Every September in Mansfield, OH from 1899 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 | 67 | 19 | 76.4 | 33 | 57.6 | 8 | 3.69 | 47 | 0 |
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| 2025 | 65.8 | 33 | 78.5 | 14 | 53.1 | 57 | 2.01 | 90 | 0 |
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| 2024 | 68.2 | 7 | 79.3 | 9 | 57 | 14 | 2.64 | 66 | 0 |
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| 2023 | 65 | 41 | 74.4 | 57 | 55.6 | 25 | 0.59 | 116 | 0 |
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| 2022 | 64.3 | 48 | 73.1 | 71 | 55.5 | 26 | 5.65 | 12 | 0 |
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| 2021 | 67.1 | 17 | 77.5 | 24 | 56.7 | 17 | 3.03 | 56 | 0 |
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| 2020 | 64.3 | 48 | 74.7 | 51 | 53.9 | 49 | 5.70 | 11 | 0 |
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| 2019 | 70.1 | 1 | 80.8 | 4 | 59.3 | 3 | 3.79 | 37 | 0 |
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| 2018 | 69.1 | 3 | 78 | 18 | 60.3 | 1 | 4.54 | 26 | 0 |
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| 2017 | 65.5 | 37 | 76.3 | 34 | 54.6 | 38 | 1.60 | 98 | 0 |
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| 2016 | 68.5 | 5 | 79.3 | 9 | 57.6 | 8 | 3.71 | 45 | 0 |
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| 2015 | 68.1 | 8 | 79.2 | 11 | 57 | 14 | 2.53 | 72 | 0 |
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| 2014 | 63.2 | 62 | 74.5 | 55 | 51.8 | 75 | 1.47 | 102 | 0 |
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| 2013 | 63.4 | 58 | 74.2 | 61 | 52.6 | 64 | 2.73 | 64 | 0 |
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| 2012 | 62.2 | 75 | 72.8 | 74 | 51.6 | 78 | 6.71 | 5 | 0 |
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| 2011 | 63.4 | 58 | 71.8 | 83 | 55 | 32 | 5.13 | 18 | 0 |
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| 2010 | 64.3 | 48 | 75.7 | 41 | 52.9 | 61 | 2.29 | 81 | 0 |
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| 2009 | 63 | 64 | 72.7 | 75 | 53.3 | 53 | 2.36 | 79 | 0 |
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| 2008 | 65.5 | 37 | 76.7 | 32 | 54.3 | 40 | 4.29 | 30 | 0 |
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| 2007 | 66.2 | 26 | 77.6 | 21 | 54.7 | 35 | 3.73 | 43 | 0 |
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| 2006 | 60.8 | 95 | 69.8 | 98 | 51.8 | 75 | 2.62 | 68 | 0 |
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| 2005 | 66.3 | 24 | 77.3 | 25 | 55.3 | 27 | 2.87 | 58 | 0 |
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| 2004 | 64.5 | 47 | 74.7 | 51 | 54.3 | 40 | 2.92 | 57 | 0 |
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| 2003 | 61 | 90 | 70.9 | 91 | 51.2 | 83 | 6.54 | 7 | 0 |
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| 2002 | 67 | 19 | 78.9 | 12 | 55.1 | 30 | 2.86 | 60 | 0 |
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| 2001 | 60.7 | 96 | 70.9 | 91 | 50.5 | 87 | 2.46 | 74 | 0 |
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| 2000 | 61.9 | 79 | 71.7 | 84 | 52.2 | 70 | 2.55 | 71 | 0 |
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| 1999 | 63.1 | 63 | 76 | 39 | 50.3 | 91 | 1.62 | 96 | 0 |
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| 1998 | 66 | 30 | 77.2 | 28 | 54.8 | 33 | 0.70 | 113 | 0 |
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| 1997 | 61.6 | 81 | 71.6 | 86 | 51.5 | 80 | 3.06 | 54 | 0 |
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| 1996 | 62.2 | 75 | 71 | 90 | 53.3 | 53 | 6.25 | 8 | 0 |
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| 1995 | 61.6 | 81 | 72.5 | 78 | 50.7 | 84 | 1.19 | 105 | 0 |
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| 1994 | 62.7 | 71 | 73.2 | 69 | 52.3 | 67 | 1.99 | 92 | 0 |
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| 1993 | 61 | 90 | 70.2 | 95 | 51.8 | 75 | 5.50 | 15 | 0 |
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| 1992 | 61.5 | 83 | 71.6 | 86 | 51.4 | 81 | 4.07 | 35 | 0 |
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| 1991 | 63.4 | 58 | 74.7 | 51 | 52.1 | 72 | 3.09 | 53 | 0 |
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| 1990 | 62.8 | 68 | 72 | 82 | 53.7 | 52 | 4.94 | 20 | 0 |
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| 1989 | 62.7 | 71 | 72.3 | 79 | 53 | 59 | 3.10 | 52 | 0 |
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| 1988 | 62.9 | 66 | 72.7 | 75 | 53 | 59 | 2.60 | 69 | 0 |
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| 1987 | 63.7 | 53 | 73 | 73 | 54.3 | 40 | 0.81 | 111 | 0 |
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| 1986 | 66.2 | 26 | 75.7 | 41 | 56.7 | 17 | 7.76 | 3 | 0 |
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| 1985 | 64.8 | 43 | 75 | 48 | 54.5 | 39 | 1.63 | 95 | 0 |
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| 1984 | 61 | 90 | 69.6 | 100 | 52.4 | 65 | 3.78 | 40 | 0 |
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| 1983 | 65.4 | 39 | 75.5 | 44 | 55.2 | 28 | 5.16 | 16 | 0 |
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| 1982 | 60.9 | 93 | 69.5 | 102 | 52.3 | 67 | 2.52 | 73 | 0 |
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| 1981 | 62.8 | 68 | 70.8 | 93 | 54.7 | 35 | 4.41 | 28 | 0 |
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| 1980 | 65.2 | 40 | 75.6 | 43 | 54.8 | 33 | 2.45 | 76 | 0 |
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| 1979 | 62.8 | 68 | 72.3 | 79 | 53.3 | 53 | 5.64 | 13 | 0 |
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| 1978 | 68.5 | 5 | 79.8 | 8 | 57.2 | 11 | 1.10 | 109 | 0 |
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| 1977 | 65.8 | 33 | 74.3 | 59 | 57.3 | 10 | 4.56 | 24 | 0 |
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| 1976 | 59.2 | 101 | 69.6 | 100 | 48.8 | 97 | 3.61 | 48 | 0 |
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| 1975 | 58.7 | 103 | 66.7 | 106 | 50.6 | 85 | 4.97 | 19 | 0 |
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| 1974 | 59.9 | 99 | 69.3 | 103 | 50.4 | 89 | 3.41 | 49 | 0 |
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| 1973 | 67.4 | 15 | 78.1 | 16 | 56.6 | 19 | 1.38 | 103 | 0 |
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| 1972 | 65.7 | 35 | 74.3 | 59 | 57.1 | 12 | 6.85 | 4 | 0 |
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| 1971 | 67.8 | 12 | 77 | 30 | 58.6 | 4 | 2.41 | 77 | 0 |
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| 1970 | 69.1 | 3 | 80 | 7 | 58.1 | 7 | 4.65 | 21 | 0 |
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| 1969 | 64.8 | 43 | 73.9 | 64 | 55.7 | 24 | 2.70 | 65 | 0 |
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| 1968 | 66.4 | 23 | 76.3 | 34 | 56.5 | 20 | 2.26 | 83 | 0 |
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| 1967 | 60.1 | 97 | 71.4 | 89 | 48.7 | 98 | 4.61 | 23 | 0 |
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| 1966 | 59.7 | 100 | 69.7 | 99 | 49.7 | 93 | 1.95 | 93 | 0 |
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| 1965 | 63.9 | 52 | 73.5 | 67 | 54.3 | 40 | 2.11 | 87 | 0 |
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| 1964 | 63.6 | 56 | 74.9 | 49 | 52.3 | 67 | 1.13 | 107 | 0 |
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| 1963 | 61.2 | 87 | 74 | 63 | 48.5 | 99 | 0.73 | 112 | 0 |
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| 1962 | 60.1 | 97 | 70 | 97 | 50.2 | 92 | 3.79 | 37 | 0 |
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| 1961 | 68 | 11 | 77.7 | 20 | 58.4 | 6 | 4.49 | 27 | 0 |
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| 1960 | 66.1 | 28 | 75.9 | 40 | 56.3 | 21 | 1.12 | 108 | 0 |
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| 1959 | 65.6 | 36 | 77.3 | 25 | 53.9 | 49 | 2.87 | 58 | 0 |
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| 1958 | 61.5 | 83 | 71.7 | 84 | 51.3 | 82 | 3.04 | 55 | 0 |
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| 1957 | 61.3 | 85 | 73.4 | 68 | 49.2 | 95 | 9.07 | 1 | 0 |
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| 1956 | 57.7 | 105 | 70.8 | 93 | 44.6 | 107 | 1.52 | 101 | 0 |
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| 1955 | 65.9 | 31 | 77.1 | 29 | 54.7 | 35 | 2.07 | 88 | 0 |
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| 1954 | 66.1 | 28 | 76.3 | 34 | 55.9 | 22 | 0.97 | 110 | 0 |
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| 1953 | 63.7 | 53 | 75.2 | 47 | 52.2 | 70 | 1.16 | 106 | 0 |
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| 1952 | 63.3 | 61 | 74.5 | 55 | 52.1 | 72 | 4.33 | 29 | 0 |
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| 1951 | 61.3 | 85 | 72.2 | 81 | 50.4 | 89 | 3.74 | 42 | 0 |
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| 1950 | 61.7 | 80 | 70.2 | 95 | 53.1 | 57 | 4.14 | 32 | 0 |
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| 1949 | 57.3 | 106 | 67.3 | 105 | 47.3 | 103 | 2.35 | 80 | 0 |
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| 1948 | | | | | | | 2.76 | 63 | 30 |
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| 1947 | 62.6 | 73 | 74.8 | 50 | 50.5 | 87 | 2.63 | 67 | 0 |
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| 1946 | 62.1 | 77 | 77.3 | 25 | 47.2 | 104 | 1.53 | 99 | 1 |
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| 1945 | 64.9 | 42 | 75.5 | 44 | 54.2 | 45 | 4.63 | 22 | 0 |
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| 1944 | 62 | 78 | 74.4 | 57 | 49.6 | 94 | 5.16 | 16 | 0 |
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| 1943 | 61.1 | 89 | 73.8 | 66 | 48.3 | 100 | 2.78 | 62 | 0 |
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| 1942 | 63 | 64 | 75.4 | 46 | 50.6 | 85 | 4.01 | 36 | 0 |
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| 1941 | 67 | 19 | 81.2 | 1 | 52.9 | 61 | 1.86 | 94 | 0 |
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| 1940 | 58.7 | 103 | 72.6 | 77 | 44.7 | 106 | 1.21 | 104 | 0 |
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| 1939 | 67.5 | 14 | 81.1 | 2 | 53.9 | 49 | 3.30 | 50 | 0 |
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| 1938 | 64.8 | 43 | 77.6 | 21 | 51.6 | 78 | 2.29 | 81 | 2 |
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| 1937 | 60.9 | 93 | 76.1 | 38 | 45.7 | 105 | 2.01 | 90 | 0 |
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| 1936 | 68.1 | 8 | 81 | 3 | 55.2 | 28 | 2.80 | 61 | 0 |
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| 1935 | 62.4 | 74 | 73.2 | 69 | 51.9 | 74 | 2.23 | 85 | 1 |
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| 1934 | 66.3 | 24 | 78.4 | 15 | 54.2 | 45 | 2.57 | 70 | 0 |
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| 1933 | 67.4 | 15 | 77.6 | 21 | 57.1 | 12 | 6.61 | 6 | 0 |
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| 1932 | 63.5 | 57 | 74.6 | 54 | 52.4 | 65 | 3.12 | 51 | 0 |
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| 1931 | 69.5 | 2 | 80.3 | 6 | 58.6 | 4 | 4.09 | 34 | 0 |
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| 1930 | 66.9 | 22 | 78.8 | 13 | 55.1 | 30 | 3.73 | 43 | 0 |
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| 1929 | 64.7 | 46 | 76.3 | 34 | 52.9 | 61 | 2.46 | 74 | 1 |
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| 1928 | 61.2 | 87 | 74.2 | 61 | 48.3 | 100 | 0.69 | 114 | 0 |
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| 1927 | 67.1 | 17 | 80.4 | 5 | 54.1 | 48 | 3.76 | 41 | 1 |
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| 1926 | 64.3 | 48 | 73.1 | 71 | 55.8 | 23 | 8.37 | 2 | 1 |
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| 1925 | 67.7 | 13 | 78.1 | 16 | 57 | 14 | 5.92 | 10 | 1 |
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| 1923 | 62.9 | 66 | 71.5 | 88 | 54.2 | 45 | 2.03 | 89 | 0 |
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| 1922 | 65.9 | 31 | 78 | 18 | 54.3 | 40 | 0.69 | 114 | 1 |
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| 1921 | 68.1 | 8 | 76.8 | 31 | 59.4 | 2 | 3.79 | 37 | 0 |
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| 1919 | 63.7 | 53 | 73.9 | 64 | 53.3 | 53 | 2.41 | 77 | 1 |
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| 1918 | 56.7 | 107 | 66.1 | 107 | 47.4 | 102 | 4.10 | 33 | 0 |
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| 1917 | 59.1 | 102 | 69.2 | 104 | 49 | 96 | 1.62 | 96 | 0 |
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| 1906 | | | | | | | 6.00 | 9 | 30 |
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| 1905 | | | | | | | 4.20 | 31 | 30 |
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| 1904 | | | | | | | 1.53 | 99 | 30 |
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| 1903 | | | | | | | 2.25 | 84 | 30 |
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| 1902 | | | | | | | 3.70 | 46 | 30 |
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| 1901 | | | | | | | 5.60 | 14 | 30 |
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| 1900 | | | | | | | 2.23 | 85 | 30 |
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| 1899 | | | | | | | 4.55 | 25 | 30 |
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