Every 1 to 10 October in Brownsville, TX from 1878 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 | | | | | | | 7.89 | 4 | 2 |
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| 2025 | 83.6 | 4 | 93 | 1 | 74.1 | 20 | 4.06 | 8 | 0 |
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| 2024 | 79.9 | 50 | 88.9 | 46 | 70.8 | 59 | 1.28 | 51 | 0 |
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| 2023 | 83.2 | 7 | 91.6 | 9 | 74.8 | 12 | 1.81 | 38 | 0 |
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| 2022 | 79 | 66 | 88.8 | 48 | 69.1 | 78 | 0.03 | 119 | 0 |
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| 2021 | 81.2 | 27 | 90.6 | 19 | 71.8 | 47 | 8.11 | 3 | 0 |
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| 2020 | 77.7 | 86 | 88.8 | 48 | 66.5 | 109 | trace | 128 | 0 |
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| 2019 | 83.5 | 5 | 91.8 | 8 | 75.1 | 8 | 0.58 | 78 | 0 |
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| 2018 | 84.9 | 1 | 92.6 | 4 | 77.1 | 2 | 0.75 | 70 | 0 |
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| 2017 | 81.4 | 26 | 89.8 | 30 | 73 | 28 | 1.80 | 39 | 0 |
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| 2016 | 82 | 14 | 91.9 | 7 | 72.1 | 42 | 0.21 | 98 | 0 |
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| 2015 | 78.5 | 73 | 88.9 | 46 | 68.1 | 90 | 2.70 | 20 | 0 |
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| 2014 | 82.7 | 12 | 90.2 | 25 | 75.1 | 8 | trace | 128 | 0 |
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| 2013 | 79 | 66 | 89 | 42 | 68.9 | 81 | 0.24 | 94 | 0 |
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| 2012 | 77.5 | 89 | 87.5 | 70 | 67.4 | 97 | 0.08 | 110 | 0 |
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| 2011 | 79.6 | 55 | 89.2 | 40 | 69.9 | 70 | 0.98 | 61 | 0 |
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| 2010 | 75.9 | 112 | 87.1 | 79 | 64.6 | 123 | 0.00 | 138 | 0 |
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| 2009 | 83 | 10 | 89.9 | 28 | 76 | 3 | 1.32 | 50 | 0 |
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| 2008 | 77.2 | 94 | 87.5 | 70 | 66.9 | 106 | 0.67 | 73 | 0 |
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| 2007 | 80.5 | 42 | 89.6 | 34 | 71.4 | 50 | 1.01 | 58 | 0 |
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| 2006 | 78.8 | 69 | 87 | 80 | 70.6 | 60 | 1.71 | 42 | 0 |
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| 2005 | 80.3 | 44 | 89.4 | 36 | 71.1 | 56 | 0.61 | 76 | 0 |
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| 2004 | 80.5 | 42 | 88.6 | 54 | 72.4 | 36 | 1.69 | 43 | 0 |
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| 2003 | 78.1 | 81 | 85.6 | 107 | 70.5 | 61 | 1.07 | 56 | 0 |
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| 2002 | 81.6 | 20 | 89 | 42 | 74.1 | 20 | 3.60 | 11 | 0 |
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| 2001 | 77.7 | 86 | 86.5 | 90 | 68.8 | 83 | 0.35 | 83 | 0 |
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| 2000 | 70.3 | 144 | 79.5 | 145 | 61.1 | 142 | 2.26 | 30 | 0 |
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| 1999 | 78.4 | 76 | 88.8 | 48 | 68 | 92 | 0.21 | 98 | 0 |
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| 1998 | 78.9 | 68 | 87.7 | 67 | 70.1 | 68 | 1.05 | 57 | 0 |
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| 1997 | 79.1 | 64 | 85.8 | 101 | 72.4 | 36 | 2.61 | 23 | 0 |
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| 1996 | 76 | 109 | 82.6 | 139 | 69.3 | 74 | 11.24 | 1 | 0 |
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| 1995 | 76.5 | 105 | 88.2 | 60 | 64.8 | 121 | 0.16 | 101 | 0 |
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| 1994 | 77.2 | 94 | 85.4 | 113 | 68.9 | 81 | 3.08 | 17 | 0 |
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| 1993 | 80.2 | 46 | 91.2 | 11 | 69.2 | 75 | 0.91 | 63 | 0 |
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| 1992 | 74.5 | 126 | 85.5 | 111 | 63.4 | 132 | 0.01 | 122 | 0 |
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| 1991 | 76.4 | 106 | 84.8 | 122 | 68 | 92 | 3.30 | 14 | 0 |
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| 1990 | 80.6 | 37 | 90.6 | 19 | 70.5 | 61 | 0.10 | 105 | 0 |
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| 1989 | 78.6 | 70 | 89.8 | 30 | 67.4 | 97 | 0.06 | 114 | 0 |
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| 1988 | 74.7 | 125 | 85.7 | 104 | 63.7 | 129 | 0.14 | 103 | 0 |
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| 1987 | 73.5 | 137 | 85.6 | 107 | 61.3 | 141 | trace | 128 | 0 |
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| 1986 | 84.1 | 2 | 92.2 | 6 | 75.9 | 5 | 2.47 | 27 | 0 |
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| 1985 | 75 | 120 | 84.5 | 126 | 65.4 | 118 | 0.00 | 138 | 0 |
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| 1984 | 79.2 | 62 | 86.5 | 90 | 71.9 | 45 | 0.01 | 122 | 0 |
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| 1983 | 80.6 | 37 | 89.8 | 30 | 71.3 | 52 | 0.21 | 98 | 0 |
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| 1982 | 83.4 | 6 | 91.2 | 11 | 75.6 | 6 | 1.38 | 48 | 0 |
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| 1981 | 83.7 | 3 | 91.3 | 10 | 76 | 3 | 0.23 | 97 | 0 |
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| 1980 | 76.1 | 108 | 88.8 | 48 | 63.4 | 132 | 0.00 | 138 | 0 |
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| 1979 | 75.8 | 113 | 87.4 | 73 | 64.1 | 127 | 0.00 | 138 | 0 |
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| 1978 | 79.2 | 62 | 86.6 | 88 | 71.8 | 47 | 3.98 | 9 | 0 |
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| 1977 | 82.1 | 13 | 90.8 | 18 | 73.3 | 25 | 2.15 | 33 | 0 |
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| 1976 | 70.4 | 143 | 80.9 | 142 | 59.9 | 145 | 0.60 | 77 | 0 |
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| 1975 | 74 | 133 | 85.1 | 115 | 62.9 | 136 | trace | 128 | 0 |
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| 1974 | 74.2 | 127 | 83.9 | 130 | 64.4 | 126 | 0.16 | 101 | 0 |
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| 1973 | 81.6 | 20 | 90.4 | 22 | 72.7 | 32 | 0.32 | 87 | 0 |
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| 1972 | 76.7 | 102 | 86.8 | 85 | 66.6 | 107 | trace | 128 | 0 |
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| 1971 | 78.1 | 81 | 85 | 117 | 71.2 | 54 | 2.53 | 25 | 0 |
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| 1970 | 77 | 97 | 85.1 | 115 | 68.8 | 83 | 2.19 | 31 | 0 |
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| 1969 | 80.7 | 36 | 88.3 | 59 | 73 | 28 | 0.89 | 64 | 0 |
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| 1968 | 81.6 | 20 | 88.7 | 53 | 74.4 | 16 | 3.16 | 15 | 0 |
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| 1967 | 75.8 | 113 | 83.5 | 135 | 68 | 92 | 1.20 | 52 | 0 |
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| 1966 | 76.6 | 104 | 84.9 | 118 | 68.3 | 87 | 0.89 | 64 | 0 |
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| 1965 | 69.5 | 145 | 77.1 | 146 | 61.9 | 139 | 0.35 | 83 | 0 |
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| 1964 | 73.4 | 138 | 83.9 | 130 | 62.9 | 136 | 0.01 | 122 | 0 |
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| 1963 | 75.5 | 118 | 84.8 | 122 | 66.1 | 111 | 0.30 | 88 | 0 |
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| 1962 | 83.1 | 8 | 91.1 | 14 | 75.1 | 8 | 0.40 | 82 | 0 |
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| 1961 | 75 | 120 | 84.2 | 129 | 65.8 | 113 | 0.33 | 86 | 0 |
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| 1960 | 79.7 | 52 | 90.1 | 26 | 69.2 | 75 | 0.75 | 70 | 0 |
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| 1959 | 81.7 | 18 | 90.1 | 26 | 73.2 | 26 | 1.44 | 46 | 0 |
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| 1958 | 74.2 | 127 | 80.9 | 142 | 67.4 | 97 | 3.85 | 10 | 0 |
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| 1957 | 77.4 | 90 | 87.6 | 68 | 67.1 | 101 | 0.01 | 122 | 0 |
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| 1956 | 77.6 | 88 | 87.8 | 65 | 67.3 | 100 | 0.05 | 115 | 0 |
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| 1955 | 78.2 | 80 | 85.9 | 100 | 70.4 | 65 | 2.00 | 35 | 0 |
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| 1954 | 79.6 | 55 | 84.8 | 122 | 74.3 | 18 | 9.88 | 2 | 0 |
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| 1953 | 75.7 | 116 | 84.9 | 118 | 66.5 | 109 | 1.39 | 47 | 0 |
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| 1952 | 72.7 | 141 | 83.6 | 134 | 61.7 | 140 | 1.78 | 40 | 0 |
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| 1951 | 78.4 | 76 | 87.6 | 68 | 69.1 | 78 | 0.27 | 92 | 0 |
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| 1950 | 79.3 | 61 | 86.9 | 83 | 71.6 | 49 | 2.16 | 32 | 0 |
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| 1949 | 81.1 | 31 | 87.4 | 73 | 74.8 | 12 | 0.08 | 110 | 0 |
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| 1948 | 76.9 | 100 | 88.1 | 63 | 65.7 | 114 | trace | 128 | 0 |
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| 1947 | 78.6 | 70 | 88.4 | 58 | 68.8 | 83 | 0.41 | 80 | 0 |
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| 1946 | 79.6 | 55 | 87.2 | 77 | 72 | 43 | 1.37 | 49 | 0 |
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| 1945 | 79.4 | 59 | 86.5 | 90 | 72.2 | 41 | 5.51 | 6 | 0 |
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| 1944 | 79.9 | 50 | 87 | 80 | 72.7 | 32 | 3.55 | 12 | 0 |
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| 1943 | 73.6 | 136 | 82.7 | 138 | 64.5 | 124 | 1.54 | 45 | 0 |
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| 1942 | 77.2 | 94 | 86.5 | 90 | 67.9 | 95 | 0.08 | 110 | 0 |
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| 1941 | 82.8 | 11 | 88.2 | 60 | 77.3 | 1 | 1.16 | 55 | 0 |
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| 1940 | 77 | 97 | 85.8 | 101 | 68.2 | 89 | 0.72 | 72 | 0 |
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| 1939 | 80.1 | 48 | 87.2 | 77 | 72.9 | 30 | 0.28 | 91 | 0 |
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| 1938 | 79.5 | 58 | 88.5 | 55 | 70.5 | 61 | 0.41 | 80 | 0 |
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| 1937 | 81.5 | 25 | 90.3 | 24 | 72.6 | 34 | 0.03 | 119 | 0 |
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| 1936 | 74.2 | 127 | 82.8 | 137 | 65.5 | 117 | 0.05 | 115 | 0 |
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| 1935 | 77.4 | 90 | 86.3 | 95 | 68.5 | 86 | 0.00 | 138 | 0 |
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| 1934 | 75.7 | 116 | 86 | 99 | 65.3 | 119 | 0.09 | 108 | 0 |
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| 1933 | 77 | 97 | 83.7 | 133 | 70.3 | 66 | 2.35 | 28 | 0 |
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| 1932 | 74.2 | 127 | 82.4 | 140 | 66 | 112 | 0.62 | 75 | 0 |
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| 1931 | 81.1 | 31 | 89.9 | 28 | 72.3 | 39 | 0.88 | 66 | 0 |
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| 1930 | 79.7 | 52 | 87 | 80 | 72.3 | 39 | 3.38 | 13 | 0 |
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| 1929 | 79.7 | 52 | 88.8 | 48 | 70.5 | 61 | 0.00 | 138 | 0 |
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| 1928 | 81.7 | 18 | 88.5 | 55 | 74.8 | 12 | trace | 128 | 0 |
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| 1927 | 80.6 | 37 | 87.3 | 75 | 73.8 | 22 | 2.54 | 24 | 0 |
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| 1926 | 81.6 | 20 | 89 | 42 | 74.2 | 19 | 0.03 | 119 | 0 |
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| 1925 | 81.2 | 27 | 87.3 | 75 | 75 | 11 | 2.34 | 29 | 0 |
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| 1924 | 79.1 | 64 | 86.8 | 85 | 71.3 | 52 | 1.00 | 59 | 0 |
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| 1923 | 78.3 | 78 | 84.7 | 125 | 71.9 | 45 | 2.79 | 19 | 0 |
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| 1922 | 76.7 | 102 | 85.3 | 114 | 68.1 | 90 | 0.07 | 113 | 0 |
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| 1921 | 77.4 | 90 | 87.8 | 65 | 67 | 104 | 1.90 | 36 | 0 |
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| 1920 | 75.8 | 113 | 89.6 | 34 | 62 | 138 | 0.04 | 118 | 0 |
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| 1919 | 82 | 14 | 90.4 | 22 | 73.6 | 24 | 1.73 | 41 | 0 |
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| 1918 | 81.1 | 31 | 92.8 | 3 | 69.4 | 71 | 0.26 | 93 | 0 |
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| 1917 | 74.8 | 124 | 86.6 | 88 | 63 | 135 | trace | 128 | 0 |
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| 1916 | 77.3 | 93 | 87.5 | 70 | 67.1 | 101 | 2.06 | 34 | 0 |
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| 1915 | 75 | 120 | 86.1 | 97 | 63.9 | 128 | 0.78 | 69 | 0 |
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| 1914 | 78.3 | 78 | 90.9 | 16 | 65.7 | 114 | 0.00 | 138 | 0 |
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| 1913 | 82 | 14 | 89.4 | 36 | 74.5 | 15 | 0.30 | 88 | 0 |
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| 1912 | 77.9 | 84 | 86.5 | 90 | 69.2 | 75 | 1.64 | 44 | 0 |
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| 1911 | 80.3 | 44 | 88.1 | 63 | 72.4 | 36 | 0.10 | 105 | 0 |
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| 1910 | 76 | 109 | 84.9 | 118 | 67 | 104 | 1.00 | 59 | 0 |
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| 1909 | 74.2 | 127 | 84.9 | 118 | 63.5 | 130 | 0.00 | 138 | 0 |
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| 1908 | 75.2 | 119 | 86.9 | 83 | 63.5 | 130 | 0.01 | 122 | 0 |
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| 1907 | 81.2 | 27 | 89.1 | 41 | 73.2 | 26 | 0.13 | 104 | 0 |
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| 1905 | 80.9 | 34 | 89 | 42 | 72.8 | 31 | 3.15 | 16 | 0 |
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| 1904 | 81.6 | 20 | 91.1 | 14 | 72 | 43 | 0.64 | 74 | 0 |
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| 1903 | 80.6 | 37 | 90.9 | 16 | 70.2 | 67 | 0.00 | 138 | 0 |
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| 1902 | 73.3 | 139 | 85.6 | 107 | 60.9 | 144 | 0.85 | 68 | 0 |
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| 1901 | 78 | 83 | 88.2 | 60 | 67.8 | 96 | 1.90 | 36 | 0 |
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| 1900 | 80.9 | 34 | 92.3 | 5 | 69.4 | 71 | 1.20 | 52 | 0 |
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| 1899 | 74 | 133 | 86.8 | 85 | 61.1 | 142 | 3.08 | 17 | 0 |
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| 1897 | 76 | 109 | 86.3 | 95 | 65.6 | 116 | 0.87 | 67 | 0 |
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| 1896 | 73.9 | 135 | 84.5 | 126 | 63.2 | 134 | 0.24 | 94 | 0 |
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| 1895 | 74.2 | 127 | 83.8 | 132 | 64.5 | 124 | 0.09 | 108 | 0 |
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| 1894 | 80.1 | 48 | 91.2 | 11 | 69 | 80 | 0.05 | 115 | 0 |
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| 1893 | 81.2 | 27 | 92.9 | 2 | 69.4 | 71 | 0.34 | 85 | 0 |
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| 1892 | | | 89.4 | 36 | | | 0.10 | 105 | 10 |
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| 1891 | 72.5 | 142 | 79.9 | 144 | 65.1 | 120 | 2.68 | 21 | 0 |
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| 1890 | 80.2 | 46 | 89.4 | 36 | 71 | 57 | 0.29 | 90 | 0 |
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| 1889 | 76.4 | 106 | 85.7 | 104 | 67.1 | 101 | trace | 128 | 0 |
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| 1888 | 77.9 | 84 | 85.6 | 107 | 70.1 | 68 | 0.24 | 94 | 0 |
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| 1887 | 79.4 | 59 | 84.4 | 128 | 74.4 | 16 | 2.48 | 26 | 0 |
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| 1886 | 75 | 120 | 83.4 | 136 | 66.6 | 107 | 0.01 | 122 | 0 |
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| 1885 | 76.9 | 100 | 85.5 | 111 | 68.3 | 87 | 5.70 | 5 | 0 |
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| 1884 | 78.6 | 70 | 85.7 | 104 | 71.4 | 50 | 2.65 | 22 | 0 |
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| 1883 | 83.1 | 8 | 90.6 | 19 | 75.6 | 6 | 0.00 | 138 | 0 |
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| 1882 | 81.8 | 17 | 89.8 | 30 | 73.7 | 23 | trace | 128 | 0 |
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| 1881 | 78.5 | 73 | 86.1 | 97 | 70.9 | 58 | 4.55 | 7 | 0 |
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| 1880 | 72.9 | 140 | 81 | 141 | 64.8 | 121 | 0.92 | 62 | 0 |
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| 1879 | 78.5 | 73 | 85.8 | 101 | 71.2 | 54 | 1.17 | 54 | 0 |
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| 1878 | 80.6 | 37 | 88.5 | 55 | 72.6 | 34 | 0.56 | 79 | 0 |
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