Every January 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 | 64.5 | 27 | 75.1 | 22 | 53.9 | 39 | 0.18 | 134 | 0 |
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| 2025 | 60.2 | 73 | 68.1 | 95 | 52.3 | 57 | 1.11 | 68 | 0 |
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| 2024 | 61.8 | 55 | 72.1 | 46 | 51.5 | 65 | 1.54 | 53 | 0 |
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| 2023 | 66.8 | 8 | 76.7 | 3 | 56.8 | 15 | 0.27 | 124 | 0 |
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| 2022 | 61.8 | 55 | 72.2 | 44 | 51.5 | 65 | 2.54 | 25 | 0 |
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| 2021 | 63.6 | 38 | 73.9 | 32 | 53.4 | 45 | 0.90 | 75 | 0 |
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| 2020 | 67.2 | 6 | 76.5 | 5 | 57.9 | 7 | 0.53 | 100 | 0 |
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| 2019 | 62.8 | 45 | 72.1 | 46 | 53.4 | 45 | 1.60 | 51 | 0 |
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| 2018 | 58.5 | 97 | 68.9 | 88 | 48 | 114 | 0.76 | 80 | 0 |
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| 2017 | 66.3 | 12 | 77.4 | 1 | 55.3 | 28 | 0.18 | 134 | 0 |
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| 2016 | 58.9 | 90 | 69.2 | 85 | 48.5 | 108 | 1.88 | 40 | 0 |
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| 2015 | 55.7 | 124 | 64.2 | 129 | 47.1 | 121 | 3.56 | 12 | 0 |
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| 2014 | 57.9 | 105 | 69.7 | 75 | 46.1 | 124 | 0.68 | 86 | 0 |
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| 2013 | 61.5 | 62 | 70.7 | 65 | 52.3 | 57 | 1.47 | 58 | 0 |
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| 2012 | 66.4 | 11 | 76.4 | 6 | 56.4 | 20 | 0.34 | 120 | 0 |
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| 2011 | 62.2 | 53 | 72.6 | 43 | 51.8 | 63 | 2.42 | 28 | 0 |
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| 2010 | 60.6 | 72 | 70.2 | 71 | 50.9 | 71 | 0.61 | 92 | 0 |
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| 2009 | 63.7 | 36 | 75.3 | 20 | 52.1 | 61 | 0.11 | 138 | 0 |
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| 2008 | 61.3 | 64 | 70.4 | 68 | 52.3 | 57 | 1.34 | 61 | 0 |
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| 2007 | 56.9 | 116 | 64.8 | 126 | 49.1 | 97 | 1.84 | 41 | 0 |
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| 2006 | 65.1 | 24 | 76.1 | 10 | 54 | 37 | 0.68 | 86 | 0 |
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| 2005 | 66.7 | 9 | 75.8 | 13 | 57.6 | 10 | 0.57 | 98 | 0 |
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| 2004 | 62.6 | 47 | 70.8 | 63 | 54.5 | 34 | 1.84 | 41 | 0 |
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| 2003 | 58.8 | 92 | 68.1 | 95 | 49.5 | 88 | 0.69 | 84 | 0 |
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| 2002 | 63.8 | 34 | 74.2 | 30 | 53.4 | 45 | 0.09 | 141 | 0 |
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| 2001 | 59.5 | 81 | 68.9 | 88 | 50.2 | 79 | 0.48 | 105 | 0 |
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| 2000 | 66 | 15 | 75.7 | 14 | 56.4 | 20 | 0.85 | 77 | 0 |
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| 1999 | 64.7 | 26 | 75.7 | 14 | 53.7 | 42 | 0.26 | 126 | 0 |
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| 1998 | 65.2 | 22 | 75.5 | 18 | 55 | 31 | 0.37 | 116 | 0 |
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| 1997 | 58.2 | 101 | 67 | 108 | 49.3 | 92 | 0.61 | 92 | 0 |
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| 1996 | 60.8 | 71 | 72.8 | 39 | 48.8 | 102 | 0.07 | 143 | 0 |
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| 1995 | 61.3 | 64 | 70.1 | 73 | 52.6 | 54 | 0.64 | 91 | 0 |
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| 1994 | 62.6 | 47 | 72.2 | 44 | 53 | 50 | 2.01 | 35 | 0 |
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| 1993 | 61.2 | 67 | 69.7 | 75 | 52.7 | 53 | 1.79 | 45 | 0 |
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| 1992 | 58 | 104 | 65 | 123 | 51 | 69 | 3.50 | 13 | 0 |
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| 1991 | 58.4 | 99 | 67.7 | 98 | 49.2 | 94 | 0.47 | 107 | 0 |
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| 1990 | 65.1 | 24 | 75 | 23 | 55.1 | 29 | 0.58 | 97 | 0 |
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| 1989 | 66.2 | 13 | 74.7 | 26 | 57.7 | 8 | 1.94 | 38 | 0 |
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| 1988 | 55.6 | 125 | 63.8 | 131 | 47.4 | 119 | 3.97 | 7 | 0 |
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| 1987 | 59.4 | 83 | 69.2 | 85 | 49.5 | 88 | 2.46 | 26 | 0 |
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| 1986 | 60.9 | 70 | 72.7 | 40 | 49.2 | 94 | 1.07 | 71 | 0 |
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| 1985 | 54.4 | 135 | 64.7 | 128 | 44.1 | 139 | 1.49 | 56 | 0 |
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| 1984 | 55.9 | 122 | 63.1 | 136 | 48.7 | 105 | 4.79 | 2 | 0 |
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| 1983 | 59.7 | 77 | 69.4 | 82 | 50.1 | 80 | 1.10 | 69 | 0 |
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| 1982 | 62.6 | 47 | 74.3 | 29 | 51 | 69 | 0.04 | 144 | 0 |
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| 1981 | 59.7 | 77 | 69.3 | 83 | 50.1 | 80 | 1.79 | 45 | 0 |
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| 1980 | 63.9 | 33 | 73.8 | 34 | 54 | 37 | 1.05 | 72 | 0 |
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| 1979 | 56.3 | 119 | 64.8 | 126 | 47.8 | 117 | 1.43 | 60 | 0 |
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| 1978 | 54.6 | 133 | 63.5 | 135 | 45.7 | 129 | 1.94 | 38 | 0 |
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| 1977 | 54.9 | 132 | 63.8 | 131 | 46.1 | 124 | 1.24 | 64 | 0 |
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| 1976 | 59.1 | 86 | 69.5 | 78 | 48.6 | 106 | 0.48 | 105 | 0 |
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| 1975 | 61.7 | 59 | 72 | 50 | 51.3 | 68 | 0.60 | 94 | 0 |
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| 1974 | 61.3 | 64 | 70.2 | 71 | 52.5 | 55 | 0.65 | 89 | 0 |
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| 1973 | 54.5 | 134 | 64.2 | 129 | 44.7 | 136 | 2.07 | 33 | 0 |
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| 1972 | 66 | 15 | 75 | 23 | 56.9 | 13 | 1.30 | 63 | 0 |
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| 1971 | 66.5 | 10 | 76.3 | 8 | 56.7 | 17 | 0.22 | 129 | 0 |
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| 1970 | 57.6 | 110 | 66.3 | 114 | 48.8 | 102 | 4.12 | 5 | 0 |
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| 1969 | 64.2 | 30 | 73 | 36 | 55.4 | 26 | 0.51 | 102 | 0 |
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| 1968 | 57.7 | 107 | 65.6 | 118 | 49.9 | 85 | 3.08 | 18 | 0 |
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| 1967 | 58.4 | 99 | 67.8 | 97 | 49.1 | 97 | 1.69 | 47 | 0 |
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| 1966 | 54.3 | 136 | 62.8 | 138 | 45.8 | 128 | 3.45 | 14 | 0 |
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| 1965 | 63 | 41 | 72.9 | 37 | 53.1 | 48 | 0.51 | 102 | 0 |
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| 1964 | 59.6 | 79 | 69.3 | 83 | 49.8 | 86 | 0.35 | 117 | 0 |
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| 1963 | 56.3 | 119 | 67.1 | 107 | 45.5 | 130 | 0.23 | 128 | 0 |
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| 1962 | 55.9 | 122 | 66.8 | 111 | 45 | 134 | 0.60 | 94 | 0 |
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| 1961 | 55.5 | 127 | 63.8 | 131 | 47.1 | 121 | 1.95 | 37 | 0 |
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| 1960 | 61.6 | 60 | 69.8 | 74 | 53.5 | 44 | 0.65 | 89 | 0 |
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| 1959 | 56.8 | 117 | 65.2 | 120 | 48.4 | 109 | 2.98 | 19 | 0 |
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| 1958 | 57.9 | 105 | 67.6 | 100 | 48.3 | 110 | 3.98 | 6 | 0 |
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| 1957 | 65.4 | 21 | 74.5 | 27 | 56.4 | 20 | 0.35 | 117 | 0 |
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| 1956 | 63 | 41 | 74 | 31 | 52 | 62 | trace | 145 | 0 |
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| 1955 | 62.9 | 43 | 72 | 50 | 53.8 | 40 | 1.15 | 66 | 0 |
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| 1954 | 65.2 | 22 | 75 | 23 | 55.4 | 26 | 0.27 | 124 | 0 |
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| 1953 | 64.4 | 28 | 76.4 | 6 | 52.5 | 55 | trace | 145 | 0 |
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| 1952 | 67.4 | 5 | 75.9 | 11 | 58.9 | 6 | 0.10 | 139 | 0 |
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| 1951 | 61.8 | 55 | 71.7 | 56 | 51.8 | 63 | 0.68 | 86 | 0 |
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| 1950 | 68.7 | 2 | 76.8 | 2 | 60.5 | 3 | 0.18 | 134 | 0 |
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| 1949 | 59.1 | 86 | 67.4 | 103 | 50.7 | 72 | 0.39 | 115 | 0 |
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| 1948 | 55 | 130 | 65.6 | 118 | 44.4 | 137 | 1.50 | 55 | 0 |
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| 1947 | 57.2 | 115 | 64.9 | 124 | 49.5 | 88 | 0.22 | 129 | 0 |
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| 1946 | 58.6 | 95 | 67.7 | 98 | 49.6 | 87 | 2.75 | 21 | 0 |
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| 1945 | 62.6 | 47 | 71.1 | 57 | 54.1 | 36 | 5.11 | 1 | 0 |
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| 1944 | 60 | 74 | 69.5 | 78 | 50.4 | 75 | 0.52 | 101 | 0 |
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| 1943 | 57.7 | 107 | 67.3 | 104 | 48.2 | 112 | 1.80 | 44 | 0 |
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| 1942 | 57.6 | 110 | 65.2 | 120 | 50 | 82 | 0.60 | 94 | 0 |
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| 1941 | 64 | 31 | 70.8 | 63 | 57.3 | 12 | 0.73 | 81 | 0 |
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| 1940 | 54.2 | 138 | 63.1 | 136 | 45.2 | 133 | 0.29 | 122 | 0 |
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| 1939 | 64.4 | 28 | 71.9 | 54 | 56.9 | 13 | 1.55 | 52 | 0 |
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| 1938 | 61.6 | 60 | 68.5 | 92 | 54.7 | 32 | 0.92 | 74 | 0 |
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| 1937 | 61.4 | 63 | 67.2 | 105 | 55.7 | 25 | 2.09 | 32 | 0 |
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| 1936 | 57.5 | 112 | 65.8 | 116 | 49.1 | 97 | 0.41 | 113 | 0 |
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| 1935 | 65.7 | 19 | 73.9 | 32 | 57.5 | 11 | 0.90 | 75 | 0 |
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| 1934 | 64 | 31 | 71.1 | 57 | 56.8 | 15 | 2.37 | 29 | 0 |
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| 1933 | 65.8 | 17 | 72 | 50 | 59.7 | 4 | 0.22 | 129 | 0 |
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| 1932 | 63.8 | 34 | 71 | 60 | 56.5 | 19 | 1.48 | 57 | 0 |
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| 1931 | 60 | 74 | 66.9 | 109 | 53.1 | 48 | 4.56 | 3 | 0 |
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| 1930 | 53.8 | 140 | 61.5 | 143 | 46.1 | 124 | 0.56 | 99 | 0 |
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| 1929 | 63.1 | 40 | 71.1 | 57 | 55.1 | 29 | 0.46 | 109 | 0 |
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| 1928 | 58.5 | 97 | 66.6 | 112 | 50.4 | 75 | 1.33 | 62 | 0 |
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| 1927 | 63.7 | 36 | 72.7 | 40 | 54.7 | 32 | 1.46 | 59 | 0 |
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| 1926 | 55 | 130 | 62.4 | 140 | 47.6 | 118 | 2.72 | 23 | 0 |
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| 1925 | 58.8 | 92 | 68.3 | 93 | 49.3 | 92 | 0.42 | 112 | 0 |
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| 1924 | 55.3 | 128 | 62.5 | 139 | 48 | 114 | 3.42 | 15 | 0 |
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| 1923 | 67.6 | 4 | 75.9 | 11 | 59.4 | 5 | 0.13 | 137 | 0 |
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| 1922 | 57.7 | 107 | 66.1 | 115 | 49.4 | 91 | 1.51 | 54 | 0 |
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| 1921 | 65.8 | 17 | 75.7 | 14 | 55.9 | 24 | 2.26 | 31 | 0 |
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| 1920 | 58.2 | 101 | 67.6 | 100 | 48.8 | 102 | 1.13 | 67 | 0 |
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| 1919 | 56.1 | 121 | 66.6 | 112 | 45.5 | 130 | 4.56 | 3 | 0 |
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| 1918 | 58.1 | 103 | 72.1 | 46 | 44 | 140 | 0.08 | 142 | 0 |
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| 1917 | 62.2 | 53 | 71 | 60 | 53.8 | 40 | 0.28 | 123 | 1 |
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| 1916 | 67.2 | 6 | 76.6 | 4 | 57.7 | 8 | 0.19 | 133 | 0 |
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| 1915 | 58.8 | 92 | 67.6 | 100 | 50 | 82 | 3.35 | 16 | 0 |
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| 1914 | 62.6 | 47 | 74.5 | 27 | 50.7 | 72 | 0.10 | 139 | 0 |
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| 1913 | 58.6 | 95 | 68.2 | 94 | 49.1 | 97 | 2.05 | 34 | 0 |
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| 1912 | 57.5 | 112 | 68.9 | 88 | 46 | 127 | 3.28 | 17 | 0 |
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| 1911 | 66.1 | 14 | 75.6 | 17 | 56.7 | 17 | 0.45 | 111 | 0 |
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| 1910 | 63.2 | 39 | 73.4 | 35 | 53 | 50 | 0.35 | 117 | 0 |
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| 1909 | 65.7 | 19 | 75.3 | 20 | 56.1 | 23 | trace | 145 | 0 |
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| 1908 | 62.8 | 45 | 72.1 | 46 | 53.6 | 43 | 0.71 | 82 | 0 |
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| 1906 | 59.3 | 84 | 70.4 | 68 | 48.3 | 110 | 0.24 | 127 | 0 |
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| 1905 | 59.9 | 76 | 69.5 | 78 | 50.3 | 77 | 1.61 | 50 | 0 |
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| 1904 | 59.5 | 81 | 71 | 60 | 47.9 | 116 | 0.40 | 114 | 0 |
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| 1903 | 59.6 | 79 | 70.5 | 67 | 48.6 | 106 | 2.35 | 30 | 0 |
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| 1902 | | | 69.5 | 78 | | | 0.50 | 104 | 31 |
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| 1901 | 56.8 | 117 | 70.4 | 68 | 43.1 | 142 | 0.30 | 121 | 0 |
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| 1900 | | | 69.6 | 77 | | | 2.43 | 27 | 31 |
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| 1899 | 59 | 88 | 70.7 | 65 | 47.4 | 119 | 0.46 | 109 | 0 |
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| 1897 | | | | | | | 0.70 | 83 | 31 |
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| 1896 | 62.5 | 52 | 72.7 | 40 | 52.2 | 60 | 0.81 | 78 | 0 |
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| 1895 | 61 | 68 | 72 | 50 | 50 | 82 | 0.47 | 107 | 0 |
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| 1894 | 61 | 68 | 71.8 | 55 | 50.3 | 77 | 1.67 | 48 | 0 |
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| 1893 | | | | | 44.8 | 135 | 3.87 | 8 | 31 |
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| 1892 | | | | | | | 0.77 | 79 | 31 |
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| 1891 | 62.9 | 43 | 72.9 | 37 | 52.9 | 52 | 1.65 | 49 | 0 |
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| 1890 | 69.2 | 1 | 76.3 | 8 | 62.1 | 1 | 0.69 | 84 | 0 |
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| 1889 | 59.2 | 85 | 66.9 | 109 | 51.5 | 65 | 2.72 | 23 | 0 |
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| 1888 | 55.3 | 128 | 62.3 | 141 | 48.2 | 112 | 1.98 | 36 | 0 |
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| 1887 | 58.9 | 90 | 68.8 | 91 | 49 | 101 | 0.22 | 129 | 0 |
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| 1886 | 54.3 | 136 | 65.1 | 122 | 43.6 | 141 | 1.81 | 43 | 0 |
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| 1885 | 53.7 | 141 | 62 | 142 | 45.5 | 130 | 3.87 | 8 | 0 |
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| 1884 | 54 | 139 | 63.8 | 131 | 44.3 | 138 | 1.10 | 69 | 0 |
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| 1883 | 55.6 | 125 | 64.9 | 124 | 46.4 | 123 | 1.22 | 65 | 0 |
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| 1882 | 61.8 | 55 | 69.2 | 85 | 54.4 | 35 | 2.95 | 20 | 2 |
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| 1881 | 50.3 | 142 | 59.7 | 144 | 40.9 | 143 | 2.73 | 22 | 0 |
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| 1880 | 68.4 | 3 | 75.5 | 18 | 61.2 | 2 | 3.87 | 8 | 0 |
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| 1879 | 59 | 88 | 67.2 | 105 | 50.7 | 72 | 1.03 | 73 | 0 |
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| 1878 | 57.5 | 112 | 65.8 | 116 | 49.2 | 94 | 3.67 | 11 | 0 |
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