Every March in Del Rio, TX from 1906 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 | 71.6 | 3 | 84.2 | 3 | 59.1 | 3 | 2.92 | 4 | 0 |
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| 2025 | 72.2 | 2 | 86.6 | 1 | 57.9 | 5 | 0.17 | 89 | 0 |
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| 2024 | 70 | 5 | 82.4 | 6 | 57.6 | 8 | 0.07 | 104 | 0 |
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| 2023 | 69.5 | 7 | 80.9 | 13 | 58.1 | 4 | 1.85 | 22 | 0 |
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| 2022 | 65.8 | 42 | 80.8 | 14 | 50.7 | 75 | trace | 116 | 0 |
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| 2021 | 68.2 | 18 | 81.2 | 11 | 55.1 | 26 | 0.21 | 87 | 0 |
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| 2020 | 70.9 | 4 | 81.4 | 10 | 60.3 | 1 | 3.09 | 3 | 0 |
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| 2019 | 62.3 | 86 | 72 | 101 | 52.6 | 54 | 0.41 | 77 | 0 |
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| 2018 | 68.3 | 17 | 81 | 12 | 55.7 | 23 | 0.13 | 97 | 0 |
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| 2017 | 68.6 | 15 | 79.4 | 31 | 57.7 | 6 | 0.51 | 68 | 0 |
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| 2016 | 66.2 | 38 | 78.2 | 41 | 54.4 | 32 | 2.08 | 16 | 2 |
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| 2015 | 62.6 | 79 | 73.3 | 94 | 51.9 | 62 | 2.21 | 13 | 0 |
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| 2014 | 63.2 | 72 | 75.7 | 70 | 50.7 | 75 | 0.32 | 83 | 0 |
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| 2013 | 66.6 | 32 | 80.7 | 15 | 52.5 | 56 | 0.06 | 106 | 0 |
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| 2012 | 67.7 | 20 | 79.5 | 30 | 55.9 | 20 | 1.31 | 33 | 0 |
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| 2011 | 70 | 5 | 82.8 | 5 | 57.3 | 12 | 0.04 | 111 | 0 |
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| 2010 | 61.2 | 96 | 74.7 | 80 | 47.6 | 105 | 1.16 | 36 | 0 |
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| 2009 | 65.4 | 47 | 77.7 | 45 | 53.1 | 48 | 1.52 | 28 | 0 |
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| 2008 | 65.2 | 50 | 79.4 | 31 | 51 | 70 | 0.57 | 62 | 0 |
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| 2007 | 67 | 27 | 78 | 42 | 56 | 18 | 2.36 | 11 | 0 |
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| 2006 | 67.9 | 19 | 79.8 | 27 | 56 | 18 | 0.16 | 92 | 0 |
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| 2005 | 62.6 | 79 | 75.6 | 71 | 49.5 | 93 | 1.74 | 23 | 0 |
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| 2004 | 67.3 | 23 | 77 | 54 | 57.6 | 8 | 3.48 | 1 | 0 |
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| 2003 | 65.3 | 48 | 77 | 54 | 53.6 | 42 | 0.68 | 55 | 0 |
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| 2002 | 63.9 | 62 | 76.7 | 58 | 51 | 70 | 0.10 | 100 | 0 |
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| 2001 | 60.2 | 102 | 70.8 | 104 | 49.6 | 90 | 0.90 | 46 | 0 |
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| 2000 | 69.3 | 8 | 82 | 7 | 56.6 | 16 | 0.28 | 85 | 0 |
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| 1999 | 65.1 | 52 | 76.6 | 60 | 53.6 | 42 | 1.89 | 20 | 0 |
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| 1998 | 62.8 | 76 | 75.3 | 76 | 50.3 | 80 | 1.06 | 40 | 0 |
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| 1997 | 64.7 | 56 | 75.5 | 73 | 53.9 | 38 | 2.77 | 5 | 0 |
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| 1996 | 61.2 | 96 | 75 | 77 | 47.4 | 108 | 0.02 | 113 | 0 |
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| 1995 | 62.5 | 82 | 74 | 86 | 51.1 | 69 | 1.06 | 40 | 0 |
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| 1994 | 65.7 | 43 | 77 | 54 | 54.5 | 29 | 2.49 | 9 | 0 |
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| 1993 | 65 | 53 | 77.9 | 43 | 52.1 | 59 | 0.47 | 73 | 0 |
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| 1992 | 64.4 | 58 | 76 | 68 | 52.7 | 53 | 2.57 | 7 | 0 |
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| 1991 | 66.6 | 32 | 80.5 | 18 | 52.8 | 51 | 0.04 | 111 | 0 |
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| 1990 | 62.4 | 84 | 72.2 | 100 | 52.5 | 56 | 3.20 | 2 | 0 |
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| 1989 | 62.7 | 78 | 76.7 | 58 | 48.7 | 100 | 0.92 | 44 | 0 |
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| 1988 | 63.5 | 68 | 77.3 | 49 | 49.6 | 90 | 0.15 | 93 | 0 |
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| 1987 | 57.5 | 115 | 69.2 | 114 | 45.7 | 116 | 0.77 | 51 | 0 |
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| 1986 | 66.7 | 31 | 80.2 | 20 | 53.3 | 46 | 0.02 | 113 | 0 |
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| 1985 | 64.2 | 59 | 73.9 | 88 | 54.5 | 29 | 0.81 | 49 | 0 |
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| 1984 | 65.7 | 43 | 78.4 | 39 | 53 | 49 | 0.06 | 106 | 0 |
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| 1983 | 62.5 | 82 | 74.7 | 80 | 50.3 | 80 | 1.07 | 39 | 0 |
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| 1982 | 64.9 | 54 | 75.8 | 69 | 54 | 35 | 0.13 | 97 | 0 |
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| 1981 | 61.6 | 94 | 72.7 | 97 | 50.5 | 78 | 1.64 | 25 | 0 |
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| 1980 | 63.5 | 68 | 76.1 | 67 | 51 | 70 | 0.30 | 84 | 0 |
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| 1979 | 62.9 | 75 | 74.2 | 84 | 51.5 | 66 | 2.66 | 6 | 0 |
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| 1978 | 63.4 | 71 | 77.5 | 47 | 49.3 | 94 | 0.15 | 93 | 0 |
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| 1977 | 62.8 | 76 | 75.6 | 71 | 50 | 86 | 0.87 | 48 | 0 |
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| 1976 | 66.4 | 36 | 78.5 | 38 | 54.4 | 32 | 0.14 | 96 | 0 |
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| 1975 | 63.8 | 64 | 77.3 | 49 | 50.2 | 84 | 0.06 | 106 | 0 |
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| 1974 | 68.8 | 10 | 80.7 | 15 | 56.9 | 14 | 1.39 | 31 | 0 |
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| 1973 | 65.9 | 40 | 79 | 34 | 52.8 | 51 | 1.19 | 34 | 0 |
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| 1972 | 68.8 | 10 | 81.8 | 8 | 55.8 | 22 | 0.52 | 67 | 0 |
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| 1971 | 64.9 | 54 | 80.5 | 18 | 49.3 | 94 | trace | 116 | 0 |
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| 1970 | 57.4 | 117 | 69.7 | 109 | 45.2 | 118 | 0.57 | 62 | 0 |
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| 1969 | 57.2 | 119 | 69 | 115 | 45.5 | 117 | 0.60 | 58 | 0 |
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| 1968 | 58 | 112 | 68.7 | 116 | 47.2 | 111 | 1.15 | 37 | 0 |
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| 1967 | 68.8 | 10 | 81.7 | 9 | 55.9 | 20 | 0.58 | 60 | 0 |
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| 1966 | 62.3 | 86 | 73.4 | 92 | 51.2 | 68 | 0.48 | 71 | 0 |
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| 1965 | 57.4 | 117 | 69.5 | 112 | 45.2 | 118 | 0.33 | 82 | 0 |
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| 1964 | 63.8 | 64 | 76.6 | 60 | 51 | 70 | 0.45 | 74 | 0 |
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| 1963 | 66.8 | 29 | 79.8 | 27 | 53.9 | 38 | trace | 116 | 0 |
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| 1962 | 61.4 | 95 | 73.8 | 90 | 48.9 | 99 | 0.17 | 89 | 0 |
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| 1961 | 66.2 | 38 | 79 | 34 | 53.4 | 44 | 0.08 | 103 | 0 |
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| 1960 | 58.8 | 110 | 70.3 | 106 | 47.2 | 111 | 0.50 | 70 | 0 |
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| 1959 | 62.4 | 84 | 75.5 | 73 | 49.3 | 94 | trace | 116 | 0 |
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| 1958 | 57.9 | 113 | 67.4 | 119 | 48.4 | 101 | 1.19 | 34 | 0 |
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| 1957 | 64.1 | 60 | 76.2 | 66 | 52 | 60 | 1.63 | 26 | 0 |
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| 1956 | 65.2 | 50 | 79.9 | 23 | 50.4 | 79 | trace | 116 | 0 |
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| 1955 | 64.6 | 57 | 77.9 | 43 | 51.4 | 67 | 0.71 | 54 | 0 |
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| 1954 | 63.5 | 68 | 77.3 | 49 | 49.7 | 87 | trace | 116 | 0 |
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| 1953 | 69 | 9 | 80.2 | 20 | 57.7 | 6 | 1.70 | 24 | 0 |
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| 1952 | 61.8 | 93 | 73.3 | 94 | 50.3 | 80 | 0.38 | 78 | 0 |
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| 1951 | 64.1 | 60 | 76.5 | 63 | 51.7 | 64 | 1.38 | 32 | 0 |
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| 1950 | 63.9 | 62 | 76.3 | 65 | 51.6 | 65 | 0.07 | 104 | 0 |
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| 1949 | 63.7 | 66 | 73.4 | 92 | 54 | 35 | 0.35 | 79 | 0 |
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| 1948 | 62.2 | 89 | 74.3 | 82 | 50.1 | 85 | 0.11 | 99 | 0 |
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| 1947 | 59.3 | 108 | 70.8 | 104 | 47.7 | 103 | 1.05 | 42 | 0 |
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| 1946 | 66.6 | 32 | 79.8 | 27 | 53.4 | 44 | 0.17 | 89 | 0 |
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| 1945 | 67.1 | 26 | 77.2 | 53 | 57 | 13 | 2.53 | 8 | 0 |
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| 1944 | 63.2 | 72 | 74.1 | 85 | 52.2 | 58 | 0.45 | 74 | 0 |
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| 1943 | 62 | 91 | 74.3 | 82 | 49.7 | 87 | 0.57 | 62 | 0 |
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| 1942 | 62.6 | 79 | 75.5 | 73 | 49.7 | 87 | 0.01 | 115 | 0 |
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| 1941 | 57.5 | 115 | 67.4 | 119 | 47.7 | 103 | 1.89 | 20 | 0 |
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| 1940 | 63.7 | 66 | 74.8 | 78 | 52.6 | 54 | 2.21 | 13 | 0 |
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| 1939 | 66.5 | 35 | 77.7 | 45 | 55.2 | 25 | 0.75 | 52 | 0 |
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| 1938 | 68.7 | 13 | 79.9 | 23 | 57.5 | 11 | 0.35 | 79 | 0 |
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| 1937 | 59.4 | 107 | 69.7 | 109 | 49 | 98 | 0.92 | 44 | 0 |
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| 1936 | 65.3 | 48 | 77.3 | 49 | 53.3 | 46 | 0.89 | 47 | 0 |
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| 1935 | 68.5 | 16 | 79.3 | 33 | 57.6 | 8 | 2.34 | 12 | 0 |
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| 1934 | 61.9 | 92 | 76.5 | 63 | 47.4 | 108 | 0.59 | 59 | 0 |
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| 1933 | 65.5 | 46 | 76.6 | 60 | 54.3 | 34 | 0.10 | 100 | 0 |
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| 1932 | 59 | 109 | 72 | 101 | 46.1 | 115 | 1.03 | 43 | 0 |
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| 1931 | 57.2 | 119 | 69.6 | 111 | 44.9 | 120 | 0.66 | 56 | 0 |
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| 1930 | 59.7 | 105 | 70.1 | 107 | 49.3 | 94 | 1.48 | 29 | 0 |
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| 1929 | 65.7 | 43 | 77.4 | 48 | 54 | 35 | 0.72 | 53 | 0 |
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| 1928 | 66.4 | 36 | 79 | 34 | 53.8 | 40 | 0.35 | 79 | 0 |
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| 1927 | 63.1 | 74 | 73.3 | 94 | 52.9 | 50 | 0.51 | 68 | 0 |
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| 1926 | 60.2 | 102 | 68.4 | 117 | 52 | 60 | 1.92 | 18 | 0 |
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| 1925 | 67.5 | 21 | 78.7 | 37 | 56.4 | 17 | 0.42 | 76 | 0 |
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| 1924 | 59.5 | 106 | 69.4 | 113 | 49.6 | 90 | 0.55 | 65 | 0 |
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| 1923 | 57.9 | 113 | 68.2 | 118 | 47.6 | 105 | 2.47 | 10 | 0 |
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| 1922 | 62.1 | 90 | 74 | 86 | 50.3 | 80 | 0.48 | 71 | 0 |
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| 1921 | 66.8 | 29 | 76.9 | 57 | 56.8 | 15 | 1.92 | 18 | 0 |
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| 1920 | 59.8 | 104 | 72.4 | 99 | 47.2 | 111 | 0.15 | 93 | 0 |
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| 1919 | 61.1 | 98 | 71.4 | 103 | 50.8 | 74 | 1.42 | 30 | 0 |
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| 1918 | 67.4 | 22 | 79.9 | 23 | 54.9 | 27 | 0.06 | 106 | 0 |
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| 1917 | 62.3 | 86 | 73.9 | 88 | 50.7 | 75 | 0.05 | 110 | 0 |
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| 1916 | 68.7 | 13 | 82.9 | 4 | 54.6 | 28 | 0.78 | 50 | 0 |
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| 1915 | 52.4 | 121 | 63.1 | 121 | 41.6 | 121 | 1.09 | 38 | 0 |
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| 1914 | 60.4 | 100 | 72.6 | 98 | 48.2 | 102 | 0.62 | 57 | 0 |
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| 1913 | 60.4 | 100 | 73.8 | 90 | 47 | 114 | 0.20 | 88 | 0 |
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| 1912 | 58.7 | 111 | 69.9 | 108 | 47.5 | 107 | 0.58 | 60 | 0 |
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| 1911 | 66.9 | 28 | 78.3 | 40 | 55.5 | 24 | 1.59 | 27 | 0 |
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| 1910 | 67.2 | 24 | 79.9 | 23 | 54.5 | 29 | 2.06 | 17 | 0 |
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| 1909 | 65.9 | 40 | 80 | 22 | 51.8 | 63 | 2.18 | 15 | 0 |
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| 1908 | 67.2 | 24 | 80.6 | 17 | 53.7 | 41 | 0.53 | 66 | 0 |
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| 1907 | 73.4 | 1 | 86.6 | 1 | 60.1 | 2 | 0.10 | 100 | 0 |
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| 1906 | 61 | 99 | 74.8 | 78 | 47.3 | 110 | 0.24 | 86 | 0 |
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