Every August in Ukiah, CA from 1893 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 | 75.7 | 11 | 95.5 | 21 | 55.8 | 20 | trace | 37 | 0 |
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| 2025 | 75.9 | 9 | 95.3 | 25 | 56.5 | 16 | 0.00 | 54 | 0 |
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| 2024 | 75.5 | 12 | 94.3 | 40 | 56.7 | 12 | 0.03 | 25 | 0 |
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| 2023 | 76.4 | 8 | 94 | 44 | 58.9 | 2 | 0.01 | 31 | 0 |
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| 2022 | 76.8 | 6 | 96.3 | 11 | 57.3 | 5 | trace | 37 | 0 |
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| 2021 | 77.6 | 3 | 98 | 4 | 57.3 | 5 | 0.00 | 54 | 0 |
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| 2020 | 78.2 | 1 | 96.8 | 8 | 59.5 | 1 | 0.08 | 16 | 0 |
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| 2019 | 76.5 | 7 | 94.6 | 34 | 58.5 | 3 | 0.07 | 18 | 0 |
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| 2018 | 73.5 | 45 | 92.5 | 75 | 54.5 | 34 | 0.00 | 54 | 0 |
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| 2017 | 77.3 | 5 | 97.3 | 7 | 57.3 | 5 | trace | 37 | 0 |
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| 2016 | 73.8 | 34 | 93.5 | 54 | 54.1 | 48 | 0.00 | 54 | 0 |
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| 2015 | 73.3 | 49 | 91.4 | 87 | 55.1 | 29 | 0.01 | 31 | 0 |
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| 2014 | 74.6 | 24 | 92.7 | 68 | 56.6 | 14 | 0.01 | 31 | 0 |
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| 2013 | 72.7 | 65 | 90.8 | 95 | 54.5 | 34 | trace | 37 | 1 |
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| 2012 | 75 | 16 | 96.3 | 11 | 53.6 | 57 | trace | 37 | 0 |
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| 2011 | 73.6 | 42 | 93.6 | 50 | 53.7 | 53 | trace | 37 | 0 |
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| 2010 | 71.5 | 92 | 91.3 | 88 | 51.7 | 82 | trace | 37 | 0 |
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| 2009 | 73 | 61 | 92.6 | 70 | 53.5 | 59 | 0.00 | 54 | 0 |
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| 2008 | 74.5 | 25 | 93.5 | 54 | 55.5 | 23 | 0.00 | 54 | 0 |
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| 2007 | 73.3 | 49 | 92.1 | 80 | 54.5 | 34 | trace | 37 | 0 |
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| 2006 | 72.3 | 74 | 91.3 | 88 | 53.2 | 63 | trace | 37 | 1 |
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| 2005 | 73.9 | 32 | 94.5 | 36 | 53.4 | 62 | 0.00 | 54 | 0 |
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| 2004 | 73.2 | 53 | 91.6 | 86 | 54.8 | 31 | 0.00 | 54 | 0 |
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| 2003 | 72 | 77 | 89.3 | 112 | 54.6 | 33 | trace | 37 | 0 |
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| 2002 | 72.8 | 63 | 93.1 | 63 | 52.6 | 75 | 0.00 | 54 | 0 |
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| 2001 | 73.4 | 46 | 92.4 | 77 | 54.3 | 42 | 0.00 | 54 | 0 |
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| 2000 | | | | | | | | | 4 |
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| 1999 | 71 | 100 | 86.2 | 129 | 55.7 | 22 | 0.51 | 7 | 0 |
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| 1998 | 75 | 16 | 93.2 | 60 | 56.9 | 11 | 0.00 | 54 | 1 |
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| 1997 | 71.4 | 94 | 87.5 | 122 | 55.5 | 23 | 0.90 | 4 | 2 |
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| 1996 | 74.2 | 29 | 92.9 | 65 | 55.5 | 23 | 0.00 | 54 | 0 |
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| 1995 | 72.7 | 65 | 90.9 | 93 | 54.4 | 38 | 0.00 | 54 | 1 |
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| 1994 | 70.9 | 101 | 89 | 114 | 52.8 | 70 | 0.00 | 54 | 0 |
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| 1993 | 71.7 | 85 | 88.7 | 116 | 54.8 | 31 | trace | 37 | 1 |
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| 1992 | 74.8 | 20 | 93.2 | 60 | 56.4 | 17 | 0.00 | 54 | 0 |
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| 1991 | 70.9 | 101 | 87.3 | 123 | 54.4 | 38 | 0.00 | 54 | 1 |
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| 1990 | 73 | 61 | 88.2 | 120 | 57.7 | 4 | 0.00 | 54 | 1 |
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| 1988 | 73.6 | 42 | 91.8 | 83 | 55.3 | 28 | 0.00 | 54 | 0 |
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| 1987 | 75.3 | 13 | 94.7 | 32 | 55.9 | 19 | 0.00 | 54 | 0 |
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| 1986 | 75.9 | 9 | 94.6 | 34 | 57.2 | 10 | 0.00 | 54 | 1 |
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| 1985 | 71.9 | 81 | 89.6 | 109 | 54.3 | 42 | 0.00 | 54 | 1 |
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| 1984 | 73.7 | 40 | 90.8 | 95 | 56.7 | 12 | 0.03 | 25 | 0 |
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| 1983 | 73.2 | 53 | 89.1 | 113 | 57.3 | 5 | 1.03 | 3 | 0 |
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| 1982 | 72.6 | 69 | 90.9 | 93 | 54.4 | 38 | 0.03 | 25 | 1 |
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| 1981 | 73.8 | 34 | 93.3 | 59 | 54.3 | 42 | 0.00 | 54 | 0 |
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| 1980 | 72 | 77 | 91.2 | 90 | 52.8 | 70 | 0.00 | 54 | 0 |
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| 1979 | 71.3 | 95 | 88.1 | 121 | 54.5 | 34 | 0.00 | 54 | 0 |
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| 1978 | 74.4 | 26 | 92.6 | 70 | 56.1 | 18 | 0.01 | 31 | 0 |
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| 1977 | 74.4 | 26 | 93.4 | 57 | 55.5 | 23 | 0.18 | 13 | 0 |
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| 1976 | 69.2 | 125 | 85.2 | 130 | 53.2 | 63 | 1.16 | 2 | 0 |
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| 1975 | 72.2 | 75 | 91 | 91 | 53.5 | 59 | 0.14 | 14 | 0 |
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| 1974 | 74.7 | 22 | 94 | 44 | 55.4 | 27 | 0.10 | 15 | 0 |
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| 1973 | 71.9 | 81 | 92.2 | 79 | 51.5 | 85 | 0.00 | 54 | 0 |
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| 1972 | 73.8 | 34 | 93.6 | 50 | 54 | 51 | 0.05 | 20 | 0 |
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| 1971 | 74 | 31 | 93.6 | 50 | 54.4 | 38 | 0.08 | 16 | 0 |
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| 1970 | 73.2 | 53 | 95.2 | 26 | 51.3 | 91 | 0.00 | 54 | 0 |
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| 1969 | 74.9 | 18 | 95.6 | 18 | 54.1 | 48 | 0.00 | 54 | 0 |
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| 1968 | 70.7 | 106 | 87.3 | 123 | 54.1 | 48 | 1.35 | 1 | 0 |
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| 1967 | 77.5 | 4 | 99.3 | 1 | 55.8 | 20 | 0.03 | 25 | 0 |
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| 1966 | 73.4 | 46 | 92.8 | 67 | 53.9 | 52 | 0.34 | 10 | 0 |
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| 1965 | 72.6 | 69 | 90.1 | 104 | 55.1 | 29 | 0.57 | 6 | 0 |
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| 1964 | 73.1 | 56 | 92.5 | 75 | 53.7 | 53 | 0.00 | 54 | 0 |
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| 1963 | 71.8 | 83 | 90.5 | 101 | 53.2 | 63 | 0.00 | 54 | 0 |
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| 1962 | 72.4 | 71 | 90.6 | 100 | 54.2 | 45 | 0.20 | 12 | 0 |
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| 1961 | 75.3 | 13 | 94 | 44 | 56.6 | 14 | 0.05 | 20 | 0 |
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| 1960 | 73.8 | 34 | 94.8 | 30 | 52.7 | 74 | 0.00 | 54 | 0 |
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| 1959 | 73.9 | 32 | 93.5 | 54 | 54.2 | 45 | 0.41 | 8 | 0 |
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| 1958 | 78 | 2 | 98.8 | 2 | 57.3 | 5 | 0.01 | 31 | 0 |
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| 1957 | 70.8 | 104 | 90.1 | 104 | 51.5 | 85 | 0.00 | 54 | 0 |
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| 1956 | 70.5 | 108 | 90.8 | 95 | 50.3 | 103 | 0.00 | 54 | 0 |
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| 1955 | 74.9 | 18 | 98 | 4 | 51.7 | 82 | 0.00 | 54 | 0 |
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| 1954 | 70.1 | 119 | 86.5 | 128 | 53.6 | 57 | 0.89 | 5 | 0 |
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| 1953 | 70.3 | 116 | 87.3 | 123 | 53 | 67 | 0.24 | 11 | 1 |
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| 1952 | 72.8 | 63 | 94.1 | 43 | 51.4 | 90 | 0.00 | 54 | 0 |
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| 1951 | 73.8 | 34 | 94.8 | 30 | 52.8 | 70 | 0.05 | 20 | 0 |
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| 1950 | 75.1 | 15 | 96.6 | 10 | 53.7 | 53 | 0.00 | 54 | 0 |
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| 1949 | 70.1 | 119 | 88.9 | 115 | 51.2 | 95 | 0.00 | 54 | 0 |
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| 1948 | 70.8 | 104 | 90.3 | 103 | 51.3 | 91 | 0.00 | 54 | 0 |
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| 1947 | 70.5 | 108 | 89.7 | 108 | 51.3 | 91 | 0.00 | 54 | 0 |
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| 1946 | 73.1 | 56 | 94.9 | 29 | 51.3 | 91 | 0.00 | 54 | 0 |
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| 1945 | 71.7 | 85 | 92.3 | 78 | 51 | 97 | 0.00 | 54 | 0 |
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| 1944 | 71.7 | 85 | 92.9 | 65 | 50.5 | 101 | trace | 37 | 0 |
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| 1943 | 70.2 | 118 | 89.6 | 109 | 50.9 | 98 | 0.00 | 54 | 0 |
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| 1942 | 73.7 | 40 | 95.4 | 22 | 52 | 79 | 0.00 | 54 | 0 |
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| 1941 | 69.3 | 124 | 87 | 126 | 51.5 | 85 | trace | 37 | 0 |
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| 1940 | 72.7 | 65 | 93.9 | 48 | 51.5 | 85 | 0.00 | 54 | 0 |
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| 1939 | 72.4 | 71 | 93.4 | 57 | 51.5 | 85 | 0.00 | 54 | 0 |
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| 1938 | 71.1 | 98 | 91.7 | 85 | 50.6 | 100 | 0.00 | 54 | 0 |
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| 1937 | 73.3 | 49 | 93.8 | 49 | 52.8 | 70 | 0.00 | 54 | 0 |
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| 1936 | 74.8 | 20 | 95.4 | 22 | 54.2 | 45 | trace | 37 | 0 |
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| 1935 | 74.2 | 29 | 95.9 | 14 | 52.4 | 76 | 0.01 | 31 | 0 |
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| 1934 | 73.8 | 34 | 94.2 | 42 | 53.5 | 59 | 0.00 | 54 | 0 |
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| 1933 | 74.3 | 28 | 95.7 | 16 | 53 | 67 | 0.00 | 54 | 0 |
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| 1932 | 73.4 | 46 | 95 | 28 | 51.8 | 80 | 0.00 | 54 | 0 |
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| 1931 | 73.6 | 42 | 98 | 4 | 49.4 | 113 | 0.00 | 54 | 1 |
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| 1930 | 71.3 | 95 | 92.7 | 68 | 49.8 | 106 | 0.00 | 54 | 0 |
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| 1929 | 72.4 | 71 | 95.4 | 22 | 49.4 | 113 | 0.00 | 54 | 0 |
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| 1928 | 72 | 77 | 95.2 | 26 | 48.7 | 119 | 0.00 | 54 | 0 |
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| 1927 | 70.6 | 107 | 92.6 | 70 | 48.7 | 119 | 0.00 | 54 | 0 |
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| 1926 | 71.6 | 90 | 93.1 | 63 | 50.1 | 105 | trace | 37 | 0 |
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| 1925 | 70.1 | 119 | 90.7 | 98 | 49.4 | 113 | 0.05 | 20 | 0 |
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| 1924 | 72 | 77 | 96 | 13 | 48 | 123 | 0.00 | 54 | 0 |
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| 1923 | 69.2 | 125 | 88.7 | 116 | 49.7 | 109 | 0.07 | 18 | 0 |
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| 1922 | 69 | 127 | 91 | 91 | 47.1 | 128 | 0.00 | 54 | 0 |
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| 1921 | 69 | 127 | 91.9 | 81 | 46.2 | 130 | 0.00 | 54 | 0 |
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| 1920 | 71.7 | 85 | 93.6 | 50 | 49.7 | 109 | 0.00 | 54 | 0 |
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| 1919 | 71.3 | 95 | 94.7 | 32 | 48.4 | 121 | 0.00 | 54 | 1 |
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| 1918 | 70.4 | 113 | 92.6 | 70 | 48.1 | 122 | 0.00 | 54 | 0 |
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| 1917 | 71.8 | 83 | 94 | 44 | 49.6 | 111 | 0.00 | 54 | 0 |
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| 1916 | 70.9 | 101 | 92.6 | 70 | 49.2 | 116 | 0.41 | 8 | 0 |
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| 1915 | 73.1 | 56 | 94.4 | 38 | 51.8 | 80 | 0.00 | 54 | 0 |
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| 1914 | 72.1 | 76 | 94.4 | 38 | 49.8 | 106 | 0.00 | 54 | 0 |
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| 1913 | 74.7 | 22 | 95.6 | 18 | 53.7 | 53 | trace | 37 | 0 |
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| 1912 | 70.3 | 116 | 91.9 | 81 | 48.8 | 118 | 0.00 | 54 | 0 |
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| 1911 | 70.5 | 108 | 94.5 | 36 | 46.5 | 129 | 0.00 | 54 | 0 |
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| 1910 | 71.7 | 85 | 98.3 | 3 | 45.1 | 131 | 0.00 | 54 | 0 |
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| 1909 | 71.5 | 92 | 95.7 | 16 | 47.3 | 127 | 0.00 | 54 | 0 |
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| 1908 | 73.1 | 56 | 95.8 | 15 | 50.4 | 102 | 0.00 | 54 | 0 |
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| 1907 | 70.1 | 119 | 90.5 | 101 | 49.8 | 106 | 0.00 | 54 | 0 |
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| 1906 | 73.3 | 49 | 95.6 | 18 | 50.9 | 98 | 0.00 | 54 | 0 |
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| 1905 | 71.1 | 98 | 93.2 | 60 | 49 | 117 | 0.00 | 54 | 0 |
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| 1904 | 73.1 | 56 | 96.7 | 9 | 49.6 | 111 | 0.02 | 29 | 1 |
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| 1903 | 69.7 | 123 | 91.8 | 83 | 47.6 | 125 | 0.00 | 54 | 0 |
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| 1901 | 72.7 | 65 | 94.3 | 40 | 51.2 | 95 | 0.00 | 54 | 0 |
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| 1900 | 68.6 | 130 | 89.8 | 107 | 47.4 | 126 | | | 0 |
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| 1899 | 67.4 | 131 | 86.9 | 127 | 47.8 | 124 | 0.02 | 29 | 0 |
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| 1898 | 70.4 | 113 | 88.4 | 119 | 52.4 | 76 | trace | 37 | 0 |
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| 1897 | 70.4 | 113 | 88.5 | 118 | 52.3 | 78 | | | 0 |
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| 1896 | 68.8 | 129 | 84.7 | 131 | 52.9 | 69 | 0.04 | 24 | 0 |
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| 1895 | 70.5 | 108 | 89.4 | 111 | 51.7 | 82 | | | 0 |
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| 1894 | 71.6 | 90 | 90.1 | 104 | 53.1 | 66 | | | 0 |
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| 1893 | 70.5 | 108 | 90.7 | 98 | 50.2 | 104 | 0.00 | 54 | 0 |
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