YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 22.24 | j | ----- | z |
1916 | 10.68 | 25.17 | 28.10 | 30.37 | 31.03 | 36.27 | 43.55 | 47.77 | a | 37.11 | c | 30.48 | 24.33 | 22.74 | 30.63 | |||||||||||
1917 | 22.55 | 24.50 | 25.00 | 31.27 | 34.74 | 36.00 | 42.87 | a | 44.16 | 40.37 | 32.68 | 34.03 | a | 21.55 | 32.48 | |||||||||||
1918 | 26.37 | a | 18.57 | 26.26 | 26.30 | 33.85 | e | ----- | z | 51.93 | a | 53.81 | 49.59 | a | 36.77 | 25.60 | 23.13 | 33.83 | a | |||||||
1919 | 22.13 | 20.61 | 25.07 | a | 28.27 | 30.19 | 39.83 | x | 43.68 | 43.00 | ----- | z | 31.23 | 30.07 | o | ----- | z | 30.52 | d | |||||||
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.63 | 43.61 | 42.55 | 38.63 | 32.90 | a | 26.27 | 23.61 | 35.03 | e | ||||||
1921 | 20.29 | 22.89 | 24.37 | a | 25.77 | 31.52 | b | 36.88 | e | 40.23 | 40.32 | 35.23 | d | 33.35 | e | 26.33 | 21.06 | 29.85 | ||||||||
1922 | 15.07 | b | 18.73 | b | 23.42 | 28.50 | 31.23 | a | 39.20 | 43.39 | 43.87 | 39.10 | 34.61 | 27.47 | 18.58 | 30.26 | ||||||||||
1923 | 22.87 | h | 18.29 | 24.80 | a | 29.62 | a | 33.23 | 38.30 | 44.68 | 44.30 | a | 37.53 | 32.67 | a | 31.13 | 23.32 | 32.53 | a | |||||||
1924 | 15.16 | 23.34 | 24.65 | 27.60 | 35.40 | a | 39.97 | 44.26 | 43.35 | 36.63 | 34.93 | a | 26.48 | e | 14.68 | 30.54 | ||||||||||
1925 | 25.13 | 26.93 | a | 25.81 | 31.47 | 34.67 | a | 40.10 | 45.53 | a | 43.58 | 42.37 | 32.97 | a | 28.37 | 28.61 | 33.79 | |||||||||
1926 | 24.32 | 28.96 | 27.87 | 32.80 | 36.13 | 42.03 | 44.71 | 45.29 | 36.57 | 36.26 | 30.13 | 22.29 | 33.95 | |||||||||||||
1927 | 20.35 | 23.32 | 24.61 | 26.93 | a | 31.87 | 38.07 | 45.58 | 45.00 | 41.43 | 35.63 | a | 29.52 | a | 17.90 | b | 31.68 | |||||||||
1928 | 21.74 | 22.55 | 27.65 | 29.07 | 34.65 | 41.60 | 46.81 | 42.90 | 39.14 | a | 34.74 | 29.93 | a | ----- | z | 33.71 | a | |||||||||
1929 | ----- | z | ----- | z | ----- | z | 27.57 | 33.35 | 39.52 | a | 43.06 | 44.06 | 39.40 | 33.23 | 26.83 | 26.56 | o | 35.88 | d | |||||||
1930 | ----- | z | ----- | z | ----- | z | 31.07 | 34.26 | 39.10 | 44.90 | 45.97 | 42.53 | 31.58 | 26.80 | 23.06 | 35.47 | c | |||||||||
1931 | 24.87 | 22.04 | 26.40 | a | 29.43 | 34.71 | 41.43 | 43.81 | 43.06 | 41.63 | 32.87 | 23.73 | 20.37 | a | 32.03 | |||||||||||
1932 | 18.71 | 19.00 | 26.81 | 30.67 | 32.35 | 38.33 | 42.23 | 45.63 | a | 37.90 | 35.87 | 29.73 | 17.52 | 31.23 | ||||||||||||
1933 | 23.87 | 15.75 | 26.00 | 28.60 | 32.84 | 36.37 | 41.77 | 45.84 | 38.30 | 34.74 | 31.23 | 27.71 | 31.92 | |||||||||||||
1934 | 26.84 | 26.64 | 29.39 | 35.00 | 35.07 | p | 41.04 | e | 43.00 | j | 46.46 | e | 38.18 | h | 36.21 | l | 31.93 | 26.13 | 32.93 | d | ||||||
1935 | 21.10 | a | 23.26 | e | 24.73 | e | 25.52 | c | 32.32 | 41.40 | 44.68 | f | ----- | z | 41.69 | a | 34.58 | g | 25.04 | g | 24.04 | f | 30.00 | e | ||
1936 | 23.88 | e | 7.92 | c | 23.65 | h | 30.69 | a | 35.52 | b | 42.16 | e | 46.72 | b | 46.83 | b | 39.24 | i | 35.30 | h | ----- | z | 27.18 | c | 32.61 | d |
1937 | 5.00 | f | 17.81 | g | 28.62 | b | 30.10 | a | 33.06 | 40.38 | a | 48.00 | d | 45.29 | c | 43.17 | a | 37.23 | 31.27 | 26.10 | 36.32 | b | ||||
1938 | 23.45 | 23.56 | a | 26.19 | 30.47 | 34.16 | 42.31 | a | 47.06 | 43.23 | 44.67 | 35.74 | 24.66 | a | 24.84 | 33.36 | ||||||||||
1939 | 27.00 | 20.29 | 26.03 | 30.93 | 34.94 | 39.33 | 45.55 | 46.55 | 41.33 | 36.10 | 30.28 | a | 28.03 | 33.86 | ||||||||||||
1940 | 22.35 | 26.69 | 29.65 | 31.87 | 36.94 | 42.10 | 46.42 | 46.13 | 45.00 | 38.29 | 24.63 | 25.58 | 34.64 | |||||||||||||
1941 | 25.45 | 24.79 | 27.90 | a | 33.97 | 37.19 | 42.57 | 49.58 | 47.61 | 40.80 | 37.90 | 32.03 | 26.87 | a | 35.56 | |||||||||||
1942 | 19.29 | 24.88 | b | 28.94 | 33.37 | 36.77 | 41.83 | 50.65 | 50.17 | a | 43.57 | 37.03 | 27.97 | 26.32 | 35.07 | |||||||||||
1943 | 13.19 | 26.25 | 25.71 | 32.77 | 34.19 | 39.04 | b | 48.03 | 47.94 | 43.03 | 37.04 | c | 30.13 | 22.81 | 33.34 | |||||||||||
1944 | 20.68 | 22.83 | 24.35 | 30.77 | 34.23 | 41.43 | 46.74 | 45.10 | 43.77 | 39.84 | 28.57 | 20.00 | 33.19 | |||||||||||||
1945 | 24.61 | 27.76 | c | 25.32 | ----- | z | ----- | z | 38.56 | e | 47.00 | m | ----- | z | 38.60 | o | 35.42 | l | 26.22 | l | ----- | z | 29.06 | h | ||
1946 | 22.74 | h | 20.67 | d | 26.07 | d | 28.62 | d | 33.46 | e | 34.42 | d | 44.37 | d | 42.93 | q | 39.48 | e | 29.19 | e | 23.83 | f | 23.17 | g | 32.04 | d |
1947 | ----- | z | 25.47 | i | 28.26 | d | 31.12 | e | 38.32 | f | 39.52 | e | 44.24 | f | 42.71 | j | 41.44 | e | 34.24 | f | 28.52 | e | 26.39 | c | 32.54 | f |
1948 | 17.96 | e | 18.23 | g | 22.73 | i | 26.46 | f | 33.39 | h | 40.96 | f | 43.84 | f | 46.38 | g | 37.40 | e | 31.67 | g | 27.36 | e | 17.72 | f | 27.57 | i |
1949 | 4.91 | h | 18.25 | h | 26.75 | k | 29.67 | l | 34.50 | g | 36.71 | p | 41.60 | p | 44.14 | i | 42.81 | i | 32.04 | h | 32.64 | h | 23.18 | i | ----- | z |
1950 | 0.12 | n | 20.00 | g | 24.05 | j | 28.56 | l | 31.95 | i | 37.25 | j | 44.83 | s | 44.63 | l | 42.77 | h | 31.75 | g | ----- | z | 17.71 | j | ----- | z |
1951 | 17.78 | d | 22.67 | j | 21.21 | l | 29.06 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 17.78 | k |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.33 | j | 26.07 | 25.55 | 25.81 | j | ||
1953 | 29.90 | 25.61 | 26.13 | 30.46 | b | 33.74 | 38.23 | 43.83 | h | 46.95 | j | 40.82 | m | 37.92 | f | 31.23 | 28.58 | 30.49 | d | |||||||
1954 | 17.10 | 23.79 | 19.06 | 25.47 | o | 32.85 | k | 35.97 | 42.17 | a | 45.42 | 43.07 | a | 33.42 | 32.79 | k | 24.10 | 31.56 | c | |||||||
1955 | 21.42 | 20.86 | 20.97 | a | 26.79 | a | 32.00 | 38.07 | 43.77 | 44.23 | 41.40 | 34.74 | 22.25 | b | 18.45 | 30.41 | ||||||||||
1956 | 21.16 | 17.59 | 24.03 | 30.21 | b | 35.55 | 37.07 | 45.39 | 45.97 | 41.03 | 34.32 | 26.50 | 24.68 | 31.96 | ||||||||||||
1957 | 11.23 | 22.29 | 27.35 | 31.23 | 38.32 | 41.90 | 43.81 | 45.17 | h | 44.23 | 33.94 | 27.07 | a | 28.10 | a | 31.77 | a | |||||||||
1958 | 26.55 | 30.04 | a | 25.06 | 30.73 | 37.87 | 46.03 | 50.19 | 47.90 | 40.90 | 35.74 | 25.43 | 27.68 | 35.34 | ||||||||||||
1959 | 21.87 | 24.57 | 27.23 | 30.14 | a | 33.16 | 41.47 | 46.42 | 43.65 | 40.77 | 35.81 | 25.17 | 24.77 | 32.92 | ||||||||||||
1960 | 20.61 | 22.90 | 25.48 | 31.43 | 33.68 | 40.13 | 47.29 | 45.23 | 40.60 | 36.81 | 28.83 | 22.03 | 32.92 | |||||||||||||
1961 | 23.77 | a | 28.64 | 28.00 | 29.80 | 34.10 | 42.87 | 47.68 | 50.16 | 39.23 | 33.68 | 23.20 | 22.29 | 33.62 | ||||||||||||
1962 | 20.58 | 24.93 | 24.16 | 30.97 | a | 33.87 | 38.20 | 44.65 | 46.06 | 42.97 | 37.10 | 31.10 | 26.45 | 33.42 | ||||||||||||
1963 | 17.06 | 28.75 | 27.45 | 30.37 | 35.52 | 42.10 | 45.23 | 47.65 | 45.93 | 38.10 | 29.33 | 21.20 | a | 34.06 | ||||||||||||
1964 | 23.39 | 23.93 | 24.90 | 27.41 | a | 31.65 | 36.83 | 43.42 | 42.90 | 38.83 | 35.94 | 26.57 | 17.90 | a | 31.14 | |||||||||||
1965 | 25.76 | b | 24.19 | a | 22.97 | 30.53 | 33.68 | 39.67 | 47.71 | 48.00 | 39.43 | 37.58 | 33.07 | 23.42 | 33.83 | |||||||||||
1966 | 22.71 | 25.04 | 26.00 | a | 31.34 | a | 33.81 | 39.63 | 44.81 | 45.61 | 44.37 | 34.90 | a | 30.57 | 28.97 | 33.98 | ||||||||||
1967 | 27.26 | 28.00 | 24.13 | 28.73 | 34.50 | a | 42.93 | 46.97 | 49.77 | 44.40 | 37.13 | 30.07 | 23.10 | 34.75 | ||||||||||||
1968 | 23.07 | a | 25.61 | a | 29.90 | 28.87 | 35.77 | 42.17 | 48.39 | 46.19 | 42.83 | a | ----- | z | 29.24 | a | 17.00 | 33.55 | a | |||||||
1969 | 11.84 | 21.54 | 26.35 | 30.54 | d | 36.38 | b | 46.03 | 45.42 | 43.84 | 41.17 | 32.16 | 30.00 | a | 26.06 | 32.61 | ||||||||||
1970 | 21.52 | b | 28.18 | 26.87 | 28.50 | 33.76 | b | 42.83 | a | 45.79 | b | 46.73 | a | 40.34 | a | 33.71 | 27.86 | b | 21.16 | 33.10 | ||||||
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.84 | e | 20.97 | b | 24.90 | j |
1972 | 16.52 | d | 19.27 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 16.52 | k |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | 21.26 | 23.39 | 25.96 | 29.97 | 34.14 | 39.98 | 45.53 | 45.66 | 41.09 | 34.91 | 28.25 | 23.45 | 32.86 | |||||||||||||
S.D. | 4.45 | 4.06 | 2.12 | 2.05 | 1.82 | 2.53 | 2.44 | 2.46 | 2.82 | 2.29 | 2.71 | 3.55 | 1.56 | |||||||||||||
SKEW | -0.63 | -1.25 | -0.65 | -0.09 | 0.15 | 0.12 | 0.45 | 0.84 | 0.35 | -0.26 | -0.13 | -0.42 | -0.26 | |||||||||||||
MAX | 29.90 | 30.04 | 29.90 | 35.00 | 38.32 | 46.03 | 51.93 | 53.81 | 49.59 | 39.84 | 34.03 | 28.97 | 35.56 | |||||||||||||
MIN | 10.68 | 7.92 | 19.06 | 25.52 | 30.19 | 34.42 | 40.23 | 40.32 | 35.23 | 29.19 | 22.25 | 14.68 | 29.85 | |||||||||||||
YRS | 46 | 45 | 46 | 47 | 45 | 48 | 45 | 44 | 46 | 43 | 47 | 46 | 32 |