Every April in Indianapolis, IN from 1871 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 | 60.4 | 1 | 71.3 | 1 | 49.5 | 4 | 3.32 | 84 | 0 |
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| 2025 | 54.9 | 32 | 65.5 | 28 | 44.3 | 42 | 8.02 | 5 | 0 |
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| 2024 | 56.1 | 18 | 65.7 | 23 | 46.5 | 16 | 7.77 | 9 | 0 |
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| 2023 | 54.2 | 44 | 65.7 | 23 | 42.6 | 76 | 2.29 | 122 | 0 |
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| 2022 | 51.5 | 100 | 61.4 | 92 | 41.5 | 100 | 4.42 | 45 | 0 |
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| 2021 | 53.2 | 66 | 63.8 | 59 | 42.6 | 76 | 3.80 | 69 | 0 |
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| 2020 | 50.8 | 110 | 60.9 | 100 | 40.6 | 119 | 1.72 | 142 | 0 |
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| 2019 | 54.1 | 46 | 64 | 55 | 44.3 | 42 | 4.96 | 36 | 0 |
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| 2018 | 47.1 | 148 | 57.4 | 142 | 36.8 | 149 | 5.41 | 30 | 0 |
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| 2017 | 59.3 | 4 | 69.6 | 5 | 49 | 6 | 5.60 | 26 | 0 |
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| 2016 | 53.7 | 55 | 64.8 | 40 | 42.6 | 76 | 5.86 | 19 | 0 |
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| 2015 | 54.5 | 41 | 64.8 | 40 | 44.1 | 47 | 4.00 | 62 | 0 |
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| 2014 | 53 | 68 | 64.1 | 54 | 41.9 | 94 | 5.39 | 31 | 0 |
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| 2013 | 52.5 | 78 | 62.9 | 76 | 42.2 | 85 | 8.59 | 2 | 0 |
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| 2012 | 54.5 | 41 | 65.2 | 32 | 43.8 | 51 | 3.36 | 82 | 0 |
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| 2011 | 55.8 | 19 | 66.4 | 17 | 45.1 | 30 | 7.98 | 6 | 0 |
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| 2010 | 59.6 | 3 | 70.7 | 2 | 48.6 | 7 | 2.97 | 100 | 0 |
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| 2009 | 53.9 | 52 | 63.4 | 67 | 44.3 | 42 | 7.23 | 11 | 0 |
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| 2008 | 53.8 | 54 | 64.3 | 51 | 43.3 | 66 | 1.54 | 147 | 0 |
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| 2007 | 50.8 | 110 | 61 | 99 | 40.6 | 119 | 3.30 | 87 | 0 |
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| 2006 | 57.1 | 14 | 67.4 | 14 | 46.8 | 12 | 3.63 | 75 | 0 |
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| 2005 | 55 | 28 | 65.6 | 27 | 44.4 | 40 | 4.69 | 40 | 0 |
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| 2004 | 54.9 | 32 | 65.5 | 28 | 44.4 | 40 | 1.54 | 147 | 0 |
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| 2003 | 54.6 | 40 | 65.2 | 32 | 44 | 48 | 2.55 | 116 | 0 |
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| 2002 | 54.8 | 36 | 64.6 | 45 | 44.9 | 31 | 5.47 | 29 | 0 |
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| 2001 | 58.5 | 6 | 69.7 | 4 | 47.3 | 10 | 1.82 | 138 | 0 |
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| 2000 | 51.4 | 102 | 62 | 86 | 40.8 | 112 | 3.80 | 69 | 0 |
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| 1999 | 54.9 | 32 | 64 | 55 | 45.8 | 23 | 4.09 | 58 | 0 |
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| 1998 | 53.2 | 66 | 62.8 | 78 | 43.7 | 56 | 4.84 | 37 | 0 |
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| 1997 | 48.3 | 140 | 59.7 | 117 | 36.8 | 149 | 1.97 | 132 | 0 |
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| 1996 | 49.3 | 130 | 60.5 | 110 | 38.1 | 144 | 7.02 | 12 | 0 |
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| 1995 | 51.9 | 93 | 63 | 73 | 40.7 | 116 | 2.79 | 105 | 0 |
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| 1994 | 54.1 | 46 | 65.2 | 32 | 43 | 70 | 5.62 | 25 | 0 |
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| 1993 | 50.7 | 113 | 60.3 | 113 | 41.1 | 106 | 3.75 | 71 | 0 |
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| 1992 | 52.1 | 82 | 61.8 | 89 | 42.3 | 81 | 4.17 | 54 | 0 |
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| 1991 | 55.3 | 22 | 64.5 | 49 | 46 | 19 | 4.34 | 48 | 0 |
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| 1990 | 51.4 | 102 | 62.4 | 81 | 40.4 | 124 | 2.44 | 118 | 0 |
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| 1989 | 51.4 | 102 | 61.9 | 88 | 40.9 | 108 | 4.32 | 50 | 0 |
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| 1988 | 51.9 | 93 | 64.4 | 50 | 39.4 | 134 | 4.02 | 61 | 0 |
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| 1987 | 52.5 | 78 | 63.5 | 65 | 41.4 | 101 | 2.68 | 112 | 0 |
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| 1986 | 53.7 | 55 | 66.2 | 19 | 41.3 | 103 | 4.34 | 48 | 0 |
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| 1985 | 57.1 | 14 | 68.1 | 11 | 46 | 19 | 2.60 | 113 | 0 |
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| 1984 | 50 | 124 | 59.2 | 127 | 40.8 | 112 | 3.90 | 66 | 0 |
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| 1983 | 48.2 | 142 | 56.7 | 146 | 39.6 | 133 | 4.47 | 44 | 0 |
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| 1982 | 48.6 | 139 | 59.2 | 127 | 37.9 | 146 | 2.40 | 119 | 0 |
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| 1981 | 57.3 | 13 | 68.1 | 11 | 46.6 | 15 | 5.81 | 21 | 0 |
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| 1980 | 49.1 | 132 | 59.4 | 124 | 38.7 | 139 | 2.10 | 127 | 0 |
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| 1979 | 49.8 | 126 | 59 | 129 | 40.6 | 119 | 3.14 | 96 | 0 |
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| 1978 | 55.2 | 23 | 65.5 | 28 | 44.9 | 31 | 3.59 | 76 | 0 |
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| 1977 | 57.1 | 14 | 69.2 | 6 | 44.9 | 31 | 1.91 | 135 | 0 |
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| 1976 | 53.4 | 63 | 66.2 | 19 | 40.5 | 122 | 0.98 | 156 | 0 |
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| 1975 | 48.8 | 138 | 59.5 | 123 | 38.2 | 142 | 4.14 | 57 | 0 |
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| 1974 | 55 | 28 | 66.5 | 16 | 43.5 | 62 | 3.45 | 79 | 0 |
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| 1973 | 51.3 | 105 | 60.5 | 110 | 42 | 92 | 2.76 | 107 | 0 |
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| 1972 | 52.1 | 82 | 63.4 | 67 | 40.8 | 112 | 5.81 | 21 | 0 |
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| 1971 | 51 | 109 | 64.6 | 45 | 37.4 | 148 | 1.16 | 153 | 0 |
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| 1970 | 55.1 | 25 | 66.4 | 17 | 43.7 | 56 | 6.53 | 14 | 0 |
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| 1969 | 54 | 49 | 65.7 | 23 | 42.3 | 81 | 4.42 | 45 | 0 |
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| 1968 | 53.7 | 55 | 64.7 | 43 | 42.7 | 73 | 2.86 | 103 | 0 |
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| 1967 | 53.6 | 60 | 65 | 36 | 42.1 | 88 | 3.00 | 99 | 0 |
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| 1966 | 51.3 | 105 | 60.9 | 100 | 41.7 | 98 | 3.32 | 84 | 0 |
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| 1965 | 54.4 | 43 | 64.2 | 52 | 44.5 | 37 | 5.80 | 23 | 0 |
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| 1964 | 54.7 | 38 | 64.2 | 52 | 45.2 | 28 | 8.09 | 4 | 0 |
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| 1963 | 53.3 | 64 | 64.6 | 45 | 41.9 | 94 | 2.58 | 115 | 0 |
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| 1962 | 51.1 | 107 | 61.4 | 92 | 40.8 | 112 | 1.69 | 143 | 0 |
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| 1961 | 45.6 | 153 | 55 | 152 | 36.2 | 152 | 6.68 | 13 | 0 |
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| 1960 | 54.8 | 36 | 66.2 | 19 | 43.4 | 64 | 2.05 | 130 | 0 |
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| 1959 | 51.7 | 99 | 62.3 | 82 | 41 | 107 | 3.52 | 78 | 0 |
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| 1958 | 52.1 | 82 | 62.7 | 79 | 41.6 | 99 | 2.51 | 117 | 0 |
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| 1957 | 53.3 | 64 | 62.3 | 82 | 44.3 | 42 | 7.83 | 8 | 0 |
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| 1956 | 48.9 | 135 | 59.3 | 126 | 38.5 | 141 | 4.50 | 43 | 0 |
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| 1955 | 57.1 | 14 | 67.3 | 15 | 46.8 | 12 | 3.31 | 86 | 0 |
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| 1954 | 57.4 | 12 | 68.9 | 7 | 45.9 | 21 | 2.34 | 120 | 0 |
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| 1953 | 47.6 | 146 | 57.8 | 139 | 37.5 | 147 | 3.18 | 95 | 0 |
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| 1952 | 52 | 89 | 63.1 | 71 | 40.9 | 108 | 3.99 | 63 | 0 |
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| 1951 | 48.3 | 140 | 57.9 | 138 | 38.8 | 137 | 3.26 | 89 | 0 |
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| 1950 | 45.9 | 152 | 56 | 148 | 35.7 | 154 | 3.44 | 80 | 0 |
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| 1949 | 50.2 | 123 | 60.6 | 108 | 39.8 | 130 | 1.62 | 144 | 0 |
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| 1948 | 54 | 49 | 65.2 | 32 | 42.7 | 73 | 3.44 | 80 | 0 |
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| 1947 | 50.6 | 116 | 60.8 | 104 | 40.4 | 124 | 5.82 | 20 | 0 |
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| 1946 | 53 | 68 | 64.7 | 43 | 41.2 | 105 | 1.07 | 154 | 0 |
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| 1945 | 52.6 | 76 | 63 | 73 | 42.2 | 85 | 5.11 | 35 | 0 |
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| 1944 | 49.7 | 127 | 59.6 | 119 | 39.9 | 129 | 7.90 | 7 | 0 |
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| 1943 | 47.7 | 144 | 58.6 | 133 | 36.8 | 149 | 1.74 | 140 | 0 |
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| 1942 | 57.9 | 9 | 68.2 | 10 | 47.5 | 9 | 2.82 | 104 | 0 |
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| 1941 | 59 | 5 | 68.8 | 8 | 49.2 | 5 | 1.91 | 135 | 0 |
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| 1940 | 49.1 | 132 | 58.5 | 134 | 39.8 | 130 | 6.05 | 17 | 0 |
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| 1939 | 49.6 | 129 | 58.3 | 136 | 40.9 | 108 | 5.74 | 24 | 0 |
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| 1938 | 54.1 | 46 | 63.2 | 69 | 44.9 | 31 | 3.24 | 91 | 0 |
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| 1937 | 50.7 | 113 | 59.6 | 119 | 41.8 | 97 | 4.27 | 52 | 0 |
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| 1936 | 47.7 | 144 | 56.6 | 147 | 38.8 | 137 | 3.89 | 67 | 0 |
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| 1935 | 48.9 | 135 | 57.6 | 141 | 40.3 | 126 | 1.54 | 147 | 0 |
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| 1934 | 52.1 | 82 | 62.1 | 85 | 42.1 | 88 | 2.23 | 125 | 0 |
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| 1933 | 52.1 | 82 | 61.1 | 97 | 43.1 | 69 | 4.16 | 55 | 0 |
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| 1932 | 51.8 | 97 | 61.3 | 94 | 42.3 | 81 | 2.77 | 106 | 0 |
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| 1931 | 52.7 | 74 | 61.8 | 89 | 43.6 | 60 | 3.58 | 77 | 0 |
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| 1930 | 55.1 | 25 | 64.8 | 40 | 45.4 | 26 | 4.05 | 59 | 0 |
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| 1929 | 55 | 28 | 64.6 | 45 | 45.5 | 24 | 4.28 | 51 | 0 |
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| 1928 | 47.9 | 143 | 57 | 145 | 38.7 | 139 | 2.76 | 107 | 0 |
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| 1927 | 51.9 | 93 | 60.5 | 110 | 43.2 | 68 | 5.16 | 34 | 0 |
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| 1926 | 45.6 | 153 | 55.2 | 151 | 36 | 153 | 3.91 | 65 | 0 |
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| 1925 | 57.7 | 11 | 68.3 | 9 | 47 | 11 | 1.98 | 131 | 0 |
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| 1924 | 53.5 | 62 | 63.2 | 69 | 43.7 | 56 | 3.28 | 88 | 0 |
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| 1923 | 49.9 | 125 | 59.6 | 119 | 40.2 | 127 | 1.94 | 134 | 0 |
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| 1922 | 54.2 | 44 | 63.9 | 58 | 44.5 | 37 | 8.55 | 3 | 0 |
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| 1921 | 55.8 | 19 | 64.9 | 38 | 46.7 | 14 | 3.73 | 72 | 0 |
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| 1920 | 46.8 | 149 | 55.4 | 150 | 38.2 | 142 | 7.26 | 10 | 0 |
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| 1919 | 52.1 | 82 | 60.8 | 104 | 43.5 | 62 | 3.35 | 83 | 0 |
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| 1918 | 48.9 | 135 | 57.3 | 144 | 40.5 | 122 | 5.36 | 32 | 0 |
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| 1917 | 49.1 | 132 | 58.2 | 137 | 40.1 | 128 | 4.25 | 53 | 0 |
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| 1916 | 50.5 | 118 | 58.9 | 131 | 42.1 | 88 | 1.81 | 139 | 0 |
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| 1915 | 58 | 7 | 68.1 | 11 | 48 | 8 | 0.99 | 155 | 0 |
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| 1914 | 51.9 | 93 | 60.8 | 104 | 43 | 70 | 3.21 | 92 | 0 |
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| 1913 | 52 | 89 | 61.2 | 96 | 42.7 | 73 | 3.01 | 98 | 0 |
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| 1912 | 53.9 | 52 | 62.6 | 80 | 45.2 | 28 | 4.62 | 41 | 0 |
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| 1911 | 50.6 | 116 | 58.8 | 132 | 42.3 | 81 | 4.77 | 39 | 0 |
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| 1910 | 52.8 | 73 | 63 | 73 | 42.6 | 76 | 2.92 | 101 | 0 |
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| 1909 | 50.7 | 113 | 60 | 116 | 41.4 | 101 | 4.16 | 55 | 0 |
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| 1908 | 52.2 | 80 | 60.9 | 100 | 43.4 | 64 | 3.86 | 68 | 0 |
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| 1907 | 43.3 | 155 | 51.6 | 155 | 35 | 155 | 2.07 | 128 | 0 |
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| 1906 | 55.1 | 25 | 64.9 | 38 | 45.3 | 27 | 2.13 | 126 | 0 |
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| 1905 | 51.8 | 97 | 60.9 | 100 | 42.8 | 72 | 2.70 | 111 | 0 |
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| 1904 | 46.5 | 150 | 54.9 | 153 | 38 | 145 | 5.53 | 27 | 0 |
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| 1903 | 52.2 | 80 | 60.7 | 107 | 43.7 | 56 | 3.72 | 73 | 0 |
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| 1902 | 50.4 | 121 | 60.1 | 115 | 40.7 | 116 | 1.60 | 145 | 0 |
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| 1901 | 49.3 | 130 | 57.8 | 139 | 40.7 | 116 | 3.19 | 94 | 0 |
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| 1900 | 52.9 | 71 | 62.2 | 84 | 43.6 | 60 | 1.55 | 146 | 0 |
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| 1899 | 55 | 28 | 63.8 | 59 | 46.3 | 17 | 1.36 | 150 | 0 |
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| 1898 | 50.3 | 122 | 59.7 | 117 | 40.9 | 108 | 1.73 | 141 | 0 |
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| 1897 | 50.8 | 110 | 59.4 | 124 | 42.2 | 85 | 4.83 | 38 | 0 |
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| 1896 | 59.9 | 2 | 70.1 | 3 | 49.8 | 2 | 1.27 | 152 | 0 |
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| 1895 | 55.2 | 23 | 65.7 | 23 | 44.7 | 36 | 1.96 | 133 | 0 |
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| 1894 | 54 | 49 | 63.6 | 62 | 44.5 | 37 | 2.72 | 110 | 0 |
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| 1893 | 52 | 89 | 60.2 | 114 | 43.8 | 51 | 8.60 | 1 | 0 |
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| 1892 | 50.5 | 118 | 59 | 129 | 42.1 | 88 | 6.33 | 16 | 0 |
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| 1891 | 55.5 | 21 | 65 | 36 | 45.9 | 21 | 2.30 | 121 | 0 |
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| 1890 | 53.7 | 55 | 63.1 | 71 | 44.3 | 42 | 4.58 | 42 | 0 |
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| 1889 | 53.7 | 55 | 63.6 | 62 | 43.9 | 50 | 2.07 | 128 | 0 |
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| 1888 | 53 | 68 | 64 | 55 | 41.9 | 94 | 4.05 | 59 | 0 |
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| 1887 | 52.1 | 82 | 62.9 | 76 | 41.3 | 103 | 3.92 | 64 | 0 |
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| 1886 | 54.9 | 32 | 63.6 | 62 | 46.1 | 18 | 3.09 | 97 | 0 |
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| 1885 | 52.6 | 76 | 61.3 | 94 | 44 | 48 | 5.28 | 33 | 0 |
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| 1884 | 50.5 | 118 | 58.5 | 134 | 42.6 | 76 | 2.89 | 102 | 0 |
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| 1883 | 53.6 | 60 | 63.5 | 65 | 43.8 | 51 | 2.73 | 109 | 0 |
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| 1882 | 52.7 | 74 | 61.6 | 91 | 43.8 | 51 | 3.68 | 74 | 0 |
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| 1881 | 47.5 | 147 | 55.8 | 149 | 39.2 | 135 | 2.60 | 113 | 0 |
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| 1880 | 54.7 | 38 | 63.8 | 59 | 45.5 | 24 | 6.43 | 15 | 0 |
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| 1879 | 51.5 | 100 | 61.1 | 97 | 42 | 92 | 2.25 | 124 | 0 |
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| 1878 | 57.8 | 10 | 66 | 22 | 49.6 | 3 | 5.51 | 28 | 0 |
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| 1877 | 52.9 | 71 | 62 | 86 | 43.8 | 51 | 3.21 | 92 | 0 |
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| 1876 | 52 | 89 | 60.6 | 108 | 43.3 | 66 | 2.27 | 123 | 0 |
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| 1875 | 49.7 | 127 | 59.6 | 119 | 39.8 | 130 | 1.29 | 151 | 0 |
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| 1874 | 46.1 | 151 | 53 | 154 | 39.2 | 135 | 4.42 | 45 | 0 |
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| 1873 | 51.1 | 107 | 57.4 | 142 | 44.8 | 35 | 5.91 | 18 | 0 |
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| 1872 | 58 | 7 | 65.3 | 31 | 50.7 | 1 | 3.26 | 89 | 0 |
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| 1871 | | | | | | | 1.87 | 137 | 30 |
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