YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | 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 | 51.75 | o | ----- | z |
1921 | 51.39 | 53.55 | 57.21 | 55.98 | 58.84 | 63.93 | 70.76 | 70.37 | 66.43 | 64.29 | 59.00 | 57.05 | 60.73 | |||||||||||||
1922 | 50.29 | 52.77 | 53.60 | 55.22 | 61.55 | 65.95 | 69.52 | 71.29 | 71.00 | 62.10 | 55.02 | 55.68 | 60.33 | |||||||||||||
1923 | 53.69 | 53.23 | 56.21 | 58.17 | 62.92 | 62.52 | 68.79 | 69.31 | 68.38 | 62.82 | 60.55 | 54.08 | 60.89 | |||||||||||||
1924 | 52.45 | a | 58.34 | 54.68 | 58.90 | 63.13 | 66.75 | 68.52 | 68.37 | 68.05 | 59.73 | 58.33 | 52.24 | 60.79 | ||||||||||||
1925 | 52.21 | 54.98 | 57.48 | 61.95 | 65.15 | 68.43 | 72.45 | 71.23 | 66.98 | 62.11 | 58.25 | 58.81 | 62.50 | |||||||||||||
1926 | 55.31 | 58.52 | 61.45 | 62.92 | 64.16 | 68.23 | 69.13 | 70.98 | 65.80 | 64.58 | 61.05 | 53.06 | 62.93 | |||||||||||||
1927 | 53.44 | 55.48 | 55.85 | 57.72 | 62.18 | 64.28 | 69.97 | 68.35 | 66.41 | c | 64.13 | 62.25 | 54.39 | 61.20 | ||||||||||||
1928 | 56.24 | 56.19 | 58.48 | 59.05 | 62.96 | h | 64.78 | 69.15 | 61.90 | 67.75 | 61.56 | 59.60 | 55.53 | 60.93 | a | |||||||||||
1929 | 52.63 | 52.02 | 54.94 | 58.10 | 64.61 | 67.20 | 70.81 | 73.56 | 69.08 | 67.29 | 60.79 | a | 59.47 | 62.54 | ||||||||||||
1930 | 53.69 | 57.70 | 58.94 | 61.75 | 61.26 | 66.40 | 71.23 | 71.19 | 66.88 | 64.15 | 61.50 | 54.29 | 62.41 | |||||||||||||
1931 | 56.42 | 57.84 | 62.10 | 63.80 | 66.62 | a | 69.45 | 75.97 | 74.21 | 67.75 | b | 65.50 | 56.73 | 52.34 | 64.06 | |||||||||||
1932 | 50.52 | 54.17 | 59.23 | 59.67 | 63.06 | 65.07 | 67.48 | 67.23 | 66.20 | 64.10 | e | 62.48 | a | 52.34 | 60.96 | |||||||||||
1933 | 51.19 | 52.55 | 56.45 | 57.98 | 58.58 | 63.10 | 66.87 | 67.94 | 63.02 | 63.81 | 61.12 | 53.50 | 59.68 | |||||||||||||
1934 | 55.39 | 57.34 | 61.52 | 62.48 | 65.63 | 65.52 | 70.53 | 68.79 | 69.08 | 63.98 | 59.32 | 56.94 | 63.04 | |||||||||||||
1935 | 53.94 | 57.02 | 53.92 | 59.25 | 61.73 | 65.45 | 69.45 | c | 72.65 | a | 69.43 | 65.67 | m | 58.44 | e | 56.95 | 61.66 | a | ||||||||
1936 | 57.15 | 55.93 | 58.52 | 59.45 | 65.05 | 68.38 | 73.43 | a | 72.61 | 69.72 | 66.81 | 64.28 | 56.85 | d | 64.01 | |||||||||||
1937 | 46.98 | b | 54.62 | 57.61 | 60.62 | 63.53 | 66.43 | 70.79 | 70.71 | 71.97 | 65.95 | a | 60.02 | 59.15 | 62.37 | |||||||||||
1938 | 58.15 | 55.84 | 56.58 | 59.78 | 62.85 | 64.47 | 68.50 | 72.02 | 72.52 | 64.11 | 59.78 | 59.50 | 62.84 | |||||||||||||
1939 | 55.06 | 52.63 | a | 55.60 | 61.67 | 62.63 | 65.65 | 69.81 | 71.45 | 74.23 | 68.50 | a | 63.77 | 60.48 | 63.46 | |||||||||||
1940 | 58.34 | 58.34 | 60.87 | a | 62.67 | a | 65.61 | 65.37 | 69.68 | 70.15 | 68.88 | 67.35 | 61.15 | 59.47 | 63.99 | |||||||||||
1941 | 57.47 | 58.93 | 60.84 | 60.10 | 66.87 | 65.95 | 70.31 | 70.48 | 67.40 | 65.08 | 63.12 | 57.06 | 63.63 | |||||||||||||
1942 | 57.00 | h | ----- | z | 58.26 | 59.95 | 63.58 | 66.13 | 71.92 | 71.00 | 69.98 | a | 67.17 | a | ----- | z | 57.42 | a | 65.05 | c | ||||||
1943 | 56.08 | a | 59.73 | ----- | z | 60.55 | b | 65.04 | c | 66.25 | 69.90 | 71.50 | 70.70 | 65.71 | 62.27 | 57.74 | 64.13 | a | ||||||||
1944 | 56.03 | 53.69 | 59.31 | 58.88 | 62.69 | 64.20 | 67.13 | 70.81 | e | 68.47 | a | 64.96 | e | 58.87 | 58.68 | 61.98 | ||||||||||
1945 | 55.29 | 56.96 | b | 55.19 | 58.82 | 62.13 | a | 64.93 | 70.32 | 74.47 | 72.00 | j | 67.73 | 59.92 | 57.07 | a | 62.08 | a | ||||||||
1946 | 56.11 | 54.14 | 57.82 | 61.48 | a | 62.52 | a | 68.50 | 71.94 | 72.58 | 72.95 | a | 63.94 | 58.23 | 55.85 | 63.01 | ||||||||||
1947 | 53.85 | 58.82 | 60.47 | 62.98 | 64.55 | 67.17 | 72.69 | 72.15 | 72.20 | 66.05 | 58.30 | 57.23 | 63.87 | |||||||||||||
1948 | 56.68 | a | 55.28 | 55.73 | 61.78 | a | 62.78 | a | 65.85 | 69.10 | 69.42 | 69.23 | 65.48 | 61.08 | 54.23 | e | 62.22 | |||||||||
1949 | 48.52 | 53.05 | 56.06 | 61.50 | 63.81 | 69.02 | a | 70.02 | 71.19 | 70.30 | 63.98 | 65.45 | 55.03 | 62.33 | ||||||||||||
1950 | 50.60 | 55.45 | 57.74 | 60.98 | 61.18 | 64.63 | 70.77 | 69.55 | 67.47 | a | 67.19 | 63.24 | a | 60.23 | 62.42 | |||||||||||
1951 | 55.45 | 56.02 | 58.79 | 59.72 | 62.37 | 65.37 | 71.40 | 70.48 | 69.27 | 67.79 | 60.46 | c | 54.15 | 62.61 | ||||||||||||
1952 | 53.35 | 58.03 | 55.16 | 59.87 | 64.34 | 64.27 | 70.02 | 71.02 | 71.97 | 66.02 | g | 58.98 | 55.89 | 62.08 | a | |||||||||||
1953 | 59.42 | 57.66 | 57.82 | 57.70 | 62.27 | a | 65.07 | 72.11 | 69.31 | d | 67.73 | 66.18 | 61.95 | 57.02 | 62.85 | |||||||||||
1954 | 53.85 | 61.07 | a | 55.87 | 59.08 | 62.26 | b | 65.84 | a | 75.43 | b | 70.92 | 69.79 | a | 63.73 | 62.85 | 56.39 | 63.09 | ||||||||
1955 | 52.44 | 55.11 | 59.15 | 59.70 | b | 61.75 | i | 65.75 | 69.43 | c | 73.87 | a | 72.20 | 62.44 | 58.93 | a | 55.08 | a | 62.19 | a | ||||||
1956 | 55.38 | a | 52.71 | 58.50 | b | 58.41 | b | 63.68 | f | 67.52 | 70.85 | 70.74 | 73.43 | 64.53 | 65.65 | 58.92 | 63.33 | a | ||||||||
1957 | 53.27 | 58.50 | 57.66 | 58.50 | 61.26 | 68.88 | 70.68 | a | 70.60 | a | 68.02 | a | 62.16 | 56.65 | 57.19 | 61.95 | ||||||||||
1958 | 55.56 | 56.48 | 53.69 | 61.59 | b | 67.08 | 68.06 | c | 70.55 | 73.65 | 73.93 | a | 72.50 | 62.19 | a | 61.40 | a | 64.72 | ||||||||
1959 | 58.82 | 55.30 | 61.81 | 63.37 | 62.32 | 67.33 | 74.47 | 73.82 | 71.76 | a | 68.35 | 65.18 | 59.31 | 65.15 | ||||||||||||
1960 | 54.13 | 56.60 | 60.66 | 64.10 | 66.13 | 68.32 | 72.77 | 72.08 | 74.07 | a | 66.94 | 59.71 | a | 57.52 | 64.42 | |||||||||||
1961 | 61.29 | 60.50 | 59.81 | 61.95 | b | 61.48 | e | 66.25 | 71.31 | 72.92 | 69.22 | 66.93 | a | 60.10 | 55.68 | a | 63.95 | |||||||||
1962 | 57.31 | 55.74 | a | 55.47 | 62.52 | a | 62.03 | 64.30 | 69.32 | 72.23 | 69.90 | 65.68 | 61.10 | a | 57.74 | 62.78 | ||||||||||
1963 | 55.42 | 61.98 | 57.62 | a | 59.57 | 63.40 | 65.52 | 69.58 | a | 72.74 | 75.47 | 68.85 | 61.85 | 59.29 | 64.27 | |||||||||||
1964 | 57.02 | 58.55 | 58.24 | 60.20 | c | 60.50 | e | 64.27 | 70.58 | 71.82 | 69.93 | 69.79 | 60.17 | 56.65 | 63.14 | |||||||||||
1965 | 58.37 | 58.00 | 59.03 | 61.62 | 63.26 | 63.55 | 68.31 | 72.95 | b | 68.97 | 71.44 | 61.63 | 57.37 | a | 63.71 | |||||||||||
1966 | 56.10 | 56.66 | 60.27 | a | 63.37 | 64.26 | 68.45 | 72.27 | 74.52 | 71.35 | 68.92 | 62.18 | 58.27 | 64.72 | ||||||||||||
1967 | 57.30 | a | 60.11 | 59.52 | a | 56.22 | 64.74 | 65.38 | 71.89 | 76.71 | 73.17 | 71.02 | c | 65.52 | b | 55.77 | a | 64.78 | ||||||||
1968 | 58.06 | 61.34 | a | 62.45 | 63.38 | ----- | z | ----- | z | ----- | z | ----- | z | 71.61 | l | 68.60 | 63.59 | a | 56.25 | a | 61.95 | e | ||||
1969 | 59.34 | b | 56.02 | 60.33 | k | 61.71 | a | 63.77 | 66.38 | 72.63 | a | 76.35 | 71.93 | ----- | z | 65.90 | a | ----- | z | 66.01 | c | |||||
1970 | ----- | z | ----- | z | 61.08 | s | 60.63 | 66.02 | a | 68.09 | b | 71.89 | 72.93 | a | 70.45 | 65.21 | 59.65 | 54.52 | 65.49 | c | ||||||
1971 | 55.03 | 56.45 | 58.92 | 61.43 | a | 62.78 | d | 67.55 | b | 73.07 | a | 77.42 | 73.72 | 66.18 | 58.38 | d | 52.15 | 63.59 | ||||||||
1972 | 54.53 | a | 57.50 | 61.03 | 63.02 | a | 65.80 | a | 70.17 | 74.02 | 75.53 | a | 71.67 | c | 65.98 | c | 58.98 | 55.33 | a | 64.46 | ||||||
1973 | 53.95 | a | 58.92 | b | 56.90 | e | 63.00 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.59 | i |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 54.69 | 53.65 | b | 59.24 | b | 59.71 | a | 66.40 | 70.76 | g | 69.97 | a | 71.46 | c | 69.75 | f | 65.26 | n | 62.61 | l | 56.05 | b | 61.40 | d | ||
2002 | 56.40 | 59.18 | 59.00 | 60.85 | 63.08 | e | 66.95 | 70.05 | 70.82 | 71.10 | f | 65.69 | o | 62.93 | w | 56.97 | 62.59 | c | ||||||||
2003 | 62.50 | d | 58.63 | i | 62.62 | k | 61.50 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.50 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 55.08 | 56.55 | 58.06 | 60.41 | 63.40 | 66.22 | 70.75 | 71.55 | 69.92 | 65.78 | 60.89 | 56.56 | 62.89 | |||||||||||||
S.D. | 2.98 | 2.48 | 2.29 | 2.05 | 1.92 | 1.74 | 1.92 | 2.55 | 2.61 | 2.63 | 2.46 | 2.25 | 1.33 | |||||||||||||
SKEW | -0.19 | 0.09 | -0.06 | -0.32 | -0.13 | 0.18 | 0.52 | -0.62 | -0.06 | 0.32 | 0.18 | -0.12 | -0.46 | |||||||||||||
MAX | 62.50 | 61.98 | 62.45 | 64.10 | 67.08 | 70.17 | 75.97 | 77.42 | 75.47 | 72.50 | 65.90 | 61.40 | 65.15 | |||||||||||||
MIN | 46.98 | 52.02 | 53.60 | 55.22 | 58.58 | 62.52 | 66.87 | 61.90 | 63.02 | 59.73 | 55.02 | 52.15 | 59.68 | |||||||||||||
YRS | 54 | 53 | 52 | 54 | 50 | 52 | 53 | 53 | 50 | 49 | 51 | 53 | 41 |