Every July in Jefferson City, MO from 1895 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 | 79.7 | 30 | 88.7 | 81 | 70.7 | 12 | 2.26 | 89 | 0 |
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| 2025 | 82.1 | 9 | 91.2 | 40 | 73 | 2 | 4.22 | 39 | 0 |
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| 2024 | 78.2 | 57 | 87.4 | 102 | 69.1 | 29 | 5.73 | 16 | 0 |
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| 2023 | 80.5 | 21 | 91.4 | 37 | 69.6 | 23 | 3.16 | 65 | 0 |
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| 2022 | 81.9 | 10 | 92.5 | 25 | 71.3 | 9 | 4.58 | 35 | 0 |
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| 2021 | 78.9 | 43 | 88.1 | 90 | 69.7 | 22 | 2.72 | 76 | 0 |
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| 2020 | 81.1 | 15 | 90.2 | 55 | 72.1 | 6 | 7.10 | 6 | 0 |
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| 2019 | | | | | | | | | 20 |
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| 2018 | 78.6 | 49 | 89 | 78 | 68.3 | 34 | 3.09 | 68 | 0 |
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| 2017 | 80.2 | 25 | 90.2 | 55 | 70.1 | 17 | 3.81 | 47 | 0 |
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| 2016 | 78.8 | 47 | 87.8 | 95 | 69.8 | 20 | 7.99 | 4 | 0 |
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| 2015 | 78.3 | 54 | 86.8 | 108 | 69.8 | 20 | 5.10 | 26 | 0 |
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| 2014 | 73.7 | 122 | 84.4 | 123 | 62.9 | 115 | 2.29 | 88 | 0 |
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| 2013 | 76.2 | 103 | 86.4 | 111 | 66 | 73 | 3.89 | 46 | 0 |
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| 2012 | 84.9 | 5 | 97.7 | 6 | 72.2 | 5 | 1.71 | 105 | 0 |
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| 2011 | 84.8 | 6 | 94.4 | 11 | 75.2 | 1 | 0.97 | 120 | 0 |
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| 2010 | 80.7 | 19 | 89.4 | 64 | 72 | 7 | 5.49 | 18 | 0 |
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| 2009 | 73.8 | 120 | 83.3 | 127 | 64.4 | 98 | 5.36 | 22 | 0 |
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| 2008 | 78.1 | 63 | 87.7 | 98 | 68.5 | 32 | 10.53 | 2 | 0 |
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| 2007 | 77.3 | 85 | 87.9 | 93 | 66.6 | 65 | 0.65 | 122 | 0 |
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| 2006 | 81.2 | 14 | 92.3 | 26 | 70 | 18 | 2.46 | 84 | 1 |
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| 2005 | 79.5 | 34 | 92 | 29 | 66.9 | 60 | 0.06 | 127 | 0 |
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| 2004 | 74.9 | 114 | 84 | 126 | 65.7 | 77 | 6.69 | 10 | 0 |
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| 2003 | 78.2 | 57 | 88.7 | 81 | 67.7 | 45 | 1.15 | 114 | 0 |
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| 2002 | 80.1 | 27 | 90.8 | 47 | 69.4 | 27 | 2.65 | 80 | 0 |
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| 2001 | 79.6 | 33 | 88.7 | 81 | 70.4 | 13 | 4.71 | 33 | 1 |
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| 2000 | 77 | 93 | 86.1 | 112 | 67.8 | 42 | 3.16 | 65 | 0 |
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| 1999 | 80.5 | 21 | 91 | 46 | 69.9 | 19 | 2.03 | 98 | 0 |
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| 1998 | 77.7 | 77 | 85.2 | 119 | 70.2 | 16 | 5.75 | 15 | 1 |
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| 1997 | 77.9 | 68 | 88.7 | 81 | 67 | 54 | | | 1 |
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| 1996 | 75.6 | 108 | 85 | 121 | 66.1 | 69 | 4.93 | 29 | 0 |
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| 1995 | 78.2 | 57 | 88.3 | 88 | 68.2 | 35 | 4.08 | 41 | 0 |
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| 1994 | 76 | 104 | 85.7 | 116 | 66.3 | 68 | 3.49 | 57 | 0 |
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| 1993 | 79.4 | 37 | 87.5 | 100 | 71.3 | 9 | 13.38 | 1 | 0 |
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| 1992 | 76.6 | 96 | 85.9 | 114 | 67.3 | 52 | 5.41 | 21 | 1 |
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| 1991 | 78.5 | 51 | 89.6 | 62 | 67.4 | 49 | 5.46 | 19 | 0 |
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| 1990 | 77.4 | 82 | 86.7 | 109 | 68.1 | 38 | 5.32 | 23 | 0 |
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| 1989 | 77.8 | 72 | 88.6 | 86 | 67 | 54 | 4.93 | 29 | 0 |
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| 1988 | 77.3 | 85 | 88.7 | 81 | 65.9 | 75 | 3.63 | 53 | 0 |
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| 1987 | 77.4 | 82 | 92.1 | 27 | 62.7 | 117 | 4.80 | 31 | 0 |
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| 1986 | 80.2 | 25 | 93.7 | 14 | 66.8 | 61 | 1.55 | 107 | 0 |
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| 1985 | 77.5 | 79 | 89.8 | 58 | 65.3 | 84 | 1.51 | 108 | 0 |
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| 1984 | | | 88.3 | 88 | | | 2.65 | 80 | 6 |
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| 1983 | | | 91.4 | 37 | | | 1.14 | 115 | 7 |
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| 1982 | 77.2 | 88 | 89.2 | 72 | 65.3 | 84 | 3.90 | 44 | 3 |
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| 1981 | 77.8 | 72 | 87.8 | 95 | 67.7 | 45 | 7.89 | 5 | 0 |
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| 1980 | 85 | 4 | 99.4 | 4 | 70.4 | 13 | 1.79 | 102 | 1 |
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| 1979 | 76.9 | 95 | 87.9 | 93 | 65.9 | 75 | 3.68 | 51 | 0 |
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| 1978 | 79.1 | 41 | 89.7 | 60 | 68.7 | 30 | 4.19 | 40 | 1 |
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| 1977 | 78.9 | 43 | 90.4 | 53 | 67.5 | 48 | 1.41 | 111 | 0 |
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| 1975 | | | 91.8 | 32 | | | 0.22 | 126 | 9 |
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| 1974 | 79.4 | 37 | 95.1 | 10 | 63.8 | 104 | 0.78 | 121 | 3 |
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| 1973 | 77.6 | 78 | 90.8 | 47 | 64.4 | 98 | 6.01 | 13 | 0 |
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| 1972 | 77.1 | 90 | 90.7 | 51 | 63.5 | 107 | 2.13 | 93 | 0 |
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| 1970 | 76.5 | 98 | 91.3 | 39 | 61.6 | 121 | 1.19 | 113 | 0 |
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| 1969 | 80 | 28 | 92.1 | 27 | 68 | 40 | 3.74 | 49 | 0 |
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| 1968 | 76.3 | 102 | 89.3 | 67 | 63.4 | 109 | 3.42 | 60 | 0 |
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| 1967 | 72.8 | 124 | 87.4 | 102 | 58.2 | 125 | 3.60 | 55 | 0 |
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| 1966 | 81.5 | 13 | 96 | 7 | 67 | 54 | 2.07 | 95 | 1 |
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| 1965 | 75.2 | 111 | 86.9 | 107 | 63.4 | 109 | 4.62 | 34 | 0 |
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| 1964 | 78.2 | 57 | 91.7 | 33 | 64.8 | 94 | 2.32 | 86 | 1 |
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| 1963 | 78.1 | 63 | 91.5 | 36 | 64.6 | 95 | 2.04 | 97 | 0 |
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| 1962 | 77 | 93 | 91.1 | 42 | 62.8 | 116 | 1.14 | 115 | 0 |
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| 1961 | 76 | 104 | 87.6 | 99 | 64.3 | 101 | 5.29 | 25 | 0 |
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| 1960 | 74.8 | 115 | 87.5 | 100 | 62 | 119 | 3.73 | 50 | 0 |
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| 1959 | 75.1 | 112 | 89.3 | 67 | 60.9 | 123 | 2.95 | 71 | 0 |
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| 1958 | 75.7 | 106 | 86.5 | 110 | 64.9 | 91 | 6.72 | 9 | 1 |
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| 1957 | 78.5 | 51 | 91.1 | 42 | 66 | 73 | 5.44 | 20 | 1 |
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| 1956 | 77.8 | 72 | 89.3 | 67 | 66.8 | 61 | 6.81 | 8 | 1 |
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| 1955 | 81.8 | 11 | 92.7 | 21 | 70.8 | 11 | 3.23 | 63 | 0 |
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| 1954 | 84.2 | 7 | 98.2 | 5 | 70.3 | 15 | 1.81 | 101 | 0 |
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| 1953 | 79.2 | 40 | 93.5 | 16 | 64.9 | 91 | 1.11 | 117 | 0 |
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| 1952 | 79.8 | 29 | 93.6 | 15 | 66.1 | 69 | 2.83 | 72 | 0 |
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| 1951 | | | | | | | | | 21 |
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| 1950 | 72.2 | 125 | 84.4 | 123 | 60.1 | 124 | 3.45 | 58 | 0 |
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| 1949 | 78.9 | 43 | 88.4 | 87 | 69.5 | 25 | 3.42 | 60 | 0 |
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| 1948 | 76.5 | 98 | 87.2 | 104 | 65.7 | 77 | 5.32 | 23 | 0 |
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| 1947 | 74 | 118 | 86 | 113 | 61.9 | 120 | 1.85 | 100 | 0 |
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| 1946 | 78.7 | 48 | 93.5 | 16 | 63.9 | 103 | 3.63 | 53 | 0 |
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| 1945 | 74 | 118 | 85 | 121 | 63.3 | 111 | 3.28 | 62 | 1 |
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| 1944 | 78.6 | 49 | 92.6 | 23 | 64.6 | 95 | 3.43 | 59 | 0 |
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| 1943 | 79.3 | 39 | 90.8 | 47 | 67.8 | 42 | 3.20 | 64 | 0 |
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| 1942 | 77.2 | 88 | 89.4 | 64 | 64.9 | 91 | 6.00 | 14 | 0 |
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| 1941 | 77.5 | 79 | 89.8 | 58 | 65.2 | 86 | 4.51 | 36 | 0 |
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| 1940 | 76.6 | 96 | 90.5 | 52 | 62.7 | 117 | 0.50 | 125 | 0 |
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| 1939 | 79 | 42 | 91.7 | 33 | 66.4 | 67 | 0.99 | 119 | 0 |
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| 1938 | 78 | 67 | 89 | 78 | 67 | 54 | 3.79 | 48 | 0 |
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| 1937 | 77.5 | 79 | 89.4 | 64 | 65.5 | 80 | 1.75 | 104 | 0 |
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| 1936 | 86.7 | 3 | 101.6 | 3 | 71.8 | 8 | 0.51 | 124 | 0 |
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| 1935 | 79.5 | 34 | 89.5 | 63 | 69.5 | 25 | 2.14 | 92 | 0 |
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| 1934 | 87.7 | 1 | 102.2 | 2 | 72.9 | 3 | 1.79 | 102 | 1 |
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| 1933 | 79.7 | 30 | 91.7 | 33 | 67.6 | 47 | 3.02 | 70 | 0 |
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| 1932 | 80.8 | 16 | 93.3 | 18 | 68.2 | 35 | 2.68 | 78 | 0 |
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| 1931 | 80.8 | 16 | 92.9 | 19 | 68.6 | 31 | 4.01 | 42 | 1 |
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| 1930 | 81.7 | 12 | 95.6 | 8 | 67.8 | 42 | 2.72 | 76 | 0 |
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| 1929 | 80.5 | 21 | 92.9 | 19 | 68.1 | 38 | 2.18 | 91 | 0 |
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| 1928 | 77.9 | 68 | 87.8 | 95 | 68 | 40 | 3.10 | 67 | 0 |
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| 1927 | 75.3 | 110 | 85.6 | 117 | 65 | 89 | 5.10 | 26 | 0 |
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| 1926 | 77.9 | 68 | 89.3 | 67 | 66.7 | 64 | 4.74 | 32 | 1 |
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| 1925 | 78.1 | 63 | 89.2 | 72 | 67 | 54 | 1.87 | 99 | 0 |
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| 1924 | 73.8 | 120 | 84.1 | 125 | 63.3 | 111 | 4.41 | 37 | 3 |
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| 1923 | 78.3 | 54 | 89.2 | 72 | 67.4 | 49 | 6.21 | 12 | 0 |
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| 1922 | 77.1 | 90 | 88.1 | 90 | 66.1 | 69 | 3.52 | 56 | 0 |
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| 1921 | 80.6 | 20 | 92.7 | 21 | 68.5 | 32 | 0.65 | 122 | 0 |
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| 1920 | 77.1 | 90 | 89.1 | 76 | 65.1 | 87 | 2.32 | 86 | 1 |
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| 1919 | 79.5 | 34 | 91.9 | 30 | 67 | 54 | 1.37 | 112 | 0 |
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| 1918 | 77.8 | 72 | 91.2 | 40 | 64.5 | 97 | 1.47 | 109 | 0 |
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| 1917 | 78.3 | 54 | 90.4 | 53 | 66.1 | 69 | 2.58 | 83 | 0 |
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| 1916 | 82.3 | 8 | 95.5 | 9 | 69.2 | 28 | 3.09 | 68 | 1 |
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| 1915 | 75 | 113 | 85.1 | 120 | 65 | 89 | 2.05 | 96 | 1 |
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| 1914 | 80.4 | 24 | 94.1 | 12 | 66.6 | 65 | 2.13 | 93 | 0 |
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| 1913 | 79.7 | 30 | 94 | 13 | 65.5 | 80 | 2.77 | 74 | 0 |
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| 1912 | 78.2 | 57 | 90.8 | 47 | 65.5 | 80 | 2.42 | 85 | 0 |
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| 1911 | 77.9 | 68 | 92.6 | 23 | 63.3 | 111 | 1.62 | 106 | 0 |
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| 1910 | 75.7 | 106 | 87.1 | 106 | 64.4 | 98 | 7.00 | 7 | 0 |
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| 1909 | 76.5 | 98 | 88.9 | 80 | 64.2 | 102 | 2.75 | 75 | 0 |
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| 1908 | 76.4 | 101 | 89.3 | 67 | 63.5 | 107 | 2.66 | 79 | 0 |
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| 1907 | 77.3 | 85 | 89.2 | 72 | 65.5 | 80 | 3.64 | 52 | 0 |
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| 1906 | 74.4 | 117 | 87.2 | 104 | 61.6 | 121 | 1.45 | 110 | 0 |
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| 1905 | 73.1 | 123 | 83.2 | 128 | 63 | 114 | 4.25 | 38 | 1 |
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| 1904 | 74.8 | 115 | 85.9 | 114 | 63.6 | 106 | 2.59 | 82 | 0 |
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| 1903 | 78.2 | 57 | 89.1 | 76 | 67.3 | 52 | 2.26 | 89 | 0 |
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| 1902 | 78.5 | 51 | 90.2 | 55 | 66.8 | 61 | 4.97 | 28 | 3 |
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| 1901 | 87.4 | 2 | 102.4 | 1 | 72.5 | 4 | 1.06 | 118 | 1 |
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| 1900 | 78.1 | 63 | 91.1 | 42 | 65.1 | 87 | 6.31 | 11 | 1 |
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| 1899 | 77.4 | 82 | 91.1 | 42 | 63.8 | 104 | 2.82 | 73 | 0 |
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| 1898 | 77.8 | 72 | 88.1 | 90 | 67.4 | 49 | 3.97 | 43 | 0 |
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| 1897 | 80.8 | 16 | 91.9 | 30 | 69.6 | 23 | 3.90 | 44 | 0 |
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| 1896 | 78.9 | 43 | 89.7 | 60 | 68.2 | 35 | 5.55 | 17 | 0 |
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| 1895 | 75.6 | 108 | 85.5 | 118 | 65.7 | 77 | 8.90 | 3 | 0 |
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