| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1893 | 12.74 | 19.39 | 26.29 | 33.73 | 46.61 | 55.40 | 59.94 | 60.52 | 49.20 | 44.19 | 32.33 | 22.03 | 38.53 | |||||||||||||
| 1894 | 22.81 | 17.57 | 32.87 | 36.30 | 46.06 | 56.47 | 62.65 | 57.16 | 55.33 | 45.42 | 31.33 | 24.33 | a | 40.69 | ||||||||||||
| 1895 | 21.03 | 14.68 | 27.55 | 36.00 | 46.94 | 57.70 | 59.23 | 61.61 | 55.43 | 38.58 | 36.40 | 26.84 | 40.17 | |||||||||||||
| 1896 | 16.87 | 21.24 | 24.00 | 36.33 | 47.94 | 55.03 | 63.26 | 60.71 | 54.30 | 42.42 | 38.40 | 20.19 | 40.06 | |||||||||||||
| 1897 | 20.13 | 23.21 | 29.00 | 37.43 | 48.23 | 52.57 | 63.68 | 59.45 | 52.00 | 42.10 | 33.70 | 28.03 | 40.79 | |||||||||||||
| 1898 | 20.77 | 23.14 | 31.65 | 35.77 | 46.55 | 55.67 | 61.84 | 63.26 | 55.33 | 46.03 | 33.33 | 24.61 | 41.50 | |||||||||||||
| 1899 | 20.55 | 18.18 | 28.94 | 35.73 | 45.13 | 57.63 | 61.65 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.26 | e | |||||||
| 1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1901 | 20.56 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.68 | 62.16 | 54.17 | a | 41.35 | 27.67 | 22.43 | a | 41.86 | e | ||||
| 1902 | 20.24 | f | 20.09 | e | 33.03 | a | 39.84 | k | 47.63 | a | 53.28 | a | 59.39 | 57.87 | 54.97 | 45.06 | 38.13 | 20.97 | a | 43.04 | b | |||||
| 1903 | 20.42 | 22.21 | 34.26 | 37.63 | 47.42 | 51.77 | 61.00 | 56.45 | 52.50 | 44.61 | 30.31 | a | 18.70 | a | 39.77 | |||||||||||
| 1904 | 13.55 | 12.79 | a | 25.80 | a | 34.47 | 48.23 | 52.73 | 61.00 | 59.00 | 52.10 | 39.35 | 28.10 | 16.32 | 36.95 | |||||||||||
| 1905 | 15.58 | 13.07 | a | 26.10 | 38.07 | 47.16 | 54.63 | 63.71 | 60.14 | b | 54.53 | 45.39 | 32.93 | 26.77 | 39.84 | |||||||||||
| 1906 | 28.45 | b | 22.82 | 26.13 | 39.17 | 47.83 | a | 57.60 | 63.65 | 65.81 | 57.07 | 48.29 | 35.28 | a | ----- | z | 44.73 | a | ||||||||
| 1907 | 12.87 | p | 13.83 | e | 30.61 | 36.07 | 44.00 | 55.10 | 64.06 | 62.26 | 59.10 | a | 42.17 | a | 39.22 | c | 31.63 | a | 43.46 | a | ||||||
| 1908 | 23.32 | 20.32 | d | 31.27 | e | 37.37 | 51.13 | 58.97 | 65.23 | a | 62.07 | c | 56.50 | 47.38 | b | 36.48 | a | 24.77 | 42.90 | |||||||
| 1909 | ----- | z | 23.89 | 26.81 | d | 37.52 | c | 47.90 | b | 60.57 | 63.52 | 62.26 | 56.39 | b | 45.47 | a | 40.63 | 24.20 | a | 44.47 | a | |||||
| 1910 | 25.61 | 22.68 | 32.60 | a | 42.43 | 49.06 | 57.13 | 64.77 | 61.23 | 54.86 | a | 47.35 | 34.20 | 19.13 | 42.59 | |||||||||||
| 1911 | 24.34 | b | 20.69 | b | 25.77 | 36.13 | 50.83 | a | 57.17 | 65.84 | 61.94 | 54.83 | 45.61 | 34.17 | 32.42 | 42.48 | ||||||||||
| 1912 | 14.58 | 19.55 | 29.10 | a | 39.69 | a | 49.45 | 56.20 | 63.65 | 59.87 | 53.60 | 48.42 | 37.59 | a | 31.60 | a | 41.94 | |||||||||
| 1913 | 31.48 | 19.85 | a | 31.27 | a | 39.69 | a | 46.37 | a | 56.43 | 63.90 | 59.80 | f | 52.50 | 48.80 | p | 41.72 | a | 36.33 | m | 42.58 | c | ||||
| 1914 | 25.33 | a | 19.32 | c | 30.87 | 37.63 | 49.68 | 58.11 | b | 60.61 | 63.29 | 55.27 | 49.58 | 35.41 | a | 25.79 | c | 42.57 | ||||||||
| 1915 | 25.89 | c | 27.07 | a | 27.33 | a | 42.07 | 47.39 | 55.21 | a | 63.52 | 61.81 | 58.80 | 48.00 | g | 34.56 | u | 27.74 | 43.68 | b | ||||||
| 1916 | 26.97 | a | 20.28 | 24.87 | 39.73 | 50.68 | 56.10 | 66.25 | c | 65.00 | a | 57.93 | 49.10 | a | 41.26 | k | 27.10 | a | 44.00 | a | ||||||
| 1917 | 24.54 | g | 19.25 | 30.65 | 38.00 | 44.10 | 59.37 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.27 | g | |||||
| 1918 | 14.71 | c | 19.20 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 16.96 | j |
| 1919 | 26.71 | 25.21 | 33.06 | 38.75 | b | 51.97 | b | 58.37 | 65.68 | 60.23 | 56.27 | 49.19 | 36.00 | 21.74 | 43.60 | |||||||||||
| 1920 | 15.73 | a | 21.96 | a | 30.55 | b | 38.86 | a | 46.35 | 56.90 | 63.00 | a | 66.26 | ----- | z | 49.57 | a | 36.62 | a | 29.10 | b | 41.36 | a | |||
| 1921 | 21.67 | d | 25.14 | 36.61 | 41.43 | 47.10 | 56.30 | 65.67 | a | 59.58 | 59.11 | c | 45.06 | 35.86 | a | 24.07 | a | 43.13 | ||||||||
| 1922 | 19.60 | a | 24.96 | a | 31.16 | 37.93 | 50.90 | 60.40 | 61.87 | 60.87 | 52.50 | 41.85 | d | 35.38 | a | 26.46 | c | 41.99 | ||||||||
| 1923 | 22.13 | 17.25 | ----- | z | 41.35 | g | 49.65 | 59.93 | 64.23 | 61.03 | 60.00 | 46.48 | 39.00 | 36.33 | a | 45.60 | b | |||||||||
| 1924 | 25.79 | b | 21.21 | 32.35 | 40.07 | 50.07 | a | 58.57 | 65.29 | 64.68 | 58.83 | a | 45.03 | a | 37.50 | b | 26.00 | b | 43.78 | |||||||
| 1925 | 24.73 | a | 33.86 | 35.68 | 41.93 | 48.16 | 61.43 | 62.97 | 61.97 | 57.17 | 43.26 | 37.40 | 29.74 | 44.86 | ||||||||||||
| 1926 | 26.39 | 21.50 | 28.42 | 37.60 | 47.57 | a | 54.37 | 62.58 | 66.55 | 57.03 | 48.68 | 40.21 | a | 22.90 | a | 42.82 | ||||||||||
| 1927 | 24.93 | a | 29.89 | a | 33.90 | 38.45 | a | 48.47 | a | 55.97 | 63.65 | 61.16 | 58.57 | 52.58 | 43.72 | a | 29.06 | 45.03 | ||||||||
| 1928 | 26.20 | a | 22.86 | 29.06 | 36.80 | 46.74 | 54.90 | 62.47 | a | 63.83 | b | 53.70 | 45.68 | 37.07 | b | 31.19 | d | 42.54 | ||||||||
| 1929 | 22.03 | 24.67 | a | 32.45 | 38.80 | 48.39 | 57.47 | 60.58 | 59.19 | 55.00 | a | 42.90 | 37.37 | 26.68 | c | 42.13 | ||||||||||
| 1930 | 27.78 | d | 25.57 | 30.45 | 37.17 | 54.16 | 66.17 | 68.00 | 65.48 | ----- | z | 49.23 | 41.86 | a | 31.31 | e | 45.20 | a | ||||||||
| 1931 | 23.17 | a | 24.26 | a | 32.58 | 40.53 | 50.13 | 57.20 | 64.48 | 65.63 | a | 61.27 | 51.68 | 44.14 | a | 29.61 | 45.39 | |||||||||
| 1932 | 34.21 | b | 26.10 | 29.13 | 39.37 | 49.90 | 56.60 | 62.90 | 63.52 | 55.60 | 48.13 | 35.10 | 32.23 | 44.40 | ||||||||||||
| 1933 | 34.13 | 28.78 | a | 32.23 | 41.17 | 48.77 | 60.28 | a | 64.23 | 66.39 | 59.30 | 48.19 | 34.38 | a | 24.43 | a | 45.19 | |||||||||
| 1934 | 26.42 | 12.61 | 30.77 | 41.73 | 53.35 | 61.63 | 68.58 | 63.55 | 63.60 | 47.29 | 43.17 | a | 28.94 | 45.14 | ||||||||||||
| 1935 | 18.90 | b | 22.39 | 34.61 | ----- | z | 50.29 | 59.43 | 68.97 | 67.10 | 59.40 | 49.65 | 44.00 | 25.03 | a | 45.43 | a | |||||||||
| 1936 | 23.19 | 16.41 | b | 37.26 | ----- | z | 53.78 | v | 59.21 | a | 62.77 | 63.81 | 57.34 | a | 48.61 | 34.07 | 28.43 | a | 43.11 | b | ||||||
| 1937 | 31.80 | a | 27.04 | 27.32 | 37.33 | 51.77 | 59.63 | 65.45 | 67.65 | 56.93 | 47.00 | 38.30 | 26.32 | 44.71 | ||||||||||||
| 1938 | 22.68 | 25.61 | 31.61 | 39.73 | 46.65 | 55.63 | 62.68 | 65.45 | 58.70 | 50.58 | 38.79 | k | 29.87 | 44.47 | a | |||||||||||
| 1939 | 24.84 | 27.11 | 28.84 | 38.30 | 46.81 | 56.27 | 62.58 | 67.65 | 56.03 | a | 47.45 | 35.03 | 28.71 | 43.30 | ||||||||||||
| 1940 | 16.68 | 23.97 | 26.16 | 35.53 | 49.81 | 57.40 | 64.29 | 61.06 | 56.87 | 43.97 | 38.40 | 28.40 | a | 41.88 | ||||||||||||
| 1941 | 21.23 | 23.21 | 27.10 | 41.83 | 51.23 | 60.40 | 65.84 | 64.00 | 58.40 | 49.10 | 41.73 | 30.03 | 44.51 | |||||||||||||
| 1942 | 21.87 | 21.14 | 34.00 | 40.33 | 51.81 | 59.10 | 64.26 | 63.45 | 57.60 | 49.48 | 38.53 | 23.55 | 43.76 | |||||||||||||
| 1943 | 22.57 | a | 23.96 | 30.84 | 35.27 | 50.42 | 61.50 | 65.87 | 63.97 | 57.40 | 49.71 | 38.28 | a | 22.06 | 43.49 | |||||||||||
| 1944 | 26.52 | 23.90 | 29.65 | 38.77 | 51.48 | 59.20 | 66.16 | 65.16 | 59.63 | 47.68 | 38.97 | 25.74 | 44.40 | |||||||||||||
| 1945 | 17.58 | 24.64 | 36.58 | 43.03 | 46.48 | 55.57 | 63.06 | 59.77 | 58.23 | 44.19 | 38.27 | 23.52 | 42.58 | |||||||||||||
| 1946 | 23.55 | 21.71 | 36.03 | 38.10 | 48.52 | 57.17 | 62.10 | 62.13 | 59.73 | 51.58 | 43.60 | 31.23 | 44.62 | |||||||||||||
| 1947 | 30.40 | a | 22.82 | 31.97 | 40.10 | 48.23 | 55.43 | 66.81 | 64.65 | 57.50 | 53.06 | 36.97 | 26.10 | 44.50 | ||||||||||||
| 1948 | 20.42 | 22.55 | 30.87 | 38.83 | 47.42 | 54.40 | 63.10 | 63.84 | 55.10 | 46.26 | 43.17 | 30.65 | 43.05 | |||||||||||||
| 1949 | 30.42 | 28.89 | 32.58 | 42.13 | 49.84 | 61.17 | 66.77 | 65.16 | 55.67 | 51.61 | 38.03 | 32.52 | 46.23 | |||||||||||||
| 1950 | 32.55 | 24.71 | 28.29 | 39.27 | 47.77 | 57.34 | a | 63.97 | 62.58 | 54.14 | b | 48.42 | 41.90 | 30.81 | 44.31 | |||||||||||
| 1951 | 29.87 | 28.92 | d | 33.77 | 42.60 | 49.90 | 58.77 | 65.16 | 62.87 | 59.00 | 49.74 | 36.97 | 31.71 | 45.77 | ||||||||||||
| 1952 | 29.45 | 29.41 | 34.13 | 44.07 | 50.71 | 61.17 | 67.90 | 63.61 | 56.47 | 44.71 | 39.13 | 31.42 | 46.02 | |||||||||||||
| 1953 | 31.00 | 30.32 | 33.70 | a | 42.57 | 49.68 | 57.97 | 62.87 | a | 61.94 | 58.07 | 48.97 | 42.63 | 34.45 | 46.18 | |||||||||||
| 1954 | 23.68 | 31.48 | a | 33.03 | 41.63 | 50.65 | 56.17 | 61.03 | 59.40 | a | 55.50 | 51.26 | 38.57 | 30.03 | 44.37 | |||||||||||
| 1955 | 24.87 | 26.82 | 32.97 | 42.57 | 51.65 | 57.13 | g | 69.16 | 68.37 | a | 59.40 | 52.52 | 38.36 | b | 22.40 | a | 44.46 | a | ||||||||
| 1956 | 26.68 | 28.14 | 28.37 | d | 38.08 | d | 45.04 | d | 60.15 | d | 63.73 | i | 64.10 | 54.67 | c | 47.50 | a | 38.83 | 32.16 | 42.16 | a | |||||
| 1957 | 19.17 | b | 29.82 | 33.13 | 41.70 | 50.74 | 62.59 | a | 65.59 | b | 62.28 | b | 59.07 | 48.08 | f | 41.50 | b | 34.39 | 45.45 | a | ||||||
| 1958 | 27.10 | 20.50 | 34.87 | a | 42.50 | 48.80 | a | 56.70 | 65.84 | 64.61 | 57.63 | 47.00 | 40.27 | 21.42 | 43.94 | |||||||||||
| 1959 | 22.61 | 20.82 | 30.67 | a | 41.33 | 51.81 | 57.80 | 66.48 | 66.94 | 61.40 | 49.11 | c | 37.37 | c | 32.20 | a | 44.88 | |||||||||
| 1960 | 27.10 | 31.21 | 27.26 | 41.93 | 52.42 | 60.77 | 64.84 | 64.94 | 56.88 | f | 48.35 | 41.67 | 23.65 | 44.01 | a | |||||||||||
| 1961 | 20.61 | 25.89 | a | 31.84 | 39.63 | 48.87 | 59.47 | 66.03 | 65.55 | 62.60 | 51.48 | 40.00 | 29.29 | 45.11 | ||||||||||||
| 1962 | 24.23 | 22.46 | 32.52 | 40.60 | 49.97 | 59.80 | 62.54 | c | 64.13 | a | 55.10 | 47.71 | 36.43 | 24.19 | 43.31 | |||||||||||
| 1963 | 23.97 | a | 20.32 | 34.10 | 41.10 | 49.48 | 60.20 | 66.68 | 63.71 | 54.13 | 49.80 | a | 43.00 | a | 22.81 | 44.11 | ||||||||||
| 1964 | 26.94 | 24.14 | 33.23 | 40.20 | 52.19 | 59.07 | a | 65.35 | 61.19 | 57.40 | 47.10 | 39.63 | 29.97 | 44.70 | ||||||||||||
| 1965 | 21.90 | 23.39 | 31.55 | 38.87 | 51.74 | 58.67 | 65.50 | a | 65.74 | 58.00 | 47.06 | 36.70 | 31.23 | 44.20 | ||||||||||||
| 1966 | 24.10 | 26.43 | 33.87 | 39.20 | 49.00 | 59.37 | 66.35 | 65.81 | 56.87 | 47.03 | 41.77 | 28.90 | 44.89 | |||||||||||||
| 1967 | 30.81 | 20.93 | 29.26 | 38.50 | 45.52 | 58.63 | 67.48 | 65.85 | d | 57.00 | 48.45 | b | 36.89 | b | 30.28 | b | 44.13 | |||||||||
| 1968 | 19.97 | a | 21.03 | 33.69 | b | 42.53 | 49.68 | 58.47 | 67.42 | 64.77 | 59.20 | 51.65 | 39.17 | a | 26.32 | 44.49 | ||||||||||
| 1969 | 25.87 | 28.14 | 31.45 | 42.67 | 51.68 | 61.27 | 65.87 | 67.00 | 58.73 | 48.35 | 40.50 | 28.03 | 45.80 | |||||||||||||
| 1970 | 17.81 | 26.43 | 31.55 | 41.53 | 51.81 | 59.97 | 68.48 | 66.45 | 59.37 | 50.74 | 42.23 | 25.58 | 45.16 | |||||||||||||
| 1971 | 19.58 | 27.79 | 32.65 | 39.00 | 50.90 | 60.20 | 67.97 | 66.26 | 63.03 | 53.87 | 36.97 | 31.42 | 45.80 | |||||||||||||
| 1972 | 26.74 | 23.00 | 31.06 | 37.80 | 50.45 | 58.67 | 66.74 | 65.32 | 59.13 | 42.50 | c | 38.10 | 32.55 | 44.34 | ||||||||||||
| 1973 | 27.23 | 25.86 | 39.16 | 43.83 | 52.42 | 64.47 | 68.58 | 69.45 | 59.73 | 51.23 | 41.07 | 34.61 | 48.14 | |||||||||||||
| 1974 | 29.03 | 26.25 | ----- | z | 44.61 | l | 51.32 | 61.17 | 67.23 | 68.48 | 61.37 | 46.26 | 41.87 | 34.62 | b | 48.76 | b | |||||||||
| 1975 | 33.13 | 29.54 | 33.71 | 40.30 | 55.48 | 62.57 | 70.15 | d | 68.90 | 60.00 | 53.65 | 47.57 | 32.10 | 48.92 | ||||||||||||
| 1976 | 22.52 | 31.71 | v | 32.42 | 42.40 | 48.77 | a | 59.10 | 63.77 | 62.77 | 56.17 | 44.77 | 33.63 | 21.03 | 44.31 | a | ||||||||||
| 1977 | 17.13 | 23.43 | 34.84 | 39.47 | 50.16 | 57.67 | 65.35 | 65.48 | 58.30 | 47.45 | 41.33 | 26.90 | 43.96 | |||||||||||||
| 1978 | 21.58 | 19.39 | 28.42 | 38.93 | 49.42 | 58.67 | 63.24 | b | 65.68 | 52.87 | 45.97 | 37.87 | 30.06 | 42.67 | ||||||||||||
| 1979 | 26.00 | 17.00 | 34.77 | 40.70 | 54.32 | 57.00 | 65.55 | 64.19 | 56.80 | 46.55 | 42.70 | 30.74 | 44.69 | |||||||||||||
| 1980 | 23.68 | 20.55 | 29.65 | 41.50 | 50.19 | 55.80 | 65.94 | 66.23 | 58.67 | 45.13 | 34.83 | 21.06 | 42.77 | |||||||||||||
| 1981 | 13.58 | 28.29 | 30.35 | 41.37 | 49.48 | 60.23 | 65.68 | 61.97 | 54.93 | 43.87 | 37.37 | 27.90 | 42.92 | |||||||||||||
| 1982 | 12.05 | j | 23.15 | h | 29.52 | 35.26 | g | 48.22 | d | 54.67 | 63.77 | 59.87 | h | 55.78 | g | 44.28 | m | 39.52 | a | 33.50 | g | 47.14 | g | |||
| 1983 | 25.45 | 26.39 | 33.45 | 39.48 | c | 46.90 | a | 57.90 | 64.13 | 63.19 | 58.57 | 46.92 | f | 40.21 | a | 26.77 | 43.86 | a | ||||||||
| 1984 | 21.81 | 27.70 | i | 26.26 | 38.37 | 48.35 | 58.67 | 63.94 | 65.42 | 53.73 | 48.81 | 37.53 | 33.10 | 45.09 | a | |||||||||||
| 1985 | 19.77 | a | ----- | z | 33.83 | b | 43.67 | 48.10 | 54.67 | 64.10 | 63.67 | d | 57.43 | 49.16 | 44.63 | 23.83 | b | 45.71 | a | |||||||
| 1986 | 25.81 | 26.32 | 33.48 | 43.70 | 51.06 | 57.60 | 63.19 | 62.87 | 55.46 | f | 47.87 | 35.66 | a | 31.84 | 43.58 | a | ||||||||||
| 1987 | 24.55 | k | 23.25 | 33.12 | g | 40.38 | a | 48.55 | 60.00 | d | 64.87 | 62.35 | 58.43 | 43.87 | a | 34.70 | 27.97 | 46.44 | b | |||||||
| 1988 | 19.32 | 23.17 | 29.39 | 38.93 | a | 49.10 | 57.57 | 66.00 | 67.52 | 55.67 | 42.55 | 38.40 | 23.94 | 42.63 | ||||||||||||
| 1989 | 24.90 | 21.44 | a | 29.81 | 37.04 | d | 50.30 | a | 60.30 | 64.10 | 65.42 | 58.30 | 47.16 | 35.93 | 12.19 | 42.24 | ||||||||||
| 1990 | 27.77 | i | 21.78 | j | 29.67 | a | 38.97 | a | 47.26 | 58.73 | 65.29 | c | 67.26 | 57.20 | 50.27 | i | 36.17 | g | 28.47 | l | 52.05 | e | ||||
| 1991 | 18.05 | k | 25.50 | h | 31.88 | f | 41.40 | e | 51.50 | e | 58.75 | f | 65.77 | a | 66.74 | 55.90 | 49.52 | 38.60 | 27.37 | a | 49.60 | d | ||||
| 1992 | 21.65 | 22.79 | 26.06 | 36.27 | 45.53 | a | 57.87 | 62.71 | 63.60 | a | 56.87 | 44.00 | 35.57 | 27.55 | 41.71 | |||||||||||
| 1993 | 23.52 | 16.00 | 26.86 | b | 39.03 | 50.74 | 58.97 | 66.61 | 65.94 | 57.52 | a | 44.87 | a | 36.60 | 26.45 | 42.76 | ||||||||||
| 1994 | 13.42 | 18.29 | 29.19 | 41.53 | 47.23 | a | 61.73 | 70.58 | 63.32 | 56.77 | 46.19 | 40.47 | 30.26 | 43.25 | ||||||||||||
| 1995 | 27.87 | 19.39 | ----- | z | ----- | z | 47.53 | a | 58.87 | 68.29 | 64.23 | 55.83 | 50.27 | a | 34.03 | 21.39 | 44.77 | b | ||||||||
| 1996 | 20.39 | c | 21.03 | 26.13 | 39.14 | a | 47.84 | 60.31 | a | 64.45 | 63.62 | b | 58.23 | 44.69 | b | 31.30 | c | 32.39 | 42.46 | |||||||
| 1997 | 20.48 | 27.96 | a | 28.60 | a | 38.66 | a | 47.32 | 58.50 | 65.55 | 64.37 | a | 57.17 | a | 44.81 | 35.13 | 26.59 | d | 42.93 | |||||||
| 1998 | 28.50 | a | 29.86 | 31.80 | a | 41.04 | d | 51.43 | a | 58.90 | 66.37 | a | 65.77 | 59.50 | b | 46.72 | b | 37.21 | a | 31.58 | 45.72 | |||||
| 1999 | 21.84 | 24.37 | a | 29.60 | a | 39.97 | 50.63 | a | 62.10 | 68.80 | a | 65.87 | 61.33 | 45.52 | b | 39.53 | 29.59 | b | 44.93 | |||||||
| 2000 | 19.38 | g | 26.83 | 33.77 | 38.64 | b | 49.03 | 58.93 | a | 64.14 | b | 64.61 | 56.03 | a | 45.94 | 37.04 | c | 20.97 | b | 45.08 | a | |||||
| 2001 | 21.72 | b | 23.08 | c | 29.48 | 39.10 | a | 51.14 | b | 63.73 | 63.27 | a | 68.83 | a | 59.30 | 48.83 | b | 41.43 | 33.56 | d | 45.29 | |||||
| 2002 | 30.04 | c | 26.42 | b | 31.90 | 41.55 | a | 48.57 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.70 | g | |
| 2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 23.57 | 23.28 | 30.98 | 39.52 | 49.22 | 58.26 | 64.71 | 63.78 | 57.08 | 47.19 | 38.02 | 27.42 | 43.56 | |||||||||||||
| S.D. | 4.81 | 4.30 | 3.03 | 2.27 | 2.20 | 2.55 | 2.29 | 2.67 | 2.54 | 3.07 | 3.56 | 4.44 | 2.00 | |||||||||||||
| SKEW | -0.06 | -0.22 | -0.05 | -0.15 | 0.09 | 0.09 | 0.09 | -0.32 | -0.14 | -0.21 | -0.23 | -0.56 | -0.51 | |||||||||||||
| MAX | 34.21 | 33.86 | 39.16 | 44.07 | 55.48 | 66.17 | 70.58 | 69.45 | 63.60 | 53.87 | 47.57 | 36.33 | 48.92 | |||||||||||||
| MIN | 12.74 | 12.61 | 24.00 | 33.73 | 44.00 | 51.77 | 59.23 | 56.45 | 49.20 | 38.58 | 27.67 | 12.19 | 36.95 | |||||||||||||
| YRS | 100 | 102 | 102 | 100 | 106 | 104 | 105 | 103 | 100 | 99 | 101 | 101 | 75 | |||||||||||||