.91 | 69 | 0 |
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| 1937 | 34.4 | 8 | 43.1 | 3 | 25.6 | 12 | 9.58 | 2 | 0 |
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| 1936 | 21.2 | 83 | 28.8 | 84 | 13.5 | 87 | 1.21 | 104 | 0 |
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| 1935 | 26.1 | 56 | 32.9 | 61 | 19.2 | 46 | | | 3 |
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| 1934 | 30.8 | 19 | 38.4 | 18 | 23.2 | 25 | 1.48 | 89 | 0 |
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| 1933 | 35.4 | 4 | 43.1 | 3 | 27.9 | 5 | 1.45 | 90 | 1 |
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| 1932 | 36.7 | 2 | 43 | 5 | 30.3 | 1 | 5.30 | 11 | 0 |
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| 1931 | 29.7 | 28 | 37.3 | 25 | 22.2 | 31 | 1.39 | 94 | 0 |
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| 1930 | 25.8 | 58 | 34.5 | 46 | 17.1 | 66 | 6.08 | 5 | 0 |
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| 1929 | 24.5 | 70 | 33.7 | 52 | 15 | 76 | 5.19 | 13 | 1 |
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| 1928 | 27.6 | 42 | 36.4 | 30 | 18.1 | 58 | 2.25 | 61 | 1 |
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| 1927 | 26 | 57 | 33.4 | 56 | 18.7 | 50 | 2.63 | 50 | 0 |
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| 1926 | 25.1 | 63 | 33.5 | 55 | 17.2 | 65 | 2.25 | 61 | 1 |
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| 1925 | 26.4 | 48 | 34.4 | 47 | 17.9 | 61 | 1.69 | 76 | 2 |
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| 1924 | 23.3 | 76 | 32 | 72 | 14.6 | 80 | 3.74 | 25 | 0 |
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| 1923 | 29.6 | 29 | 36.1 | 34 | 23.2 | 25 | 4.47 | 18 | 0 |
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| 1922 | 24.6 | 69 | 34.3 | 48 | 15 | 76 | 1.30 | 98 | 0 |
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| 1921 | 32 | 14 | 40.2 | 13 | 23.8 | 18 | 2.48 | 55 | 0 |
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| 1919 | 31.9 | 16 | 40.5 | 11 | 23.2 | 25 | 1.31 | 97 | 0 |
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| 1918 | 15.4 | 104 | 26.2 | 97 | 4.6 | 105 | 3.07 | 36 | 0 |
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| 1917 | 27 | 47 | 35.8 | 36 | 18.2 | 57 | 3.08 | 35 | 0 |
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| 1907 | | | | | | | 7.75 | 3 | 31 |
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| 1906 | | | | | | | 2.10 | 64 | 31 |
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| 1905 | | | | | | | 1.60 | 81 | 31 |
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| 1904 | | | | | | | 5.35 | 10 | 31 |
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| 1903 | | | | | | | 2.41 | 56 | 31 |
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| 1902 | | | | | | | 1.52 | 86 | 31 |
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| 1901 | | | | | | | 3.20 | 34 | 31 |
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| 1900 | | | | | | | 2.89 | 43 | 31 |
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