Every April 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 | 57.4 | 40 | 70.9 | 57 | 43.8 | 22 | 3.32 | 28 | 0 |
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| 2025 | 59.9 | 11 | 74.2 | 29 | 45.5 | 7 | 1.02 | 90 | 0 |
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| 2024 | 57.9 | 34 | 71.8 | 48 | 44 | 17 | 1.12 | 84 | 0 |
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| 2023 | 56.3 | 61 | 70.8 | 58 | 41.9 | 55 | 0.67 | 104 | 0 |
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| 2022 | 54.6 | 88 | 68.1 | 93 | 41 | 75 | 2.72 | 40 | 0 |
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| 2021 | 59.1 | 19 | 76.6 | 11 | 41.6 | 63 | 0.29 | 119 | 0 |
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| 2020 | 59.2 | 17 | 72.3 | 46 | 46.1 | 6 | 0.84 | 99 | 0 |
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| 2019 | 60.4 | 9 | 73.3 | 35 | 47.5 | 1 | 0.59 | 108 | 0 |
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| 2018 | 56.6 | 56 | 69.3 | 74 | 43.8 | 22 | 4.93 | 14 | 0 |
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| 2017 | 55.4 | 75 | 67.3 | 102 | 43.4 | 32 | 3.74 | 27 | 0 |
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| 2016 | 58.8 | 21 | 72.7 | 44 | 44.9 | 9 | 1.27 | 81 | 0 |
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| 2015 | 58 | 31 | 73.8 | 30 | 42.3 | 47 | 1.93 | 63 | 0 |
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| 2014 | 59.2 | 17 | 74.5 | 26 | 43.9 | 21 | 1.37 | 77 | 0 |
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| 2013 | 59.6 | 14 | 75.6 | 18 | 43.6 | 25 | 1.08 | 86 | 0 |
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| 2012 | 55.5 | 74 | 67.8 | 96 | 43.2 | 39 | 1.35 | 80 | 0 |
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| 2011 | 53.5 | 104 | 65.6 | 118 | 41.4 | 70 | 0.71 | 102 | 0 |
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| 2010 | 51.7 | 123 | 63.1 | 126 | 40.3 | 88 | 6.89 | 6 | 0 |
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| 2009 | 55 | 81 | 69.2 | 77 | 40.8 | 81 | 0.47 | 114 | 0 |
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| 2008 | 53.1 | 110 | 68.3 | 90 | 37.8 | 122 | 0.38 | 116 | 0 |
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| 2007 | 55.9 | 69 | 70 | 67 | 41.9 | 55 | 2.11 | 57 | 0 |
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| 2006 | 54.7 | 86 | 64.8 | 122 | 44.5 | 10 | 7.63 | 3 | 0 |
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| 2005 | 53.1 | 110 | 65.7 | 116 | 40.5 | 87 | 2.65 | 46 | 0 |
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| 2004 | 57.5 | 38 | 72.8 | 43 | 42.2 | 49 | 0.52 | 111 | 0 |
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| 2003 | 50.4 | 130 | 59 | 131 | 41.7 | 61 | 8.55 | 2 | 0 |
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| 2002 | 56 | 66 | 68.5 | 88 | 43.5 | 26 | 0.85 | 97 | 0 |
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| 2001 | 52.7 | 115 | 65.8 | 113 | 39.5 | 101 | 1.05 | 88 | 0 |
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| 2000 | 58 | 31 | 71.8 | 48 | 44.3 | 13 | 2.95 | 37 | 1 |
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| 1999 | 55.6 | 71 | 69.5 | 71 | 41.5 | 65 | 2.06 | 59 | 1 |
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| 1998 | 54.3 | 91 | 67.3 | 102 | 41.9 | 55 | 2.29 | 54 | 1 |
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| 1997 | 56.6 | 56 | 69.4 | 73 | 44 | 17 | 1.04 | 89 | 1 |
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| 1996 | 57.2 | 46 | 70.3 | 62 | 44.2 | 14 | 3.82 | 25 | 1 |
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| 1995 | 54.2 | 95 | 67.9 | 94 | 40.7 | 82 | 4.60 | 19 | 1 |
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| 1994 | 56.7 | 55 | 70.1 | 63 | 43.3 | 36 | 2.66 | 44 | 0 |
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| 1993 | 54.8 | 85 | 66.1 | 110 | 43.5 | 26 | 2.62 | 47 | 1 |
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| 1992 | 59.9 | 11 | 73.3 | 35 | 46.5 | 4 | 1.23 | 83 | 0 |
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| 1991 | 53.8 | 99 | 66.1 | 110 | 41.5 | 65 | 0.86 | 95 | 2 |
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| 1990 | 60.2 | 10 | 72.9 | 41 | 47.5 | 1 | 0.52 | 111 | 0 |
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| 1989 | 61.2 | 2 | 75.9 | 14 | 46.4 | 5 | 1.47 | 72 | 0 |
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| 1988 | 56.8 | 53 | 69.7 | 68 | 44 | 17 | 3.07 | 33 | 1 |
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| 1987 | 60.8 | 4 | 77.5 | 6 | 44 | 17 | 0.19 | 123 | 0 |
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| 1986 | 57 | 49 | 70.7 | 59 | 43.4 | 32 | 0.85 | 97 | 0 |
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| 1984 | 54.7 | 86 | 67.2 | 104 | 42.2 | 49 | 1.70 | 67 | 0 |
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| 1983 | 53 | 112 | 64.4 | 125 | 41.5 | 65 | 6.99 | 5 | 0 |
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| 1982 | 54.3 | 91 | 67.9 | 94 | 40.6 | 85 | 5.70 | 10 | 0 |
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| 1981 | 58 | 31 | 73.1 | 38 | 42.9 | 41 | 0.63 | 105 | 0 |
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| 1980 | 57.4 | 40 | 71.3 | 53 | 43.5 | 26 | 2.41 | 49 | 0 |
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| 1979 | 56.1 | 65 | 69 | 81 | 43.3 | 36 | 1.68 | 68 | 1 |
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| 1978 | 53.3 | 107 | 66.4 | 108 | 40.2 | 90 | 4.63 | 18 | 0 |
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| 1977 | 58.7 | 25 | 75.2 | 19 | 42.2 | 49 | 0.14 | 125 | 0 |
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| 1976 | 52.4 | 119 | 65.8 | 113 | 39 | 111 | 3.05 | 34 | 0 |
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| 1975 | 50.6 | 128 | 62.9 | 127 | 38.3 | 118 | 1.55 | 70 | 0 |
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| 1974 | 55.1 | 78 | 69.3 | 74 | 41 | 75 | 2.67 | 43 | 0 |
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| 1973 | 58.3 | 27 | 74.7 | 24 | 42 | 53 | 0.22 | 122 | 0 |
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| 1972 | 54.9 | 82 | 68.8 | 82 | 41 | 75 | 2.35 | 51 | 0 |
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| 1971 | 53 | 112 | 66.9 | 105 | 39 | 111 | 1.46 | 74 | 0 |
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| 1970 | 52.2 | 120 | 67.6 | 100 | 36.9 | 127 | 1.24 | 82 | 0 |
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| 1969 | 54.3 | 91 | 68.7 | 84 | 39.9 | 93 | 2.82 | 38 | 0 |
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| 1968 | 57.4 | 40 | 75 | 21 | 39.9 | 93 | 0.48 | 113 | 0 |
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| 1967 | 47.1 | 133 | 57.2 | 133 | 37.1 | 126 | 4.79 | 17 | 0 |
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| 1966 | 60.9 | 3 | 78.7 | 1 | 43.1 | 40 | 1.47 | 72 | 1 |
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| 1965 | 55.6 | 71 | 67.7 | 99 | 43.5 | 26 | 4.90 | 15 | 0 |
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| 1964 | 55.1 | 78 | 71.6 | 51 | 38.7 | 115 | 0.46 | 115 | 0 |
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| 1963 | 50.9 | 127 | 62 | 129 | 39.7 | 99 | 7.61 | 4 | 0 |
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| 1962 | 59.3 | 16 | 75.7 | 16 | 42.9 | 41 | 0.03 | 128 | 0 |
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| 1961 | 57.5 | 38 | 73.6 | 31 | 41.4 | 70 | 2.03 | 60 | 0 |
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| 1960 | 55.3 | 77 | 68.3 | 90 | 42.2 | 49 | 1.41 | 75 | 0 |
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| 1959 | 60.7 | 6 | 78.5 | 2 | 42.7 | 43 | 0.32 | 118 | 1 |
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| 1958 | 56.2 | 63 | 71.1 | 55 | 41.3 | 73 | 5.76 | 9 | 0 |
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| 1957 | 57.8 | 35 | 73 | 39 | 42.6 | 44 | 2.34 | 52 | 0 |
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| 1956 | 57.3 | 44 | 73.2 | 37 | 41.5 | 65 | 0.90 | 94 | 0 |
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| 1955 | 51.3 | 125 | 64.7 | 123 | 38.1 | 120 | 4.82 | 16 | 1 |
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| 1954 | 60.5 | 7 | 75.7 | 16 | 45.2 | 8 | 3.31 | 29 | 0 |
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| 1953 | 56.9 | 52 | 72 | 47 | 41.8 | 58 | 3.83 | 24 | 0 |
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| 1952 | 58.4 | 26 | 74.3 | 28 | 42.5 | 46 | 1.11 | 85 | 0 |
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| 1951 | 58.9 | 20 | 74.5 | 26 | 43.4 | 32 | 1.39 | 76 | 0 |
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| 1950 | 58.3 | 27 | 74.9 | 22 | 41.6 | 63 | 2.02 | 61 | 0 |
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| 1949 | 59.7 | 13 | 77.5 | 6 | 41.8 | 58 | 0.08 | 126 | 0 |
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| 1948 | 51.1 | 126 | 62.4 | 128 | 39.8 | 97 | 8.64 | 1 | 0 |
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| 1947 | 60.5 | 7 | 76.9 | 9 | 44.1 | 15 | 0.95 | 91 | 0 |
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| 1946 | 56.8 | 53 | 73 | 39 | 40.6 | 85 | 0.03 | 128 | 0 |
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| 1945 | 56.3 | 61 | 73.4 | 33 | 39.2 | 109 | 0.63 | 105 | 0 |
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| 1944 | 52.2 | 120 | 65 | 121 | 39.4 | 105 | 2.66 | 44 | 0 |
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| 1943 | 57.1 | 47 | 69.7 | 68 | 44.4 | 11 | 3.08 | 32 | 1 |
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| 1942 | 53.7 | 102 | 66 | 112 | 41.5 | 65 | 6.75 | 7 | 0 |
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| 1941 | 54.9 | 82 | 68.7 | 84 | 41 | 75 | 5.16 | 12 | 0 |
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| 1940 | 57.3 | 44 | 71.4 | 52 | 43.3 | 36 | 0.81 | 100 | 0 |
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| 1939 | 59.5 | 15 | 77.6 | 5 | 41.3 | 73 | 0.04 | 127 | 0 |
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| 1938 | 55.4 | 75 | 68.8 | 82 | 42 | 53 | 2.96 | 36 | 0 |
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| 1937 | 53.5 | 104 | 66.9 | 105 | 40.2 | 90 | 1.77 | 65 | 0 |
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| 1936 | 58.2 | 29 | 72.9 | 41 | 43.5 | 26 | 2.15 | 55 | 0 |
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| 1935 | 54.9 | 82 | 66.4 | 108 | 43.4 | 32 | 4.34 | 21 | 0 |
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| 1934 | 60.8 | 4 | 77.2 | 8 | 44.4 | 11 | 0.93 | 92 | 0 |
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| 1933 | 56.2 | 63 | 72.4 | 45 | 39.9 | 93 | 0.01 | 130 | 0 |
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| 1932 | 53.7 | 102 | 67.5 | 101 | 39.9 | 93 | 2.34 | 52 | 0 |
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| 1931 | 58.1 | 30 | 75.9 | 14 | 40.3 | 88 | 0.68 | 103 | 0 |
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| 1930 | 56 | 66 | 70.1 | 63 | 41.8 | 58 | 2.69 | 42 | 0 |
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| 1929 | 51.4 | 124 | 65.5 | 119 | 37.2 | 125 | 2.45 | 48 | 0 |
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| 1928 | 54.5 | 89 | 68.7 | 84 | 40.2 | 90 | 2.99 | 35 | 0 |
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| 1927 | 55.1 | 78 | 70.5 | 61 | 39.7 | 99 | 3.19 | 30 | 0 |
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| 1926 | 61.6 | 1 | 76.2 | 12 | 47.1 | 3 | 5.00 | 13 | 0 |
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| 1925 | 57 | 49 | 70.1 | 63 | 43.8 | 22 | 4.46 | 20 | 0 |
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| 1924 | 57.8 | 35 | 77.9 | 4 | 37.6 | 124 | 0.15 | 124 | 0 |
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| 1923 | 52.6 | 117 | 65.8 | 113 | 39.4 | 105 | 5.46 | 11 | 0 |
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| 1922 | 53.4 | 106 | 71 | 56 | 35.8 | 133 | 0.60 | 107 | 0 |
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| 1921 | 53.2 | 108 | 69.7 | 68 | 36.8 | 129 | 0.37 | 117 | 0 |
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| 1920 | 50.6 | 128 | 64.6 | 124 | 36.7 | 131 | 4.07 | 23 | 0 |
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| 1919 | 58.8 | 21 | 74.9 | 22 | 42.6 | 44 | 1.54 | 71 | 0 |
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| 1918 | 56 | 66 | 75.2 | 19 | 36.8 | 129 | 1.08 | 86 | 0 |
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| 1917 | 53.9 | 98 | 69.2 | 77 | 38.6 | 116 | 2.73 | 39 | 0 |
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| 1916 | 57 | 49 | 76.1 | 13 | 37.8 | 122 | 0.25 | 121 | 0 |
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| 1915 | 57.1 | 47 | 70.1 | 63 | 44.1 | 15 | 0.55 | 110 | 0 |
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| 1914 | 55.6 | 71 | 67.8 | 96 | 43.5 | 26 | 2.10 | 58 | 0 |
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| 1913 | 54.1 | 96 | 69.3 | 74 | 38.8 | 113 | 1.96 | 62 | 0 |
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| 1912 | 52 | 122 | 65.2 | 120 | 38.8 | 113 | 3.81 | 26 | 0 |
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| 1911 | 53.8 | 99 | 68.5 | 88 | 39.1 | 110 | 2.72 | 40 | 0 |
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| 1910 | 58.8 | 21 | 76.8 | 10 | 40.7 | 82 | 0.86 | 95 | 0 |
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| 1909 | 58.8 | 21 | 78.4 | 3 | 39.3 | 108 | 0.00 | 132 | 0 |
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| 1908 | 56.6 | 56 | 74.6 | 25 | 38.6 | 116 | 0.29 | 119 | 0 |
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| 1907 | 57.8 | 35 | 73.5 | 32 | 42.3 | 47 | 1.61 | 69 | 1 |
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| 1906 | 55.8 | 70 | 70.7 | 59 | 40.9 | 79 | 1.71 | 66 | 0 |
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| 1905 | 56.6 | 56 | 71.2 | 54 | 41.7 | 61 | 1.37 | 77 | 1 |
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| 1904 | 54.3 | 91 | 67.8 | 96 | 40.7 | 82 | 3.10 | 31 | 0 |
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| 1903 | 52.7 | 115 | 69.2 | 77 | 36.1 | 132 | 0.01 | 130 | 0 |
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| 1902 | 52.6 | 117 | 65.7 | 116 | 39.5 | 101 | | | 0 |
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| 1901 | 52.8 | 114 | 69.2 | 77 | 36.9 | 127 | 2.15 | 55 | 2 |
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| 1900 | 53.8 | 99 | 68.2 | 92 | 39.4 | 105 | 1.91 | 64 | 1 |
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| 1899 | 54.1 | 96 | 68.7 | 84 | 39.5 | 101 | 0.56 | 109 | 0 |
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| 1898 | 56.4 | 60 | 71.8 | 48 | 40.9 | 79 | 0.80 | 101 | 0 |
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| 1897 | 57.4 | 40 | 73.4 | 33 | 41.4 | 70 | 0.91 | 93 | 0 |
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| 1896 | 48.4 | 132 | 58.6 | 132 | 38.2 | 119 | 5.97 | 8 | 0 |
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| 1895 | 53.2 | 108 | 66.6 | 107 | 39.8 | 97 | 1.36 | 79 | 0 |
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| 1894 | 54.5 | 89 | 69.5 | 71 | 39.5 | 101 | 2.36 | 50 | 0 |
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| 1893 | 49.7 | 131 | 60.9 | 130 | 38 | 121 | 4.12 | 22 | 2 |
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