YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | 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 | 59.07 | 67.58 | 63.03 | 59.93 | 47.71 | 29.00 | 26.84 | 50.45 | e | |||||||
1941 | 24.32 | 26.82 | 29.71 | 42.43 | 53.71 | 58.47 | 64.03 | 62.94 | 57.10 | 46.06 | 31.17 | 26.30 | a | 43.59 | ||||||||||||
1942 | 18.32 | 19.61 | 29.03 | 44.27 | 47.74 | 61.47 | 64.68 | 63.60 | a | 53.73 | 43.90 | b | 31.27 | 24.35 | 41.83 | |||||||||||
1943 | 21.26 | 26.11 | 24.71 | 44.10 | ----- | z | 60.53 | 64.77 | 67.23 | 53.93 | 40.19 | 27.80 | 16.84 | 40.68 | a | |||||||||||
1944 | 18.32 | 26.97 | 27.10 | 37.27 | 51.00 | 61.70 | 63.45 | 64.39 | 54.40 | 43.84 | 33.93 | 23.81 | 42.18 | |||||||||||||
1945 | 23.55 | 26.77 | b | 32.84 | 36.10 | 47.45 | 55.10 | a | 64.87 | a | 64.74 | 54.23 | 43.45 | 30.20 | 18.61 | 41.49 | ||||||||||
1946 | 21.17 | a | 26.11 | 35.13 | 46.80 | 48.03 | 61.93 | 67.87 | 65.29 | 57.87 | 45.42 | 30.73 | 26.65 | 44.42 | ||||||||||||
1947 | 20.55 | 21.64 | 28.61 | 39.93 | 49.45 | 57.23 | 64.13 | 66.19 | 57.97 | 50.19 | 27.00 | a | 24.16 | 42.26 | ||||||||||||
1948 | 18.19 | 22.57 | a | 24.26 | 45.10 | 51.13 | 61.07 | 65.00 | 62.97 | 56.37 | 42.23 | 28.80 | 25.33 | a | 41.92 | |||||||||||
1949 | 14.10 | a | 24.43 | 30.55 | 41.03 | 51.84 | 60.13 | 65.23 | 63.29 | 54.43 | 43.16 | 34.87 | 21.71 | 42.06 | ||||||||||||
1950 | 16.52 | b | 26.14 | 27.32 | 39.47 | 49.52 | 61.17 | 62.13 | 59.97 | 56.07 | 47.42 | 27.03 | 22.32 | 41.26 | ||||||||||||
1951 | 20.16 | 24.68 | 26.45 | 38.13 | 51.32 | 57.20 | 67.94 | 65.87 | 52.47 | 40.94 | 25.70 | 18.81 | 40.81 | |||||||||||||
1952 | 24.84 | 25.72 | 27.23 | 39.30 | 49.23 | 67.17 | 64.45 | 66.23 | 54.67 | 38.29 | 27.40 | 21.26 | 42.15 | |||||||||||||
1953 | 28.16 | 24.25 | 34.94 | 37.93 | 49.06 | 66.07 | 65.87 | 64.13 | 56.33 | 46.58 | 32.57 | 22.84 | 44.06 | |||||||||||||
1954 | 21.29 | 31.46 | 28.19 | 44.37 | 49.07 | a | 60.87 | 68.29 | 65.19 | 60.17 | 44.45 | 33.03 | 25.23 | 44.30 | ||||||||||||
1955 | 20.74 | 18.71 | 27.39 | 42.50 | 52.68 | 57.97 | 68.13 | 65.74 | 58.63 | 43.90 | a | 25.73 | 22.35 | 42.04 | ||||||||||||
1956 | 20.68 | 21.52 | 29.55 | 37.57 | 55.29 | 64.00 | 64.97 | 63.84 | 57.23 | 46.19 | 27.53 | 24.26 | 42.72 | |||||||||||||
1957 | 18.81 | 29.43 | 32.29 | 39.37 | 49.65 | 57.80 | 67.65 | 65.45 | 51.80 | 46.13 | 30.77 | 25.84 | 42.91 | |||||||||||||
1958 | 23.58 | 25.75 | 26.48 | 39.63 | 54.61 | 61.70 | 64.58 | 64.03 | 58.30 | 43.35 | 30.37 | 22.48 | 42.91 | |||||||||||||
1959 | 17.19 | 24.68 | 28.10 | 38.27 | 52.35 | 62.13 | 63.13 | 65.84 | 53.40 | 40.35 | 24.53 | 27.13 | 41.43 | |||||||||||||
1960 | 19.65 | 19.62 | 27.10 | 42.90 | 47.74 | 60.50 | 63.39 | 64.29 | 56.60 | 44.77 | 30.60 | 24.84 | 41.83 | |||||||||||||
1961 | 19.00 | 26.57 | 31.61 | 37.63 | 49.81 | 60.00 | 63.74 | 63.81 | 52.50 | 41.42 | 29.83 | 21.55 | 41.46 | |||||||||||||
1962 | 15.45 | 25.96 | 27.42 | 41.87 | 54.42 | 58.77 | 64.48 | 63.45 | 55.03 | 43.52 | 32.60 | 26.32 | 42.44 | |||||||||||||
1963 | 9.42 | 26.50 | 33.94 | 43.93 | 54.97 | 61.67 | 66.77 | 65.42 | 59.77 | 50.58 | 32.37 | 18.87 | 43.68 | |||||||||||||
1964 | 21.45 | 21.76 | 25.68 | 41.80 | 54.10 | 60.20 | 67.94 | 64.45 | 56.80 | 41.77 | 33.23 | 23.03 | 42.68 | |||||||||||||
1965 | 25.32 | 21.61 | 23.13 | 43.60 | 52.35 | 60.60 | 65.71 | 62.97 | 53.83 | 44.52 | 37.03 | ----- | z | 44.61 | a | |||||||||||
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 24.85 | k | 30.56 | k | 33.50 | k | 39.59 | h | 49.67 | j | 60.31 | n | 66.29 | j | 69.40 | u | 55.09 | s | 46.50 | u | 25.00 | x | ----- | z | ----- | z |
2001 | 22.05 | i | 25.95 | i | 31.68 | l | 45.00 | v | ----- | z | 61.00 | s | ----- | z | 66.00 | f | 53.79 | k | 41.05 | i | 39.52 | i | 22.44 | d | 22.44 | k |
2002 | 18.67 | g | 21.00 | g | 21.26 | l | 42.89 | k | 48.71 | j | 65.13 | g | 66.68 | f | 63.67 | j | 56.12 | f | 38.50 | g | 29.05 | j | 20.82 | t | ----- | z |
2003 | 22.95 | j | 21.32 | i | 32.50 | m | 36.11 | u | 48.60 | p | 57.29 | b | 65.04 | g | 64.55 | i | 51.90 | j | 41.70 | k | 29.96 | g | 27.00 | s | 57.29 | k |
2004 | 16.15 | r | 18.06 | k | 32.90 | k | 37.89 | l | 53.00 | v | 59.20 | j | 63.26 | h | 59.88 | e | 57.41 | m | 44.67 | v | 31.75 | r | 27.00 | t | 59.88 | k |
2005 | 25.60 | u | 29.00 | h | 27.57 | h | 38.64 | p | 47.67 | p | 59.42 | r | 63.67 | p | 60.29 | q | 57.44 | u | 37.57 | q | 32.75 | r | 18.38 | b | 18.38 | k |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.19 | d | 67.26 | d | 64.00 | d | 49.15 | c | 40.52 | 25.93 | a | 22.11 | c | 47.31 | e | |
2007 | 15.97 | a | 18.43 | 34.65 | 35.23 | 48.97 | 56.57 | 62.52 | 65.93 | a | 54.37 | 40.19 | 24.29 | b | 17.71 | 39.57 | ||||||||||
2008 | 17.03 | 18.21 | a | 28.39 | 32.90 | 46.74 | 57.93 | 64.81 | 62.71 | 52.45 | a | 40.00 | 30.13 | 17.29 | 39.05 | |||||||||||
2009 | 19.27 | e | ----- | z | 27.14 | c | 37.61 | b | 48.93 | b | 58.77 | 66.33 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.34 | g | |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.80 | 24.15 | 28.89 | 40.39 | 50.78 | 60.23 | 65.36 | 64.23 | 55.50 | 43.83 | 29.84 | 22.66 | 42.20 | |||||||||||||
S.D. | 3.82 | 3.41 | 3.26 | 3.36 | 2.55 | 2.64 | 1.82 | 1.67 | 2.67 | 3.04 | 3.19 | 3.07 | 1.29 | |||||||||||||
SKEW | -0.29 | -0.15 | 0.49 | -0.12 | 0.31 | 0.56 | 0.22 | -0.81 | -0.11 | 0.36 | 0.11 | -0.38 | -0.41 | |||||||||||||
MAX | 28.16 | 31.46 | 35.13 | 46.80 | 55.29 | 67.17 | 68.29 | 67.23 | 60.17 | 50.58 | 37.03 | 27.13 | 44.42 | |||||||||||||
MIN | 9.42 | 18.21 | 23.13 | 32.90 | 46.74 | 55.10 | 62.13 | 59.88 | 49.15 | 38.29 | 24.29 | 16.84 | 39.05 | |||||||||||||
YRS | 28 | 27 | 28 | 28 | 27 | 31 | 29 | 30 | 29 | 29 | 29 | 30 | 25 |