YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1902 | ----- | z | ----- | z | ----- | z | 70.97 | a | 75.97 | 89.70 | 89.48 | 86.71 | 82.90 | a | ----- | z | ----- | z | ----- | z | 82.62 | f | ||||
1903 | ----- | z | ----- | z | 65.35 | 65.10 | 76.26 | 86.60 | 90.84 | ----- | z | ----- | z | 79.07 | q | 70.52 | a | ----- | z | 75.78 | f | |||||
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 85.19 | j | 81.57 | 64.92 | e | 67.23 | 53.87 | h | 71.24 | i | ||
1917 | 39.50 | k | 47.68 | 56.56 | f | 65.90 | 68.16 | 88.20 | 91.03 | 87.68 | 84.17 | 81.16 | 75.20 | 68.16 | 75.73 | b | ||||||||||
1918 | 51.03 | 53.75 | 59.90 | 67.60 | 72.42 | 92.14 | a | 88.10 | 85.52 | 84.77 | 72.06 | 55.67 | 48.29 | 69.27 | ||||||||||||
1919 | 48.61 | 46.04 | 56.19 | 71.21 | a | 78.39 | 89.33 | c | 85.80 | a | 89.19 | 82.00 | 64.93 | a | 58.33 | 52.29 | 68.53 | |||||||||
1920 | 53.58 | 54.55 | 56.39 | 62.93 | 76.10 | 84.60 | 92.29 | 87.45 | 80.97 | 68.94 | 60.43 | 51.03 | a | 69.11 | ||||||||||||
1921 | 52.81 | 59.57 | 65.10 | 68.57 | b | 73.87 | a | 87.07 | 89.19 | 84.74 | 84.23 | 78.30 | a | 65.50 | 56.45 | 72.12 | ||||||||||
1922 | 49.10 | 50.61 | 56.90 | 64.13 | 78.90 | 89.40 | 91.97 | 86.94 | 86.43 | 77.39 | 57.83 | 54.77 | 70.36 | |||||||||||||
1923 | 56.19 | 51.82 | 57.65 | 65.50 | 79.97 | 84.10 | 90.39 | 85.42 | 81.77 | 72.32 | 66.45 | a | 51.39 | 70.25 | ||||||||||||
1924 | 50.84 | 62.34 | 54.58 | 66.67 | 80.23 | 92.27 | 89.32 | 91.42 | 84.03 | 73.26 | 66.00 | 46.35 | 71.44 | |||||||||||||
1925 | 48.16 | 62.79 | 66.52 | 72.17 | 82.65 | 84.17 | 90.48 | 86.42 | 81.39 | g | 69.26 | 61.73 | 55.00 | 70.85 | a | |||||||||||
1926 | 52.74 | 57.75 | 62.45 | 66.33 | 72.42 | 92.90 | 95.35 | e | 92.71 | 88.07 | 75.97 | a | 65.23 | 58.10 | 73.33 | |||||||||||
1927 | 52.71 | 56.68 | 60.71 | 67.73 | 79.56 | o | 84.83 | 93.94 | 87.10 | 80.50 | 74.68 | 63.27 | 45.13 | a | 69.75 | a | ||||||||||
1928 | 58.55 | 53.66 | 61.94 | 68.33 | 80.06 | 92.97 | a | 94.32 | 91.06 | 86.83 | 75.29 | 57.97 | 52.48 | 72.79 | ||||||||||||
1929 | 50.65 | 52.64 | 63.39 | 67.90 | 81.35 | ----- | z | ----- | z | ----- | z | ----- | z | 75.42 | e | 64.50 | 61.76 | b | 64.70 | d | ||||||
1930 | 44.55 | 63.82 | 61.61 | 73.37 | 71.48 | 89.30 | 88.45 | 87.35 | 82.70 | 74.32 | 60.70 | 54.52 | 71.01 | |||||||||||||
1931 | 54.29 | 54.93 | 66.58 | 71.80 | 80.71 | 87.73 | 95.06 | 88.61 | 82.57 | 75.43 | a | 53.47 | 43.26 | 71.20 | ||||||||||||
1932 | 43.87 | 51.86 | 64.32 | 71.07 | 77.74 | 86.47 | 91.61 | 91.48 | 89.37 | 76.13 | 68.57 | 43.52 | 71.33 | |||||||||||||
1933 | 42.77 | 47.82 | 65.52 | 66.53 | 72.55 | 88.93 | 93.87 | 91.32 | 85.83 | 77.81 | 67.47 | 58.23 | 71.55 | |||||||||||||
1934 | 56.68 | 60.68 | 72.26 | 75.70 | 84.97 | a | 86.10 | 94.03 | 88.65 | 85.83 | 80.26 | 62.47 | 56.06 | 75.31 | ||||||||||||
1935 | 51.03 | 57.75 | 59.32 | 69.17 | 73.00 | 91.60 | 90.94 | 89.16 | 84.23 | 74.90 | 61.13 | 54.74 | 71.42 | |||||||||||||
1936 | 54.71 | 53.28 | 64.58 | 73.83 | 83.45 | 91.87 | 92.03 | 88.32 | c | 80.24 | a | 74.97 | 64.47 | 52.00 | 72.81 | |||||||||||
1937 | 33.65 | 52.11 | 58.39 | 70.47 | 81.61 | 86.10 | 91.87 | 94.03 | 87.83 | 79.52 | 67.07 | 56.10 | 71.56 | |||||||||||||
1938 | 55.90 | 52.57 | 57.90 | 71.17 | 77.77 | a | 88.20 | 91.32 | 90.26 | 87.90 | 76.16 | 61.33 | 55.16 | 72.14 | ||||||||||||
1939 | 51.58 | 44.57 | 62.74 | 74.30 | 80.65 | 89.07 | 94.19 | 90.77 | 78.10 | 75.65 | 65.37 | 61.13 | 72.34 | |||||||||||||
1940 | 53.71 | 55.24 | 66.52 | 69.83 | 81.77 | 90.87 | 93.61 | 92.26 | 79.30 | 72.87 | 59.90 | 54.26 | 72.51 | |||||||||||||
1941 | 50.74 | 56.46 | 59.32 | 60.17 | 76.10 | 83.60 | 90.87 | 86.16 | 80.80 | 67.13 | a | 65.37 | 52.45 | 69.10 | ||||||||||||
1942 | 53.42 | 50.75 | 60.71 | 68.63 | 77.03 | 88.67 | 94.16 | 91.87 | 88.63 | 74.94 | 67.80 | 58.81 | 72.95 | |||||||||||||
1943 | 54.61 | 61.61 | 62.58 | 72.10 | 86.45 | t | 85.67 | 93.06 | 89.40 | a | 87.37 | 74.61 | 66.67 | 50.90 | 72.60 | a | ||||||||||
1944 | 53.50 | g | 49.97 | 58.90 | 63.93 | 75.68 | 83.13 | 91.58 | 94.00 | 88.30 | 75.94 | 56.77 | 56.16 | 72.21 | a | |||||||||||
1945 | 54.52 | 57.07 | 55.00 | 69.30 | 78.32 | 86.67 | 93.19 | 89.10 | 87.03 | 75.77 | 64.40 | 52.17 | a | 71.88 | ||||||||||||
1946 | 52.32 | 58.50 | 64.06 | 73.31 | a | 77.65 | 90.60 | 90.97 | 88.16 | 87.00 | 68.62 | b | 58.43 | 59.84 | 72.46 | |||||||||||
1947 | 54.20 | a | 63.96 | 66.00 | 71.60 | 83.47 | a | 87.00 | 94.48 | 86.65 | 89.00 | a | 75.23 | 56.14 | a | 49.97 | 73.14 | |||||||||
1948 | 60.39 | 51.86 | 55.23 | 71.60 | 81.58 | 87.13 | 92.61 | 88.39 | 87.10 | 75.06 | 61.50 | 52.48 | 72.08 | |||||||||||||
1949 | 36.61 | 47.71 | 60.58 | 72.90 | 76.03 | 85.87 | 91.23 | 90.90 | 85.90 | 70.48 | 71.90 | 50.29 | 70.03 | |||||||||||||
1950 | 50.74 | 61.79 | 64.52 | 74.93 | 78.48 | 88.33 | 88.00 | 91.10 | 82.37 | 81.65 | 70.43 | 64.77 | a | 74.76 | ||||||||||||
1951 | 54.19 | 56.21 | 61.32 | 68.31 | a | 77.77 | 86.53 | 94.19 | 87.19 | 87.17 | 73.23 | 59.67 | 48.26 | 71.17 | ||||||||||||
1952 | 48.58 | 55.10 | 51.26 | 67.70 | 80.74 | 85.53 | 91.16 | 90.29 | 86.33 | 81.74 | 56.93 | 50.97 | 70.53 | |||||||||||||
1953 | 60.00 | 58.46 | 63.10 | 69.20 | 70.77 | 88.23 | 91.10 | 87.42 | 87.63 | 74.68 | 65.17 | 55.48 | 72.60 | |||||||||||||
1954 | 53.68 | 65.36 | 59.16 | 75.47 | 81.10 | 86.13 | 91.61 | 86.39 | 86.00 | 78.52 | 68.57 | 55.48 | 73.95 | |||||||||||||
1955 | 45.17 | b | 51.89 | 63.65 | 67.47 | 78.10 | b | 85.63 | 88.29 | 87.71 | 87.47 | 79.00 | 62.63 | c | 57.94 | 71.25 | ||||||||||
1956 | 56.39 | 50.93 | 66.94 | 68.03 | 80.19 | 90.50 | 89.68 | 87.50 | a | 90.67 | 74.97 | 66.03 | 57.90 | 73.31 | ||||||||||||
1957 | 48.84 | 60.11 | 62.39 | 69.03 | 73.39 | 90.00 | 93.19 | 87.77 | a | 87.03 | 70.58 | 57.67 | 59.48 | 71.62 | ||||||||||||
1958 | 56.81 | 59.46 | d | 53.10 | 69.57 | 85.94 | 90.70 | 94.23 | a | 94.29 | 82.53 | 76.68 | 61.67 | 64.65 | 74.13 | |||||||||||
1959 | 58.87 | a | 52.54 | 65.87 | 73.13 | 79.60 | a | 92.07 | a | 95.71 | 87.23 | 85.90 | 77.10 | j | 67.38 | d | 56.55 | 74.08 | a | |||||||
1960 | 44.40 | a | 51.48 | 67.10 | 73.60 | 79.74 | 92.23 | 96.16 | 93.42 | 87.10 | 72.48 | 64.37 | ----- | z | 74.74 | a | ||||||||||
1961 | 62.70 | h | 61.74 | a | 65.13 | 73.40 | e | 78.81 | 92.66 | a | 94.57 | a | 87.83 | a | 80.59 | a | 72.58 | 58.04 | b | 49.29 | 74.06 | a | ||||
1962 | 50.39 | 53.82 | 55.43 | j | 76.73 | 75.70 | a | 88.53 | 90.81 | 93.13 | 85.97 | 75.32 | 66.50 | 60.19 | 74.28 | a | ||||||||||
1963 | 51.53 | a | 64.54 | b | 61.00 | a | 66.83 | a | 81.61 | 84.90 | 94.42 | 86.58 | 86.59 | a | 76.84 | 62.27 | 58.03 | 72.93 | ||||||||
1964 | 51.94 | 54.69 | c | 56.93 | d | 64.07 | a | 74.23 | 83.83 | 92.13 | 87.29 | 83.90 | 81.81 | 58.57 | 51.19 | 70.05 | ||||||||||
1965 | 56.52 | 55.14 | 57.48 | 63.33 | 73.06 | 81.21 | a | 89.29 | 90.00 | a | 80.87 | 80.16 | 62.67 | 51.47 | a | 70.10 | ||||||||||
1966 | 50.52 | 49.71 | 66.55 | 74.37 | 82.37 | a | 88.70 | 91.06 | 90.48 | 84.60 | 74.74 | 64.28 | a | 53.94 | 72.61 | |||||||||||
1967 | 55.23 | 62.79 | 66.48 | b | 63.83 | 76.39 | h | 81.95 | k | 89.75 | c | 85.97 | a | 81.97 | 77.48 | 65.83 | 45.19 | 69.45 | b | |||||||
1968 | 47.74 | 59.59 | 62.29 | 65.80 | 76.52 | 86.50 | ----- | z | 83.80 | a | 83.87 | 74.23 | 61.62 | a | 50.94 | 68.44 | a | |||||||||
1969 | 51.52 | 49.43 | 53.29 | 69.00 | 78.77 | 83.90 | 88.50 | a | 90.87 | 82.75 | b | 70.23 | 61.80 | 57.84 | 69.82 | |||||||||||
1970 | 54.23 | 58.96 | 55.00 | 61.10 | 78.45 | 86.37 | 90.66 | b | 88.19 | 79.50 | 68.81 | 63.97 | 48.83 | b | 69.50 | |||||||||||
1971 | 53.77 | 53.79 | 62.47 | a | 64.67 | 71.55 | b | 85.83 | 93.14 | b | 83.50 | o | 81.73 | 66.74 | 58.50 | 42.73 | a | 66.81 | a | |||||||
1972 | 54.10 | 60.55 | 70.52 | 69.73 | 77.68 | 84.27 | 92.37 | d | 85.44 | o | 81.90 | 64.16 | 53.13 | 44.23 | e | 68.42 | a | |||||||||
1973 | 46.06 | 51.07 | a | 49.45 | 63.96 | f | 77.77 | 85.86 | b | 91.54 | e | 89.26 | l | 84.23 | 76.65 | 59.73 | 55.10 | a | 67.75 | b | ||||||
1974 | 47.23 | a | 54.78 | a | 61.87 | 67.61 | b | 80.00 | b | 92.62 | d | ----- | z | ----- | z | ----- | z | ----- | z | 61.90 | j | 50.89 | m | 67.35 | f | |
1975 | 52.91 | i | 56.19 | l | 57.32 | i | 59.62 | i | 73.85 | k | ----- | z | ----- | z | ----- | z | 86.65 | j | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | 67.37 | 78.52 | 88.50 | b | 86.61 | 87.90 | 76.14 | a | 67.36 | t | 56.64 | p | ----- | z | 80.84 | f | ||||
1987 | ----- | z | 40.04 | b | 41.60 | a | 59.32 | b | 76.45 | 91.20 | 90.90 | 87.65 | 86.30 | ----- | z | ----- | z | ----- | z | 71.68 | d | |||||
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 51.51 | 55.19 | 60.99 | 68.94 | 77.89 | 87.89 | 91.71 | 88.91 | 84.48 | 74.44 | 62.95 | 53.82 | 71.68 | |||||||||||||
S.D. | 5.15 | 5.40 | 5.38 | 3.96 | 3.71 | 2.91 | 2.30 | 2.51 | 3.12 | 4.24 | 4.57 | 5.52 | 1.58 | |||||||||||||
SKEW | -1.15 | -0.19 | -0.88 | -0.23 | -0.32 | 0.06 | -0.27 | 0.41 | -0.37 | -0.52 | 0.09 | 0.08 | 0.06 | |||||||||||||
MAX | 60.39 | 65.36 | 72.26 | 76.73 | 85.94 | 92.97 | 96.16 | 94.29 | 90.67 | 81.81 | 75.20 | 68.16 | 75.31 | |||||||||||||
MIN | 33.65 | 40.04 | 41.60 | 59.32 | 68.16 | 81.21 | 85.80 | 83.80 | 76.14 | 64.16 | 53.13 | 42.73 | 68.53 | |||||||||||||
YRS | 55 | 59 | 58 | 61 | 59 | 60 | 59 | 56 | 59 | 57 | 59 | 56 | 42 |