YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1903 | 24.15 | r | 4.57 | 29.57 | a | 31.23 | 37.67 | a | 48.97 | a | 52.07 | a | 55.20 | a | 43.43 | b | 34.03 | a | 25.13 | 10.68 | 33.87 | a | ||||
1904 | 10.50 | c | 25.59 | b | 28.55 | 31.65 | d | 40.42 | 46.40 | 53.97 | 56.00 | c | 46.83 | a | 32.77 | a | 25.57 | 18.94 | 34.76 | |||||||
1905 | 18.97 | 21.61 | 31.39 | 36.67 | 37.28 | b | 47.47 | 54.97 | a | 54.97 | a | 46.07 | 29.29 | 25.73 | 11.77 | a | 34.68 | |||||||||
1906 | ----- | z | 24.37 | a | 27.35 | 35.27 | 41.57 | a | 42.97 | 55.97 | b | 54.07 | b | 44.90 | a | 30.90 | b | 22.89 | b | 26.23 | a | 36.95 | a | |||
1907 | 16.97 | 28.93 | 32.32 | 36.87 | 38.59 | b | 42.46 | d | 53.73 | a | 51.24 | b | 41.71 | b | 36.75 | o | 22.83 | 21.57 | c | 35.20 | a | |||||
1908 | 20.34 | b | 23.59 | b | 25.10 | a | 35.83 | a | 36.54 | c | 41.65 | g | 53.89 | v | 61.68 | i | 49.89 | c | 21.23 | a | 20.00 | v | 15.84 | f | 30.36 | e |
1909 | 25.40 | f | 22.05 | g | 27.39 | c | 31.32 | e | 35.88 | e | 51.31 | a | 57.07 | d | 59.19 | 46.04 | c | 35.80 | a | 25.93 | c | ----- | z | 41.10 | c | |
1910 | 12.89 | d | 18.00 | c | 32.29 | j | 37.72 | e | 41.89 | m | 50.20 | e | 58.81 | o | 56.87 | a | 51.37 | 36.84 | 30.97 | a | ----- | z | 36.86 | d | ||
1911 | ----- | z | 3.82 | q | 28.62 | j | 30.38 | q | 38.97 | a | 48.78 | c | ----- | z | 53.39 | ----- | z | ----- | z | ----- | z | 20.79 | g | 47.04 | i | |
1912 | 15.48 | b | 15.86 | a | 24.00 | e | 20.88 | e | ----- | z | 36.50 | t | 48.85 | r | 48.21 | l | 35.92 | r | 28.75 | o | 25.76 | m | 10.80 | p | 19.05 | h |
1913 | 4.00 | q | ----- | z | 20.59 | n | 33.47 | k | 42.04 | g | 45.25 | b | 54.67 | g | 53.86 | i | 42.17 | g | 29.12 | e | 25.06 | n | 7.08 | s | 37.18 | j |
1914 | 12.38 | w | ----- | z | ----- | z | ----- | z | ----- | z | 48.11 | l | 54.30 | k | 52.29 | g | 43.53 | o | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.24 | m | 10.39 | m | ----- | z |
1916 | 11.54 | r | 23.54 | p | 26.14 | q | 33.89 | l | 36.43 | j | 43.74 | c | 53.46 | r | 50.89 | c | 43.07 | a | 31.62 | g | 19.31 | a | 11.23 | i | 39.25 | h |
1917 | -2.21 | g | 20.82 | f | 12.50 | o | 30.71 | m | 36.92 | s | 45.44 | c | 54.73 | t | 50.29 | x | ----- | z | ----- | z | ----- | z | ----- | z | 45.44 | k |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | 42.48 | f | 44.52 | i | 56.06 | 52.47 | l | 39.20 | y | ----- | z | 20.12 | m | 16.03 | 36.05 | j | ||
1952 | 16.16 | 18.03 | 20.06 | 32.80 | 41.35 | 47.67 | 52.35 | 52.94 | 45.07 | 35.29 | 15.37 | 15.94 | 32.75 | |||||||||||||
1953 | 24.58 | 19.46 | 25.33 | a | 30.53 | 32.42 | 45.13 | 56.35 | 47.50 | w | 38.33 | u | 29.03 | ----- | z | 7.61 | 30.05 | c | ||||||||
1954 | ----- | z | ----- | z | 16.67 | m | ----- | z | ----- | z | 47.43 | b | 59.17 | b | 55.04 | d | 46.73 | 35.35 | 25.70 | c | 13.58 | 40.43 | e | |||
1955 | 5.48 | 12.86 | 26.16 | 32.57 | 42.18 | i | 50.43 | 58.30 | a | 58.97 | 44.30 | 35.45 | 22.97 | ----- | z | 34.75 | b | |||||||||
1956 | ----- | z | 9.29 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.48 | 14.20 | 12.84 | 20.51 | i | |||
1957 | 10.74 | 25.64 | 27.33 | a | 31.77 | 38.52 | 50.34 | a | 56.35 | 59.00 | 43.67 | 35.42 | 20.23 | 21.00 | 35.00 | |||||||||||
1958 | 16.26 | 27.71 | 24.26 | 29.63 | 43.00 | 47.53 | 54.26 | 56.87 | 45.83 | 33.71 | 21.00 | 23.65 | 35.31 | |||||||||||||
1959 | 20.77 | 21.46 | 24.90 | 33.30 | 37.60 | a | 49.97 | 57.19 | 55.13 | 44.70 | 34.58 | 20.70 | 15.29 | 34.63 | ||||||||||||
1960 | 11.84 | 18.90 | 25.26 | 32.17 | 39.65 | 50.73 | 58.48 | 54.26 | 49.17 | 36.13 | 28.17 | 17.00 | 35.15 | |||||||||||||
1961 | 11.81 | 24.14 | 27.10 | 29.97 | a | 40.07 | a | 50.73 | 58.16 | 57.32 | 42.43 | 33.26 | 22.57 | 17.32 | 34.57 | |||||||||||
1962 | 7.23 | 21.75 | 22.19 | 35.43 | 40.26 | 47.70 | 54.48 | 52.87 | 45.40 | 37.42 | 27.33 | 13.00 | 33.76 | |||||||||||||
1963 | 10.48 | 26.29 | 23.31 | b | 29.47 | 43.90 | 45.30 | 56.81 | 57.94 | 50.43 | 41.16 | 27.90 | a | 12.58 | 35.46 | |||||||||||
1964 | 13.35 | 13.28 | 20.74 | 31.40 | 39.10 | 45.87 | 58.26 | 54.06 | 42.07 | 34.88 | g | 20.53 | 24.48 | d | 33.01 | a | ||||||||||
1965 | 21.52 | 19.11 | 20.52 | 33.97 | 36.97 | 46.20 | 55.29 | 52.74 | 40.23 | 34.19 | 30.40 | 19.74 | 34.24 | |||||||||||||
1966 | 14.23 | 16.93 | 25.06 | 31.03 | 43.77 | 49.90 | 59.26 | 54.19 | 48.00 | 33.48 | 28.00 | 16.97 | b | 35.07 | ||||||||||||
1967 | 17.74 | 22.75 | 30.03 | 28.23 | 39.37 | a | 45.48 | e | 57.67 | a | 56.32 | 45.60 | 34.77 | 26.57 | 10.65 | 34.60 | ||||||||||
1968 | 14.65 | 26.93 | 26.94 | 28.93 | 38.61 | 48.20 | 56.65 | 50.58 | 42.03 | 35.10 | 25.73 | 15.58 | 34.16 | |||||||||||||
1969 | 26.23 | 21.39 | 23.13 | 33.73 | 45.48 | 47.80 | 57.28 | b | 59.71 | 50.27 | 30.90 | 22.10 | 19.71 | 36.48 | ||||||||||||
1970 | 19.71 | 23.86 | 23.90 | 27.40 | 40.29 | 48.83 | 57.54 | e | 58.58 | e | 41.00 | 30.32 | 27.93 | 16.19 | 34.63 | |||||||||||
1971 | 18.45 | 18.11 | 24.87 | 32.17 | 40.07 | b | 49.13 | 55.65 | 58.10 | 42.43 | b | 32.23 | 24.43 | 17.26 | 34.41 | |||||||||||
1972 | 18.68 | 21.90 | 29.42 | 33.13 | 40.10 | 52.83 | 57.62 | r | 54.87 | 45.93 | a | 39.39 | 24.57 | 10.13 | 33.72 | a | ||||||||||
1973 | 11.16 | 25.29 | 25.61 | 32.13 | 42.55 | 49.97 | 56.10 | 57.35 | 43.03 | 34.80 | a | 29.60 | 22.29 | 35.82 | ||||||||||||
1974 | 16.97 | 21.32 | 31.68 | 31.93 | 43.53 | a | 51.80 | 58.90 | b | 53.43 | j | 46.77 | 37.42 | 28.17 | 16.77 | 35.02 | a | |||||||||
1975 | 14.81 | 22.14 | 26.77 | 28.50 | 35.53 | a | 46.93 | a | 57.52 | b | 53.45 | b | 43.24 | e | 34.42 | 21.93 | 19.94 | 33.77 | ||||||||
1976 | 15.19 | 24.10 | 20.33 | a | 31.17 | 43.32 | c | 46.05 | h | 57.86 | b | 50.56 | o | 46.57 | 32.71 | 23.60 | 11.80 | a | 30.67 | b | ||||||
1977 | 12.84 | 16.75 | 21.13 | 33.90 | 38.16 | f | 52.73 | h | 56.93 | d | 55.04 | h | 48.63 | 35.97 | 26.23 | 24.16 | 30.73 | c | ||||||||
1978 | 23.90 | 26.82 | 33.07 | b | 33.20 | 36.39 | 48.04 | b | 55.14 | c | 53.16 | l | 42.57 | 35.45 | 23.17 | 12.11 | d | 33.62 | a | |||||||
1979 | 10.06 | 21.18 | 27.16 | 34.15 | c | 41.03 | a | 47.34 | a | 56.52 | f | 51.25 | k | 46.73 | 37.06 | 20.47 | 18.79 | b | 30.40 | b | ||||||
1980 | 16.87 | 22.90 | 25.60 | a | 32.37 | 39.12 | e | 45.53 | 56.19 | 51.18 | n | 46.00 | 31.36 | c | 26.96 | d | 21.10 | 33.09 | a | |||||||
1981 | 20.45 | 22.21 | 27.87 | 35.80 | 40.00 | b | 50.46 | b | 59.39 | c | 56.26 | 48.83 | 34.52 | 29.77 | 23.79 | c | 37.45 | |||||||||
1982 | 16.90 | 18.75 | 27.58 | 28.71 | b | 38.64 | f | 44.69 | a | 56.73 | e | 58.32 | f | 45.97 | 32.07 | d | 24.13 | 20.26 | 31.58 | b | ||||||
1983 | 20.26 | 25.18 | 30.19 | 28.50 | b | 34.00 | d | 45.77 | 54.04 | c | 55.74 | h | 47.03 | 37.00 | c | ----- | z | ----- | z | 35.77 | c | |||||
1984 | 11.19 | 15.48 | 21.58 | 28.77 | 39.39 | 44.33 | 56.13 | 54.90 | 46.53 | 32.55 | 26.05 | j | 14.38 | j | 35.09 | b | ||||||||||
1985 | 10.52 | 18.48 | g | 26.23 | 35.03 | 44.12 | w | 51.91 | g | 59.23 | a | 56.30 | d | 42.62 | a | 34.71 | 24.03 | a | 12.87 | 33.50 | c | |||||
1986 | 21.90 | 27.16 | c | 31.29 | c | 33.21 | b | 39.37 | l | 53.33 | 54.63 | a | 58.26 | 41.83 | 33.77 | a | 28.24 | a | 16.29 | 36.36 | a | |||||
1987 | 8.94 | 24.04 | a | 25.55 | b | 34.66 | a | 42.56 | d | 49.83 | a | 53.53 | a | 53.86 | c | 43.67 | 36.77 | a | 27.03 | 16.61 | 34.75 | |||||
1988 | 6.87 | h | 20.70 | b | 24.54 | e | 35.12 | e | 38.12 | o | 52.08 | d | 58.97 | b | 51.76 | j | 43.57 | 40.00 | b | 24.85 | c | 13.00 | f | 37.48 | d | |
1989 | 8.78 | h | 14.35 | e | ----- | z | ----- | z | ----- | z | ----- | z | 59.10 | b | 55.30 | a | 44.87 | 35.48 | 24.70 | 14.39 | 35.46 | e | ||||
1990 | 18.16 | 12.30 | a | 28.71 | 37.33 | 39.90 | 49.57 | 58.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.94 | e | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 15.74 | 20.99 | 26.16 | 32.21 | 39.60 | 48.00 | 56.57 | 55.47 | 45.27 | 34.17 | 24.60 | 16.92 | 34.83 | |||||||||||||
S.D. | 4.84 | 4.91 | 3.35 | 3.16 | 2.84 | 2.66 | 1.95 | 2.41 | 2.70 | 3.33 | 3.66 | 4.52 | 0.98 | |||||||||||||
SKEW | 0.06 | -0.95 | 0.07 | -0.86 | -0.24 | -0.06 | -0.43 | -0.11 | 0.33 | -1.16 | -0.69 | 0.12 | 0.64 | |||||||||||||
MAX | 26.23 | 28.93 | 33.07 | 37.72 | 45.48 | 53.33 | 59.39 | 59.71 | 51.37 | 41.16 | 30.97 | 26.23 | 37.45 | |||||||||||||
MIN | 5.48 | 4.57 | 20.06 | 20.88 | 32.42 | 42.46 | 52.07 | 50.58 | 40.23 | 21.23 | 14.20 | 7.61 | 32.75 | |||||||||||||
YRS | 41 | 44 | 44 | 45 | 38 | 45 | 43 | 36 | 45 | 45 | 43 | 40 | 21 |