YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1902 | ----- | z | ----- | z | ----- | z | ----- | z | 29.72 | b | 39.97 | 46.58 | 45.13 | 43.10 | a | ----- | z | ----- | z | ----- | z | 40.90 | g | |||
1903 | ----- | z | ----- | z | 20.45 | 23.57 | 32.39 | 46.50 | 48.35 | ----- | z | ----- | z | 27.33 | p | 20.41 | a | ----- | z | 31.95 | 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 | 55.26 | l | 50.07 | c | 33.80 | f | 23.03 | 15.71 | g | 36.55 | j | |
1917 | 14.60 | k | 24.21 | 23.72 | f | 31.57 | 39.32 | 49.00 | 61.29 | 56.19 | 50.97 | 46.80 | u | 28.12 | n | 24.48 | 42.13 | d | ||||||||
1918 | 19.67 | a | 27.25 | 33.19 | 36.53 | 39.65 | 56.48 | a | 57.26 | 56.10 | 51.40 | 41.13 | 27.20 | 22.19 | 39.00 | |||||||||||
1919 | 18.65 | 21.43 | 28.45 | 37.28 | a | 44.94 | 48.15 | c | 59.84 | 57.52 | 53.28 | a | 36.06 | 27.03 | 24.35 | 38.08 | ||||||||||
1920 | 26.61 | 30.10 | 27.37 | a | 29.10 | 41.03 | 48.97 | 56.61 | 56.04 | d | 46.37 | 36.52 | 27.57 | 19.00 | 37.11 | |||||||||||
1921 | 21.52 | 24.43 | 31.58 | 31.57 | 40.87 | 49.33 | 59.10 | 58.07 | a | 46.63 | 42.52 | 28.67 | 28.68 | 38.58 | ||||||||||||
1922 | 19.45 | 22.75 | 24.77 | 31.13 | 40.80 | a | 49.90 | 58.13 | 58.00 | 50.33 | 37.06 | 26.77 | 27.48 | 37.22 | ||||||||||||
1923 | 24.19 | 21.07 | 25.23 | 33.67 | 41.77 | 43.47 | 59.26 | 55.81 | 47.23 | 33.68 | 29.63 | 23.87 | 36.57 | |||||||||||||
1924 | 15.68 | 24.00 | 23.16 | 33.57 | 40.61 | 51.10 | 57.19 | 56.87 | 50.07 | 35.03 | 27.37 | 19.74 | 36.20 | |||||||||||||
1925 | 17.13 | 26.25 | 27.35 | 34.87 | 44.68 | 51.33 | 60.68 | 55.84 | 44.20 | 36.58 | 29.43 | 25.77 | 37.84 | |||||||||||||
1926 | 23.87 | 25.75 | 30.94 | 36.50 | 40.42 | 54.03 | 53.65 | 53.68 | 45.97 | 37.87 | 31.70 | 20.42 | 37.90 | |||||||||||||
1927 | 26.26 | 29.89 | 31.16 | 34.17 | 34.88 | o | 49.03 | 58.77 | 58.90 | 48.70 | 36.42 | 30.50 | 21.16 | 38.63 | a | |||||||||||
1928 | 23.77 | 25.34 | 29.13 | 32.33 | 42.42 | 46.93 | 53.42 | 54.42 | 47.53 | 39.39 | 29.13 | 21.06 | 37.07 | |||||||||||||
1929 | 19.52 | 19.50 | 25.23 | 31.37 | 36.61 | ----- | z | ----- | z | ----- | z | ----- | z | 38.00 | e | 25.13 | 22.52 | b | 27.23 | d | ||||||
1930 | 22.32 | 26.82 | 28.03 | 37.87 | 36.32 | 48.90 | 57.77 | 55.58 | 46.73 | 35.52 | 26.33 | 18.71 | 36.74 | |||||||||||||
1931 | 21.13 | 29.07 | 26.61 | 36.20 | 42.85 | d | 48.90 | 60.16 | 58.58 | 50.17 | 38.23 | 28.10 | 17.68 | 38.14 | ||||||||||||
1932 | 17.10 | 26.28 | 27.03 | 31.67 | 40.13 | 47.07 | 58.45 | 55.94 | 48.07 | 37.10 | 27.93 | 15.13 | 35.99 | |||||||||||||
1933 | 15.35 | 13.14 | 27.48 | 30.13 | 36.06 | 47.30 | 60.03 | 56.00 | 51.53 | 41.39 | 27.77 | 24.77 | 35.91 | |||||||||||||
1934 | 22.65 | 26.21 | 32.42 | 35.63 | 41.77 | 44.83 | 58.45 | 58.32 | 47.10 | 38.55 | 29.80 | 26.03 | 38.48 | |||||||||||||
1935 | 24.39 | 27.96 | 26.77 | 33.73 | 36.87 | 46.70 | 54.97 | 57.39 | 48.43 | 36.16 | 25.40 | 23.06 | 36.82 | |||||||||||||
1936 | 19.81 | 25.41 | 26.32 | 33.43 | 38.45 | 50.63 | 56.71 | 55.87 | 45.33 | 37.00 | 26.60 | 23.65 | 36.60 | |||||||||||||
1937 | 5.65 | 23.39 | 26.94 | 30.23 | 39.87 | 48.43 | 57.61 | 51.87 | 51.07 | 39.00 | 27.30 | 28.45 | 35.82 | |||||||||||||
1938 | 24.71 | 26.18 | 27.84 | 31.23 | 38.48 | 47.13 | 53.87 | 54.74 | 50.17 | 35.48 | 19.17 | 24.58 | 36.13 | |||||||||||||
1939 | 22.45 | 14.04 | 28.06 | 34.00 | 38.55 | 46.10 | 54.77 | 55.90 | 51.30 | 34.03 | 29.17 | 24.94 | 36.11 | |||||||||||||
1940 | 25.29 | 25.21 | 27.16 | 33.97 | 41.00 | 50.60 | 53.87 | 55.26 | 50.77 | 38.65 | 24.90 | 26.87 | a | 37.79 | ||||||||||||
1941 | 23.90 | 29.39 | 29.29 | 31.73 | 40.87 | 44.67 | 54.71 | 52.68 | 44.63 | 35.65 | 27.57 | 22.94 | 36.50 | |||||||||||||
1942 | 20.52 | 19.68 | 25.97 | 33.77 | 37.71 | 46.30 | 56.94 | 56.23 | 45.87 | 37.58 | 28.77 | 24.32 | 36.14 | |||||||||||||
1943 | 23.71 | 25.39 | 31.84 | 36.13 | 46.36 | t | 47.87 | 55.19 | 57.32 | 49.50 | 38.45 | 26.37 | 25.32 | 37.92 | a | |||||||||||
1944 | 23.54 | g | 24.69 | 25.00 | 31.37 | 39.29 | 44.30 | 53.61 | 55.16 | 49.13 | 39.48 | 28.63 | 24.65 | 37.76 | a | |||||||||||
1945 | 23.16 | 27.14 | 26.45 | 29.67 | 39.26 | 45.30 | 58.03 | 58.58 | 49.00 | 41.68 | 25.30 | 19.19 | 36.90 | |||||||||||||
1946 | 21.74 | 20.54 | 27.84 | 37.70 | 41.10 | 47.50 | 57.29 | 57.39 | 49.57 | 34.42 | 27.90 | 27.10 | 37.51 | |||||||||||||
1947 | 19.32 | 25.07 | 28.29 | 33.50 | 43.77 | 49.10 | 57.06 | 55.55 | 52.00 | 39.19 | 25.13 | 21.26 | 37.44 | |||||||||||||
1948 | 20.65 | 23.07 | 23.06 | 33.23 | 38.42 | 45.23 | 53.84 | 56.68 | 48.57 | 38.35 | 24.60 | 20.65 | 35.53 | |||||||||||||
1949 | 15.19 | 15.96 | 25.26 | 35.13 | 39.71 | 49.20 | 58.23 | 52.87 | 51.67 | 36.71 | 30.90 | 19.07 | a | 35.82 | ||||||||||||
1950 | 20.74 | 27.29 | 27.84 | 34.60 | 37.90 | 45.67 | 58.45 | 52.74 | 45.47 | 40.74 | 28.80 | 23.50 | a | 36.98 | ||||||||||||
1951 | 20.52 | 23.89 | 25.10 | 34.80 | 41.68 | 44.17 | 57.13 | 53.58 | 48.07 | 37.55 | 27.50 | 21.35 | 36.28 | |||||||||||||
1952 | 22.19 | 21.38 | 24.16 | 34.83 | 41.06 | 45.87 | 53.94 | 57.19 | 49.93 | 38.68 | 25.70 | 22.94 | 36.49 | |||||||||||||
1953 | 24.77 | 20.46 | 27.13 | 31.40 | 36.52 | 46.70 | 58.13 | 54.10 | 45.93 | 35.94 | 28.50 | 16.84 | 35.53 | |||||||||||||
1954 | 21.16 | 25.07 | 25.74 | 35.53 | 42.16 | 48.10 | 56.19 | 53.32 | 49.03 | 39.16 | 30.43 | 22.06 | 37.33 | |||||||||||||
1955 | 18.45 | 19.79 | 25.61 | 30.60 | 38.83 | b | 48.30 | 53.19 | 57.87 | 46.47 | 39.74 | 29.14 | a | 25.61 | 36.13 | |||||||||||
1956 | 26.65 | 18.76 | 25.19 | 33.50 | 42.39 | 50.53 | 55.13 | 50.37 | a | 49.53 | 35.61 | 20.60 | 20.10 | 35.70 | ||||||||||||
1957 | 24.77 | 29.25 | 29.48 | 30.70 | 35.55 | 49.50 | 52.29 | 55.07 | a | 46.13 | 36.84 | 25.53 | 22.81 | 36.49 | ||||||||||||
1958 | 19.77 | 27.46 | d | 27.03 | 33.03 | 44.39 | 51.40 | 56.65 | 55.71 | 46.70 | 37.84 | 28.33 | 24.68 | 37.75 | ||||||||||||
1959 | 19.00 | a | 20.25 | 28.06 | 39.67 | 40.90 | 48.73 | 52.06 | 53.13 | 43.33 | 30.48 | j | 24.87 | 22.81 | 35.71 | a | ||||||||||
1960 | 11.23 | 20.31 | 30.55 | 33.50 | 39.87 | 52.00 | 54.58 | 56.35 | 50.93 | 39.55 | 29.40 | ----- | z | 38.02 | a | |||||||||||
1961 | 22.92 | e | 25.46 | 26.10 | 33.28 | e | 39.00 | 52.60 | 58.42 | 56.74 | 45.90 | 34.61 | 26.70 | 18.87 | 36.72 | |||||||||||
1962 | 19.16 | 26.11 | 24.10 | 36.30 | 38.35 | 45.83 | 54.42 | 55.16 | 49.00 | 38.39 | 28.17 | 23.19 | 36.52 | |||||||||||||
1963 | 17.71 | 27.89 | 23.84 | 30.87 | 40.42 | 44.07 | 56.61 | 56.97 | 51.43 | 40.97 | 30.37 | 18.58 | 36.64 | |||||||||||||
1964 | 15.90 | 14.62 | 21.83 | a | 30.90 | 36.81 | 45.00 | 55.74 | 53.52 | 46.80 | 38.39 | 22.10 | 20.13 | 33.48 | ||||||||||||
1965 | 21.03 | 19.39 | 22.42 | 30.90 | 35.23 | 40.47 | 52.97 | 50.26 | 43.07 | 38.45 | 34.67 | 26.94 | 34.65 | |||||||||||||
1966 | 21.19 | 20.82 | 30.00 | 34.90 | 44.48 | 50.60 | 57.65 | 56.00 | 49.57 | 36.43 | a | 25.93 | c | 22.71 | 37.52 | |||||||||||
1967 | 20.26 | 19.86 | 28.24 | b | 29.14 | a | 37.00 | h | 45.96 | d | 59.82 | c | 57.29 | 53.45 | h | 38.55 | 31.83 | a | 17.26 | 34.82 | b | |||||
1968 | 21.13 | 29.24 | 27.84 | 33.73 | 41.65 | 50.60 | ----- | z | 51.84 | 46.37 | 39.94 | 28.70 | 17.90 | 35.36 | a | |||||||||||
1969 | 29.17 | a | 24.86 | 24.23 | 30.00 | 40.39 | 49.07 | 58.45 | 58.42 | 50.47 | 35.74 | 29.20 | 25.39 | 37.95 | ||||||||||||
1970 | 20.71 | 28.21 | 27.35 | 29.50 | 41.68 | 49.63 | 60.45 | 59.42 | 45.60 | 37.32 | 28.47 | 21.90 | 37.52 | |||||||||||||
1971 | 19.94 | 22.79 | 24.03 | a | 30.63 | 37.77 | a | 48.45 | a | 58.17 | a | 58.31 | o | 48.67 | 35.77 | 26.30 | 15.30 | a | 33.44 | a | ||||||
1972 | 19.45 | 23.79 | 31.03 | a | 31.60 | 40.84 | 49.87 | 57.15 | d | 53.81 | o | 49.50 | 41.80 | a | 27.14 | a | 21.17 | b | 35.76 | a | ||||||
1973 | 19.00 | 26.44 | a | 26.87 | 31.00 | e | 40.84 | 49.57 | b | 56.96 | d | 54.42 | l | 47.07 | 36.87 | 30.28 | a | 22.39 | 35.21 | a | ||||||
1974 | 20.23 | a | 20.15 | a | 30.71 | 35.62 | a | 43.14 | b | 50.85 | c | ----- | z | ----- | z | ----- | z | ----- | z | 29.65 | j | 16.44 | m | 33.45 | f | |
1975 | 17.64 | i | 21.19 | l | 29.75 | k | 27.00 | k | 39.70 | k | ----- | z | ----- | z | ----- | z | 48.65 | 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 | 38.77 | 41.45 | 52.66 | a | 54.47 | a | 54.71 | 46.66 | a | 40.82 | t | 31.00 | n | 23.35 | 44.58 | e | ||||
1987 | 20.25 | k | 14.67 | j | 19.59 | i | 32.20 | j | 40.87 | 45.57 | 49.61 | 51.14 | c | 43.24 | e | ----- | z | ----- | z | ----- | z | 46.09 | g | |||
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 | 20.76 | 23.80 | 27.07 | 33.11 | 39.83 | 48.07 | 56.28 | 55.38 | 48.16 | 37.78 | 27.41 | 22.40 | 36.79 | |||||||||||||
S.D. | 3.86 | 4.02 | 2.71 | 2.82 | 2.84 | 2.99 | 2.97 | 2.58 | 2.51 | 2.07 | 2.80 | 3.20 | 1.05 | |||||||||||||
SKEW | -1.08 | -0.68 | 0.06 | -0.24 | -0.92 | -0.11 | -0.93 | -1.34 | -0.23 | 0.25 | -0.64 | -0.23 | -0.44 | |||||||||||||
MAX | 29.17 | 30.10 | 33.19 | 39.67 | 44.94 | 56.48 | 61.29 | 59.42 | 53.28 | 42.52 | 34.67 | 28.68 | 39.00 | |||||||||||||
MIN | 5.65 | 13.14 | 20.45 | 23.57 | 29.72 | 39.97 | 46.58 | 45.13 | 43.07 | 33.68 | 19.17 | 15.13 | 33.48 | |||||||||||||
YRS | 56 | 58 | 58 | 60 | 59 | 61 | 59 | 56 | 59 | 55 | 58 | 57 | 45 |