Every 1 September to 9 October in Omak, WA from 1909 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 | 61.8 | 26 | 75.6 | 49 | 48.1 | 12 | 0.53 | 52 | 0 |
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| 2025 | 66.6 | 2 | 81.4 | 4 | 51.9 | 1 | 0.12 | 87 | 0 |
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| 2024 | 65.5 | 5 | 81.4 | 4 | 49.7 | 5 | 0.03 | 98 | 0 |
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| 2023 | 64 | 10 | 77.5 | 33 | 50.5 | 4 | 1.74 | 11 | 0 |
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| 2022 | 66.9 | 1 | 82.4 | 2 | 51.4 | 2 | 0.26 | 73 | 0 |
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| 2021 | 60.5 | 44 | 75.2 | 53 | 45.9 | 34 | 0.29 | 69 | 0 |
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| 2020 | 65.9 | 3 | 81.1 | 7 | 50.7 | 3 | 0.35 | 64 | 0 |
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| 2019 | 58.8 | 66 | 70 | 98 | 47.6 | 14 | 2.97 | 1 | 0 |
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| 2018 | 59 | 63 | 72.2 | 85 | 45.9 | 34 | 0.75 | 44 | 0 |
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| 2017 | 60.7 | 40 | 75.8 | 43 | 45.5 | 45 | 0.10 | 92 | 0 |
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| 2016 | 59.8 | 53 | 73.4 | 73 | 46.2 | 31 | 0.20 | 76 | 0 |
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| 2015 | 61.4 | 32 | 74.5 | 60 | 48.3 | 11 | 0.17 | 81 | 0 |
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| 2014 | 62.4 | 21 | 77.6 | 32 | 47.3 | 18 | 0.77 | 43 | 0 |
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| 2013 | 60.8 | 39 | 74.2 | 66 | 47.4 | 16 | 1.46 | 18 | 0 |
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| 2012 | 62.1 | 24 | 79.7 | 14 | 44.4 | 53 | 0.01 | 100 | 0 |
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| 2011 | 61.8 | 26 | 78.1 | 25 | 45.5 | 45 | 0.90 | 35 | 0 |
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| 2010 | 60.9 | 37 | 74.5 | 60 | 47.3 | 18 | 1.21 | 25 | 0 |
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| 2009 | 60.3 | 45 | 76.8 | 36 | 43.7 | 58 | 0.43 | 58 | 0 |
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| 2008 | 59.3 | 58 | 75 | 55 | 43.6 | 60 | 0.79 | 42 | 0 |
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| 2007 | 58.5 | 71 | 73.2 | 76 | 43.7 | 58 | 1.04 | 31 | 1 |
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| 2006 | 61.8 | 26 | 77 | 35 | 46.5 | 25 | 0.22 | 74 | 0 |
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| 2005 | 57.4 | 78 | 72.1 | 86 | 42.8 | 76 | 0.90 | 35 | 0 |
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| 2004 | 60.2 | 47 | 74.6 | 59 | 45.7 | 38 | 0.20 | 76 | 0 |
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| 2003 | 63.8 | 13 | 79.5 | 15 | 48.1 | 12 | 0.35 | 64 | 0 |
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| 2002 | 59.4 | 55 | 75.7 | 45 | 43 | 73 | 0.22 | 74 | 0 |
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| 2001 | 62.2 | 23 | 77.9 | 28 | 46.4 | 27 | 0.40 | 61 | 0 |
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| 2000 | 56.6 | 91 | 73.2 | 76 | 40.1 | 96 | 0.07 | 94 | 0 |
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| 1999 | 59.1 | 61 | 75.1 | 54 | 43.1 | 71 | trace | 102 | 0 |
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| 1998 | 63.3 | 15 | 79.8 | 13 | 46.8 | 20 | 0.33 | 66 | 0 |
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| 1997 | | | | | | | | | 13 |
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| 1996 | 58.9 | 64 | 72.4 | 84 | 45.7 | 38 | 1.88 | 7 | 3 |
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| 1995 | | | | | | | | | 35 |
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| 1994 | | | | | | | 0.12 | 87 | 6 |
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| 1993 | | | | | | | | | 10 |
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| 1992 | 60 | 50 | 74.4 | 63 | 45.6 | 40 | 0.15 | 83 | 2 |
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| 1990 | 64.6 | 8 | 80.5 | 11 | 48.7 | 8 | 0.00 | 104 | 1 |
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| 1989 | 62.7 | 18 | 78.5 | 22 | 46.8 | 20 | 0.19 | 79 | 0 |
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| 1988 | 63.9 | 11 | 79.2 | 17 | 48.6 | 9 | 0.10 | 92 | 0 |
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| 1987 | 65.2 | 6 | 82.1 | 3 | 48.4 | 10 | 0.00 | 104 | 0 |
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| 1986 | 58.7 | 67 | 71.4 | 90 | 46.1 | 32 | 2.21 | 4 | 0 |
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| 1984 | 59.3 | 58 | 75.7 | 45 | 42.9 | 74 | 0.11 | 90 | 0 |
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| 1983 | 58.6 | 69 | 73.6 | 71 | 43.5 | 65 | 0.46 | 55 | 0 |
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| 1982 | 59.9 | 52 | 74.7 | 58 | 45.1 | 47 | 0.58 | 49 | 0 |
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| 1981 | 60.6 | 43 | 76.2 | 41 | 45 | 50 | 2.00 | 6 | 0 |
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| 1980 | 62.6 | 19 | 77.7 | 30 | 47.4 | 16 | 1.46 | 18 | 0 |
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| 1979 | | | | | | | | | 15 |
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| 1978 | 56.7 | 90 | 69.9 | 99 | 43.5 | 65 | 1.23 | 24 | 0 |
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| 1977 | | | | | | | 0.63 | 46 | 7 |
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| 1976 | 60.9 | 37 | 75.3 | 52 | 46.6 | 24 | 0.16 | 82 | 0 |
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| 1975 | 58.4 | 73 | 73.8 | 68 | 43.1 | 71 | 0.12 | 87 | 0 |
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| 1974 | 57.8 | 76 | 74.5 | 60 | 41.1 | 90 | 0.06 | 97 | 0 |
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| 1973 | 56.1 | 95 | 70.1 | 97 | 42.2 | 84 | 2.46 | 3 | 0 |
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| 1972 | 53.9 | 104 | 69.2 | 101 | 38.7 | 103 | 0.46 | 55 | 0 |
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| 1971 | 55.1 | 100 | 69 | 102 | 41.1 | 90 | 1.33 | 23 | 0 |
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| 1970 | 54.4 | 103 | 68.9 | 103 | 40.1 | 96 | 0.31 | 68 | 1 |
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| 1969 | 57.2 | 82 | 70.9 | 94 | 43.6 | 60 | 1.50 | 16 | 0 |
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| 1968 | 57.4 | 78 | 71.6 | 89 | 43.2 | 69 | 0.07 | 94 | 0 |
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| 1967 | 61.6 | 31 | 78.1 | 25 | 45.1 | 47 | 1.14 | 27 | 0 |
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| 1966 | 61.3 | 35 | 76.1 | 42 | 46.5 | 25 | 1.57 | 14 | 0 |
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| 1965 | 56.8 | 89 | 71.4 | 90 | 42.3 | 83 | 0.01 | 100 | 0 |
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| 1964 | 55.7 | 97 | 70.7 | 95 | 40.6 | 95 | 0.43 | 58 | 0 |
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| 1963 | 62.6 | 19 | 78.8 | 19 | 46.3 | 28 | 0.63 | 46 | 0 |
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| 1962 | 59.4 | 55 | 75.4 | 51 | 43.5 | 65 | 1.68 | 13 | 0 |
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| 1961 | 55.3 | 98 | 70.6 | 96 | 39.9 | 99 | 0.07 | 94 | 0 |
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| 1960 | 59.1 | 61 | 74.1 | 67 | 44 | 55 | 0.46 | 55 | 0 |
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| 1959 | | | | | | | 2.71 | 2 | 9 |
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| 1958 | 57.2 | 82 | 73 | 78 | 41.4 | 86 | 0.89 | 37 | 0 |
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| 1957 | 60.2 | 47 | 74.8 | 57 | 45.6 | 40 | 1.05 | 29 | 2 |
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| 1956 | 58.7 | 67 | 76.5 | 37 | 40.9 | 92 | 0.02 | 99 | 0 |
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| 1955 | 57.3 | 81 | 72.1 | 86 | 42.4 | 80 | 0.83 | 41 | 0 |
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| 1954 | 57.2 | 82 | 71.1 | 92 | 43.6 | 60 | 0.98 | 33 | 1 |
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| 1953 | | | | | | | | | 30 |
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| 1952 | 61.7 | 30 | 77.7 | 30 | 45.6 | 40 | 0.40 | 61 | 0 |
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| 1951 | 58.4 | 73 | 72.9 | 79 | 43.9 | 57 | 1.52 | 15 | 0 |
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| 1950 | 57.1 | 87 | 73.3 | 75 | 40.7 | 93 | 0.86 | 39 | 2 |
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| 1949 | 57.2 | 82 | 72.9 | 79 | 41.4 | 86 | 0.57 | 50 | 0 |
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| 1948 | 54.5 | 102 | 69.9 | 99 | 39.2 | 101 | 2.09 | 5 | 0 |
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| 1947 | 58.5 | 71 | 73.4 | 73 | 43.6 | 60 | 1.05 | 29 | 0 |
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| 1946 | 56.2 | 94 | 71.1 | 92 | 41.3 | 88 | 0.37 | 63 | 0 |
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| 1945 | 55.2 | 99 | 72.8 | 81 | 37.4 | 106 | 0.29 | 69 | 1 |
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| 1944 | 62.4 | 21 | 78 | 27 | 46.8 | 20 | 1.85 | 9 | 0 |
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| 1943 | 63.2 | 16 | 80.3 | 12 | 46 | 33 | 0.00 | 104 | 0 |
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| 1942 | 62.1 | 24 | 78.4 | 23 | 45.8 | 36 | 0.00 | 104 | 0 |
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| 1941 | 54.9 | 101 | 67.2 | 104 | 42.5 | 78 | 1.38 | 22 | 0 |
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| 1940 | 64.6 | 8 | 79.4 | 16 | 49.7 | 5 | 1.80 | 10 | 0 |
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| 1939 | 61.4 | 32 | 77.8 | 29 | 45 | 50 | 0.61 | 48 | 0 |
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| 1938 | 65.2 | 6 | 81.2 | 6 | 49.3 | 7 | 0.89 | 37 | 0 |
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| 1937 | 60.3 | 45 | 75 | 55 | 45.6 | 40 | 1.87 | 8 | 0 |
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| 1936 | 59.8 | 53 | 76.4 | 38 | 43.2 | 69 | 0.14 | 85 | 0 |
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| 1935 | 63.9 | 11 | 81.1 | 7 | 46.7 | 23 | 0.14 | 85 | 0 |
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| 1934 | 58.6 | 69 | 73.5 | 72 | 43.6 | 60 | 0.53 | 52 | 0 |
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| 1933 | 58.4 | 73 | 74.4 | 63 | 42.4 | 80 | 0.97 | 34 | 0 |
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| 1932 | 61.4 | 32 | 78.7 | 20 | 44.2 | 54 | trace | 102 | 0 |
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| 1931 | 60.1 | 49 | 74.4 | 63 | 45.8 | 36 | 0.49 | 54 | 0 |
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| 1930 | 61.1 | 36 | 77.2 | 34 | 45.1 | 47 | 1.02 | 32 | 0 |
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| 1929 | 57.8 | 76 | 75.7 | 45 | 40.1 | 96 | | | 1 |
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| 1928 | 60 | 50 | 78.7 | 20 | 41.2 | 89 | | | 0 |
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| 1927 | 57.2 | 82 | 72 | 88 | 42.4 | 80 | | | 0 |
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| 1926 | 56.1 | 95 | 72.5 | 83 | 39.7 | 100 | 1.74 | 11 | 0 |
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| 1925 | 60.7 | 40 | 79.2 | 17 | 42.7 | 77 | 0.27 | 72 | 3 |
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| 1924 | 60.7 | 40 | 78.2 | 24 | 43.5 | 65 | 0.86 | 39 | 2 |
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| 1923 | | | | | 44.9 | 52 | 1.11 | 28 | 6 |
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| 1922 | 63.2 | 16 | 80.7 | 10 | 45.6 | 40 | 1.48 | 17 | 1 |
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| 1921 | 56.9 | 88 | 75.5 | 50 | 38.3 | 105 | 0.32 | 67 | 0 |
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| 1920 | 61.8 | 26 | 75.7 | 45 | 47.6 | 14 | 1.20 | 26 | 1 |
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| 1919 | | | | | 42.9 | 74 | 1.42 | 20 | 8 |
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| 1918 | 65.9 | 3 | 85.7 | 1 | 46.3 | 28 | 0.28 | 71 | 3 |
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| 1917 | 63.7 | 14 | 81.1 | 7 | 46.3 | 28 | 0.20 | 76 | 0 |
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| 1916 | 59.4 | 55 | 76.3 | 39 | 42.5 | 78 | 0.11 | 90 | 0 |
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| 1915 | 59.2 | 60 | 76.3 | 39 | 42.1 | 85 | 0.56 | 51 | 0 |
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| 1914 | 56.6 | 91 | 72.6 | 82 | 40.7 | 93 | 1.41 | 21 | 0 |
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| 1913 | 57.4 | 78 | 75.8 | 43 | 39 | 102 | 0.64 | 45 | 0 |
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| 1912 | 56.3 | 93 | 73.7 | 70 | 38.7 | 103 | 0.19 | 79 | 1 |
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| 1911 | 58.9 | 64 | 73.8 | 68 | 44 | 55 | 0.15 | 83 | 0 |
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| 1910 | | | | | | | | | 9 |
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| 1909 | | | | | | | 0.42 | 60 | 39 |
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