Every 1 September to 9 October in Cedar Rapids, IA 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 | 66.7 | 8 | 75.5 | 43 | 57.9 | 2 | 12.48 | 3 | 0 |
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| 2025 | | | | | | | | | 10 |
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| 2024 | 65.5 | 23 | 79.6 | 8 | 51.5 | 63 | 0.05 | 130 | 0 |
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| 2023 | 66.7 | 8 | 79 | 14 | 54.5 | 19 | 1.10 | 123 | 0 |
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| 2022 | 62.9 | 58 | 75.6 | 41 | 50.3 | 79 | 1.70 | 117 | 0 |
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| 2021 | 66.6 | 11 | 79.3 | 10 | 53.9 | 21 | 2.20 | 104 | 0 |
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| 2020 | 59.5 | 112 | 71.1 | 110 | 47.9 | 114 | 5.59 | 30 | 0 |
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| 2019 | 65.6 | 21 | 75.1 | 48 | 56.1 | 5 | 8.59 | 13 | 0 |
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| 2018 | 64.3 | 36 | 73.9 | 62 | 54.6 | 17 | 9.92 | 8 | 0 |
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| 2017 | 66.5 | 13 | 79.3 | 10 | 53.6 | 27 | 2.27 | 101 | 0 |
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| 2016 | 66.3 | 14 | 76.6 | 28 | 56 | 6 | 7.13 | 23 | 0 |
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| 2015 | | | 76.3 | 32 | | | 5.04 | 43 | 4 |
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| 2014 | 59.5 | 112 | 70.6 | 120 | 48.3 | 109 | 3.87 | 60 | 0 |
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| 2013 | 65.8 | 18 | 78.6 | 16 | 53.1 | 35 | 4.30 | 54 | 0 |
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| 2012 | 57.2 | 127 | 70.6 | 120 | 43.8 | 131 | 1.74 | 115 | 0 |
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| 2011 | 60.4 | 94 | 72.2 | 89 | 48.5 | 105 | 1.92 | 110 | 0 |
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| 2010 | 61.4 | 82 | 73.6 | 67 | 49.2 | 97 | 5.17 | 41 | 0 |
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| 2009 | 59.5 | 112 | 69.8 | 124 | 49.3 | 95 | 3.78 | 62 | 0 |
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| 2008 | 60.8 | 90 | 71.4 | 106 | 50.2 | 80 | 5.20 | 40 | 0 |
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| 2007 | 65.1 | 29 | 77.3 | 21 | 52.8 | 43 | 4.11 | 58 | 0 |
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| 2006 | 60.4 | 94 | 71.6 | 99 | 49.1 | 98 | 2.81 | 89 | 0 |
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| 2005 | 65.1 | 29 | 77.3 | 21 | 52.9 | 39 | 3.41 | 72 | 0 |
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| 2004 | 62.4 | 66 | 75.5 | 43 | 49.4 | 93 | 1.76 | 113 | 0 |
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| 2003 | 59.5 | 112 | 72.8 | 79 | 46.1 | 125 | 3.75 | 64 | 0 |
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| 2002 | 63.4 | 48 | 75.4 | 46 | 51.4 | 64 | 6.84 | 25 | 0 |
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| 2001 | 58.5 | 123 | 69.9 | 122 | 47.1 | 117 | 3.65 | 66 | 0 |
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| 2000 | 60.4 | 94 | 72.2 | 89 | 48.5 | 105 | 4.95 | 45 | 0 |
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| 1999 | 58.6 | 122 | 71.8 | 96 | 45.3 | 127 | 1.69 | 118 | 0 |
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| 1998 | 63.2 | 53 | 73.5 | 69 | 52.9 | 39 | 6.25 | 28 | 0 |
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| 1997 | 66 | 16 | 77.3 | 21 | 54.6 | 17 | 2.52 | 96 | 0 |
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| 1996 | 59.7 | 108 | 70.7 | 118 | 48.7 | 103 | 3.31 | 75 | 0 |
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| 1995 | 61.3 | 83 | 73.5 | 69 | 49.1 | 98 | 3.38 | 73 | 0 |
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| 1994 | 64.5 | 34 | 75.5 | 43 | 53.6 | 27 | 2.57 | 93 | 0 |
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| 1993 | 57.4 | 126 | 67.8 | 130 | 47 | 118 | 4.44 | 51 | 0 |
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| 1992 | 60.4 | 94 | 71.6 | 99 | 49.3 | 95 | 5.26 | 39 | 0 |
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| 1991 | 60.5 | 93 | 72.8 | 79 | 48.2 | 111 | 3.44 | 70 | 0 |
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| 1990 | 63.9 | 42 | 74.9 | 52 | 52.9 | 39 | 2.22 | 103 | 0 |
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| 1989 | 58.1 | 124 | 69.9 | 122 | 46.2 | 122 | 4.82 | 46 | 0 |
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| 1988 | 61.6 | 77 | 73.5 | 69 | 49.6 | 92 | 2.54 | 95 | 0 |
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| 1987 | 59.5 | 112 | 70.8 | 115 | 48.1 | 112 | 1.95 | 108 | 0 |
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| 1986 | 62.5 | 64 | 71.5 | 103 | 53.5 | 31 | 7.41 | 18 | 0 |
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| 1985 | 60.9 | 89 | 70.8 | 115 | 50.9 | 70 | 5.47 | 33 | 0 |
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| 1984 | 61.2 | 84 | 72.5 | 85 | 49.8 | 88 | 2.56 | 94 | 0 |
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| 1983 | 63.4 | 48 | 75.8 | 36 | 51 | 69 | 2.74 | 90 | 0 |
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| 1982 | 62.1 | 73 | 72.4 | 87 | 51.7 | 54 | 5.37 | 36 | 0 |
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| 1981 | 59.9 | 106 | 71.6 | 99 | 48.3 | 109 | 5.04 | 43 | 0 |
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| 1980 | 62.2 | 70 | 74.3 | 57 | 50.2 | 80 | 5.10 | 42 | 0 |
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| 1979 | 62.2 | 70 | 74.3 | 57 | 50.2 | 80 | 0.39 | 128 | 0 |
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| 1978 | 63.4 | 48 | 74.3 | 57 | 52.4 | 46 | 5.58 | 31 | 0 |
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| 1977 | 59.9 | 106 | 68.4 | 128 | 51.3 | 66 | 5.58 | 31 | 0 |
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| 1976 | 59.3 | 117 | 72.5 | 85 | 46 | 126 | 1.38 | 121 | 0 |
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| 1975 | 57.9 | 125 | 69.6 | 125 | 46.2 | 122 | 2.88 | 87 | 0 |
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| 1974 | 55.8 | 129 | 67.6 | 131 | 44 | 130 | 2.01 | 106 | 0 |
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| 1973 | 62.9 | 58 | 71.1 | 110 | 54.7 | 14 | 10.04 | 7 | 0 |
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| 1972 | 63.7 | 44 | 73.7 | 65 | 53.7 | 26 | 4.12 | 57 | 0 |
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| 1971 | 65.4 | 25 | 76.9 | 26 | 53.9 | 21 | 3.17 | 80 | 0 |
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| 1970 | 63.5 | 47 | 74.1 | 61 | 52.8 | 43 | 8.05 | 14 | 0 |
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| 1969 | 64.1 | 37 | 74.8 | 54 | 53.4 | 32 | 2.92 | 86 | 0 |
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| 1968 | 60 | 105 | 71.2 | 109 | 48.8 | 100 | 6.31 | 27 | 0 |
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| 1967 | 61.5 | 80 | 72.4 | 87 | 50.5 | 75 | 9.00 | 9 | 0 |
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| 1966 | 59.6 | 110 | 72.2 | 89 | 47 | 118 | 1.77 | 112 | 0 |
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| 1965 | 60.4 | 94 | 69.4 | 126 | 51.4 | 64 | 10.60 | 4 | 0 |
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| 1964 | 61.2 | 84 | 72 | 93 | 50.5 | 75 | 2.86 | 88 | 0 |
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| 1963 | 64.6 | 32 | 76.8 | 27 | 52.4 | 46 | 2.41 | 98 | 0 |
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| 1962 | 61.6 | 77 | 71.5 | 103 | 51.6 | 59 | 3.47 | 69 | 0 |
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| 1961 | 62.9 | 58 | 73.5 | 69 | 52.4 | 46 | 7.98 | 16 | 0 |
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| 1960 | 63.3 | 51 | 75 | 50 | 51.7 | 54 | 2.35 | 100 | 0 |
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| 1959 | 62.3 | 68 | 71.1 | 110 | 53.6 | 27 | 7.17 | 22 | 0 |
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| 1958 | 62.2 | 70 | 72.6 | 82 | 51.8 | 52 | 8.68 | 12 | 0 |
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| 1957 | 60.3 | 100 | 70.8 | 115 | 49.7 | 90 | 1.75 | 114 | 0 |
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| 1956 | 61.2 | 84 | 73.9 | 62 | 48.4 | 108 | 1.01 | 124 | 0 |
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| 1955 | 64.1 | 37 | 75.8 | 36 | 52.4 | 46 | 4.31 | 53 | 0 |
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| 1954 | 64.1 | 37 | 74.9 | 52 | 53.3 | 33 | 3.63 | 67 | 0 |
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| 1953 | 63.2 | 53 | 77.1 | 24 | 49.4 | 93 | 1.40 | 119 | 0 |
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| 1952 | 60.3 | 100 | 73.9 | 62 | 46.6 | 121 | 0.97 | 126 | 0 |
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| 1951 | 60.8 | 90 | 71.5 | 103 | 50.1 | 84 | 3.29 | 76 | 0 |
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| 1950 | 61.6 | 77 | 73.1 | 77 | 50.2 | 80 | 2.44 | 97 | 0 |
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| 1949 | 60.4 | 94 | 72.2 | 89 | 48.7 | 103 | 3.80 | 61 | 0 |
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| 1948 | 63.8 | 43 | 75.6 | 41 | 51.9 | 51 | 5.45 | 35 | 0 |
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| 1947 | 67.1 | 6 | 79.1 | 13 | 55.1 | 9 | | | 0 |
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| 1946 | 63.7 | 44 | 75.7 | 40 | 51.6 | 59 | | | 0 |
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| 1945 | 60.3 | 100 | 70.7 | 118 | 49.9 | 87 | 6.43 | 26 | 0 |
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| 1944 | 62.8 | 61 | 71.8 | 96 | 53.8 | 23 | 3.02 | 83 | 0 |
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| 1943 | 59.1 | 119 | 71 | 113 | 47.2 | 116 | 2.97 | 85 | 0 |
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| 1942 | 61.7 | 76 | 71.7 | 98 | 51.7 | 54 | 4.35 | 52 | 0 |
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| 1941 | 65.3 | 28 | 76.1 | 35 | 54.4 | 20 | 13.47 | 2 | 0 |
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| 1940 | 63.1 | 56 | 76.4 | 31 | 49.7 | 90 | 4.19 | 56 | 0 |
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| 1939 | 66.7 | 8 | 80.5 | 3 | 53 | 38 | 1.26 | 122 | 0 |
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| 1938 | 65.5 | 23 | 77.4 | 20 | 53.6 | 27 | 4.45 | 49 | 0 |
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| 1937 | 63.1 | 56 | 75.8 | 36 | 50.4 | 77 | 1.95 | 108 | 0 |
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| 1936 | 64.6 | 32 | 74.3 | 57 | 54.8 | 12 | 10.46 | 6 | 0 |
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| 1935 | 60.1 | 103 | 71.6 | 99 | 48.5 | 105 | 3.29 | 76 | 0 |
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| 1934 | 60.7 | 92 | 72.6 | 82 | 48.8 | 100 | 7.00 | 24 | 0 |
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| 1933 | 65.4 | 25 | 78.2 | 18 | 52.5 | 45 | 3.01 | 84 | 0 |
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| 1932 | 60.1 | 103 | 73.3 | 76 | 46.9 | 120 | 2.60 | 91 | 0 |
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| 1931 | 69.8 | 1 | 81.9 | 2 | 57.7 | 3 | 8.69 | 11 | 0 |
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| 1930 | 65.7 | 19 | 79.7 | 7 | 51.6 | 59 | 5.46 | 34 | 0 |
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| 1929 | 61.1 | 87 | 73.4 | 74 | 48.8 | 100 | 2.24 | 102 | 0 |
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| 1928 | 59.3 | 117 | 73.5 | 69 | 45.1 | 128 | 3.17 | 80 | 0 |
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| 1927 | 64.5 | 34 | 75.8 | 36 | 53.2 | 34 | 10.59 | 5 | 0 |
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| 1926 | 62.5 | 64 | 71.9 | 95 | 53.1 | 35 | 8.71 | 10 | 0 |
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| 1925 | 66.2 | 15 | 79.2 | 12 | 53.1 | 35 | 7.83 | 17 | 0 |
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| 1924 | 58.8 | 121 | 72.6 | 82 | 44.9 | 129 | 2.58 | 92 | 0 |
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| 1923 | | | | | | | | | 10 |
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| 1922 | 68 | 4 | 79.6 | 8 | 56.5 | 4 | 2.41 | 98 | 0 |
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| 1921 | 65.7 | 19 | 76.5 | 29 | 54.8 | 12 | 7.23 | 20 | 0 |
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| 1920 | 66.9 | 7 | 79.9 | 6 | 53.8 | 23 | 0.69 | 127 | 0 |
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| 1919 | 69.2 | 3 | 80.4 | 4 | 58 | 1 | 5.67 | 29 | 0 |
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| 1918 | 59.6 | 110 | 71.4 | 106 | 48.1 | 112 | 1.71 | 116 | 1 |
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| 1917 | 59.1 | 119 | 70.9 | 114 | 47.8 | 115 | 3.59 | 68 | 2 |
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| 1916 | 63.6 | 46 | 76.3 | 32 | 50.8 | 72 | 2.17 | 105 | 0 |
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| 1915 | 61.9 | 75 | 73 | 78 | 50.8 | 72 | 7.22 | 21 | 0 |
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| 1914 | 65.4 | 25 | 77 | 25 | 53.8 | 23 | 16.13 | 1 | 0 |
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| 1913 | 64 | 40 | 75.1 | 48 | 52.9 | 39 | 4.48 | 48 | 0 |
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| 1912 | 62.6 | 63 | 73.4 | 74 | 51.7 | 54 | 4.79 | 47 | 0 |
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| 1911 | 62.3 | 68 | 72.7 | 81 | 52 | 50 | 8.01 | 15 | 0 |
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| 1910 | 62.4 | 66 | 73.7 | 65 | 51.1 | 68 | 3.44 | 70 | 0 |
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| 1909 | 62.7 | 62 | 74.6 | 56 | 50.9 | 70 | 3.97 | 59 | 0 |
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| 1908 | 64 | 40 | 78.1 | 19 | 49.8 | 88 | 1.39 | 120 | 0 |
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| 1907 | 62 | 74 | 73.6 | 67 | 50.4 | 77 | 7.25 | 19 | 0 |
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| 1906 | 67.6 | 5 | 80.1 | 5 | 55 | 11 | 0.99 | 125 | 0 |
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| 1905 | 66.6 | 11 | 78.6 | 16 | 54.7 | 14 | 1.82 | 111 | 0 |
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| 1904 | 63.2 | 53 | 75 | 50 | 51.3 | 66 | 2.00 | 107 | 0 |
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| 1903 | 61 | 88 | 72 | 93 | 50.1 | 84 | 5.33 | 37 | 0 |
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| 1902 | 59.7 | 108 | 69.3 | 127 | 50 | 86 | 5.32 | 38 | 0 |
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| 1901 | | | | | 51.6 | 59 | 3.22 | 78 | 4 |
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| 1900 | 65.9 | 17 | 76.5 | 29 | 55.2 | 8 | 3.04 | 82 | 0 |
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| 1899 | 64.7 | 31 | 78.8 | 15 | 50.6 | 74 | 0.37 | 129 | 0 |
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| 1898 | 65.6 | 21 | 76.2 | 34 | 55.1 | 9 | 3.21 | 79 | 0 |
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| 1897 | 69.3 | 2 | 83.1 | 1 | 55.5 | 7 | 3.78 | 62 | 0 |
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| 1896 | 57.1 | 128 | 68.1 | 129 | 46.2 | 122 | 3.38 | 73 | 0 |
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| 1895 | | | 75.3 | 47 | 54.7 | 14 | 4.25 | 55 | 4 |
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| 1894 | 61.5 | 80 | 71.3 | 108 | 51.7 | 54 | 4.45 | 49 | 2 |
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| 1893 | 63.3 | 51 | 74.7 | 55 | 51.8 | 52 | 3.75 | 64 | 0 |
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