YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.17 | 58.00 | r | 61.17 | k | |
1905 | 40.97 | 36.65 | k | 62.10 | 65.00 | 77.72 | b | 85.63 | 85.39 | 90.23 | 86.57 | ----- | z | ----- | z | 48.29 | 71.32 | c | ||||||||
1906 | 52.03 | 55.86 | ----- | z | 71.70 | 76.87 | 83.89 | b | 86.87 | 88.45 | 86.73 | 69.39 | 54.24 | a | 60.87 | 71.54 | a | |||||||||
1907 | 56.90 | a | 66.50 | b | ----- | z | 74.07 | a | ----- | z | ----- | z | ----- | z | 93.00 | o | 88.40 | ----- | z | ----- | z | 64.26 | 70.03 | g | ||
1908 | ----- | z | ----- | z | 75.17 | b | 76.80 | ----- | z | 91.28 | a | 90.48 | ----- | z | ----- | z | ----- | z | ----- | z | 60.50 | c | 78.85 | g | ||
1909 | 58.70 | a | ----- | z | ----- | z | 76.73 | 82.55 | 89.63 | 94.67 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.90 | h | |||
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 82.88 | d | 75.10 | 60.86 | h | 52.73 | a | 70.24 | i | |
1963 | 47.19 | 58.86 | 67.26 | 78.03 | 85.94 | 87.37 | 95.23 | 88.70 | k | 84.23 | 81.39 | ----- | z | ----- | z | 76.17 | c | |||||||||
1964 | ----- | z | 44.62 | 63.70 | a | 74.95 | i | 84.29 | 89.14 | a | 95.68 | 92.48 | 81.76 | a | 75.74 | 60.17 | 54.00 | 74.16 | b | |||||||
1965 | 59.03 | a | 56.25 | 54.52 | 77.83 | 84.44 | f | 85.00 | 92.32 | 89.37 | l | 83.46 | b | 75.23 | 68.77 | 57.39 | 70.98 | b | ||||||||
1966 | 42.37 | a | 49.30 | a | 66.06 | 69.77 | 77.87 | 86.37 | 95.35 | 86.00 | 80.27 | 72.13 | 68.33 | 49.90 | 70.31 | |||||||||||
1967 | 55.26 | 55.46 | 70.86 | c | 74.80 | 79.10 | 86.80 | 88.97 | 90.27 | e | 80.37 | 76.77 | a | 60.35 | d | 47.77 | a | 72.23 | ||||||||
1968 | 48.83 | a | 49.62 | 60.42 | 68.40 | 74.73 | a | 86.80 | ----- | z | 88.26 | 81.93 | 75.13 | 57.80 | 51.39 | 67.57 | a | |||||||||
1969 | 55.90 | 51.71 | 49.23 | 72.57 | 78.16 | 85.40 | 95.65 | 93.77 | 79.67 | 65.23 | a | 58.95 | h | 54.45 | b | 71.07 | a | |||||||||
1970 | 47.71 | 58.12 | b | 54.23 | a | 69.31 | a | 82.06 | 87.83 | 91.72 | b | 91.72 | b | 82.37 | 66.28 | f | 59.50 | 59.06 | 71.24 | a | ||||||
1971 | 53.53 | a | 53.44 | a | 62.10 | a | 72.36 | b | 79.60 | a | 89.33 | 91.57 | a | 83.82 | c | 79.55 | a | 72.61 | 59.11 | b | 49.81 | 70.57 | ||||
1972 | 51.77 | a | 57.93 | 69.43 | a | 76.69 | d | 77.67 | a | 86.43 | 85.70 | a | 86.93 | a | 84.00 | 71.43 | a | 48.23 | 45.19 | 70.12 | ||||||
1973 | 41.74 | 51.21 | 58.27 | a | 61.97 | 75.68 | 87.93 | 91.07 | a | 92.65 | 81.20 | 77.06 | 66.47 | 57.32 | 70.21 | |||||||||||
1974 | 47.81 | 58.21 | 68.07 | a | 74.76 | a | 87.52 | 87.77 | 95.00 | 86.58 | 73.87 | 69.29 | 60.03 | 50.55 | 71.62 | |||||||||||
1975 | 52.61 | 48.68 | 59.32 | 70.53 | 78.42 | 85.83 | 86.29 | 88.87 | 77.28 | l | 78.32 | 61.27 | 56.03 | 69.65 | a | |||||||||||
1976 | 54.77 | a | 64.22 | k | 70.81 | e | 70.87 | 74.57 | c | 87.47 | 87.65 | 92.26 | 81.77 | 66.81 | 56.21 | a | 53.90 | a | 72.46 | a | ||||||
1977 | 42.52 | 57.32 | 64.39 | 68.63 | 77.42 | 89.20 | 92.58 | 88.61 | 87.17 | 75.19 | 64.00 | 54.77 | 71.82 | |||||||||||||
1978 | 40.77 | 37.25 | 60.81 | 77.50 | 76.32 | 87.43 | 96.39 | 90.06 | 84.10 | 74.13 | 55.80 | 47.45 | 69.00 | |||||||||||||
1979 | 34.35 | 50.46 | 58.29 | 67.83 | 75.77 | 84.07 | 90.52 | 86.90 | 85.00 | 79.23 | 54.13 | 53.13 | 68.31 | |||||||||||||
1980 | 46.90 | 50.93 | 59.87 | 69.58 | d | 76.26 | 93.67 | 97.42 | 92.45 | 83.50 | 72.71 | 58.43 | 56.10 | b | 71.49 | |||||||||||
1981 | 53.39 | 56.64 | 59.68 | c | 78.72 | a | 79.97 | b | 92.73 | 93.55 | 86.84 | 84.48 | c | 69.63 | a | 62.70 | 55.32 | 72.80 | ||||||||
1982 | 57.72 | b | 49.41 | a | 64.32 | 70.20 | 77.97 | 85.50 | 91.97 | 93.71 | 86.07 | 71.90 | a | 59.60 | 48.84 | 71.43 | ||||||||||
1983 | 45.06 | 47.04 | a | 58.35 | 64.20 | 78.03 | b | 83.10 | a | 94.37 | a | 95.14 | b | 86.93 | b | ----- | z | 57.69 | n | 35.39 | 68.76 | b | ||||
1984 | 45.32 | 56.97 | 58.13 | 65.57 | 82.06 | 88.03 | 89.71 | 90.16 | 81.00 | 67.61 | 58.13 | 51.68 | 69.53 | |||||||||||||
1985 | 44.45 | 48.04 | a | 60.65 | 74.07 | 82.76 | b | 85.17 | 93.94 | 92.45 | 81.43 | 68.35 | 56.67 | 47.26 | 69.60 | |||||||||||
1986 | 59.10 | 54.86 | 67.77 | 74.50 | 79.87 | 84.90 | 95.35 | 88.74 | 79.67 | 66.71 | 56.00 | c | 48.68 | 71.35 | ||||||||||||
1987 | 46.13 | 53.21 | 57.19 | 71.47 | 78.10 | 85.13 | 88.39 | 88.52 | 80.63 | 73.61 | 60.50 | 47.03 | 69.16 | |||||||||||||
1988 | 44.23 | 55.62 | 61.39 | 68.70 | 77.10 | 86.70 | 88.29 | 89.65 | 81.63 | ----- | z | ----- | z | 52.45 | t | 72.59 | c | |||||||||
1989 | 56.68 | 43.48 | a | 67.58 | 75.57 | 79.26 | 80.58 | d | 89.68 | 87.26 | 80.21 | b | 76.71 | 65.73 | 44.50 | c | 70.60 | |||||||||
1990 | 53.32 | 56.25 | 57.74 | 67.38 | a | 75.19 | 95.85 | d | 87.55 | 88.61 | 84.77 | 71.67 | m | 63.13 | 46.74 | d | 70.59 | a | ||||||||
1991 | 43.19 | 61.64 | 64.06 | 73.70 | 81.10 | 84.50 | 87.50 | c | 86.10 | 74.97 | 72.39 | 50.63 | 47.90 | 68.97 | ||||||||||||
1992 | 48.03 | 57.41 | 64.68 | 69.90 | 73.81 | 80.40 | 87.39 | 83.43 | c | 81.43 | b | 74.42 | 51.60 | 45.55 | 68.17 | |||||||||||
1993 | 41.61 | 48.18 | 58.90 | 68.53 | 75.97 | 85.90 | 91.90 | j | 87.00 | 82.00 | 69.90 | 54.67 | 52.94 | 65.96 | a | |||||||||||
1994 | 52.03 | a | 51.22 | a | 63.32 | 70.00 | 75.06 | 93.47 | 91.13 | 90.00 | 82.17 | 72.55 | 59.55 | a | 55.65 | 71.35 | ||||||||||
1995 | 50.35 | 57.71 | 60.39 | 69.00 | 73.03 | 82.73 | 90.26 | 89.10 | 77.59 | c | 72.87 | 63.97 | 53.18 | c | 70.02 | |||||||||||
1996 | 50.97 | 57.69 | 58.97 | 72.67 | 86.82 | c | 88.10 | 89.96 | d | 84.45 | 78.48 | c | 70.81 | 58.23 | 52.84 | 70.83 | ||||||||||
1997 | 46.68 | 48.29 | 66.45 | 60.77 | 74.48 | 82.38 | d | 89.97 | 87.48 | 82.83 | 70.30 | a | 54.70 | 43.10 | a | 67.29 | ||||||||||
1998 | 51.26 | d | 51.57 | 55.16 | 65.60 | e | 84.03 | 92.00 | 95.72 | f | 89.74 | 89.03 | 72.48 | 59.87 | 50.55 | 69.21 | a | |||||||||
1999 | 53.83 | b | 62.69 | b | 57.65 | 68.96 | e | 73.65 | 83.73 | 87.43 | q | 91.84 | 80.23 | d | ----- | z | 69.50 | 51.35 | k | 71.34 | c | |||||
2000 | ----- | z | 64.00 | g | 68.38 | o | 64.50 | t | 87.77 | r | 86.89 | k | ----- | z | 93.86 | x | 92.14 | w | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 90.03 | a | 82.00 | 73.55 | 61.90 | 54.30 | a | 72.36 | g | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 49.38 | 53.41 | 61.98 | 71.10 | 78.64 | 86.96 | 91.13 | 89.23 | 82.35 | 72.76 | 59.47 | 51.66 | 70.29 | |||||||||||||
S.D. | 6.02 | 5.71 | 5.29 | 4.43 | 3.72 | 3.42 | 3.34 | 2.80 | 3.24 | 3.70 | 4.94 | 5.48 | 1.40 | |||||||||||||
SKEW | -0.22 | -0.36 | 0.22 | -0.22 | 0.73 | 0.53 | 0.11 | -0.01 | -0.21 | 0.08 | 0.03 | -0.28 | -0.29 | |||||||||||||
MAX | 59.10 | 66.50 | 75.17 | 78.72 | 87.52 | 95.85 | 97.42 | 95.14 | 89.03 | 81.39 | 69.50 | 64.26 | 72.80 | |||||||||||||
MIN | 34.35 | 37.25 | 49.23 | 60.77 | 73.03 | 80.40 | 85.39 | 83.43 | 73.87 | 65.23 | 48.23 | 35.39 | 67.29 | |||||||||||||
YRS | 40 | 38 | 39 | 41 | 39 | 41 | 36 | 38 | 41 | 35 | 36 | 40 | 23 |