YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1905 | 24.36 | b | 28.35 | b | 42.76 | j | 45.65 | c | 49.64 | j | 59.79 | f | 64.90 | e | 64.37 | 58.23 | 43.08 | r | 37.17 | 21.58 | a | 43.08 | d | |||
1906 | ----- | z | 34.14 | 39.73 | a | 45.95 | 52.70 | a | 56.77 | h | 65.56 | 65.26 | b | 57.48 | c | 47.90 | a | 37.40 | a | 32.40 | a | 47.85 | b | |||
1907 | 30.54 | q | 44.93 | n | 43.26 | h | ----- | z | 51.57 | b | 60.54 | c | 69.15 | 67.03 | 59.40 | a | 53.05 | 34.10 | 27.19 | b | 52.75 | d | ||||
1908 | ----- | z | 33.66 | 41.45 | 46.93 | 50.15 | 60.52 | 69.24 | 64.56 | 57.67 | 42.48 | 31.95 | 25.92 | 47.68 | a | |||||||||||
1909 | 28.44 | 29.32 | 37.82 | 44.82 | 49.10 | 61.13 | 68.15 | 66.65 | 57.52 | 48.76 | 38.18 | b | 13.07 | b | 45.24 | |||||||||||
1910 | 24.67 | b | 28.61 | a | 44.18 | 47.93 | 53.19 | b | 63.42 | 66.00 | a | 64.59 | c | 57.80 | ----- | z | 38.63 | 27.21 | j | 48.90 | b | |||||
1911 | 32.02 | 33.69 | a | 43.72 | a | 48.64 | a | 57.95 | 66.23 | 68.44 | 69.24 | 63.42 | 48.11 | 34.90 | 23.19 | 49.13 | ||||||||||
1912 | 25.85 | 33.07 | 39.81 | b | 45.78 | 56.97 | 64.80 | 69.52 | 68.92 | 56.48 | 48.93 | a | 38.53 | 20.62 | a | 47.44 | ||||||||||
1913 | 19.90 | 29.82 | 37.27 | c | 49.08 | 59.18 | a | 64.70 | 69.85 | 71.24 | 58.45 | 47.03 | 41.50 | b | 21.11 | 47.43 | ||||||||||
1914 | 25.53 | 29.30 | a | 39.84 | 49.38 | a | 57.60 | 64.79 | a | 69.98 | 68.50 | 62.79 | a | 49.97 | 39.75 | 22.98 | 48.37 | |||||||||
1915 | 18.71 | 31.20 | 39.40 | a | 51.83 | 54.55 | a | 63.08 | 71.29 | 69.19 | 61.42 | 51.13 | a | 37.36 | b | 28.42 | 48.13 | |||||||||
1916 | 28.15 | 34.72 | 42.95 | 49.73 | 57.18 | 67.18 | 71.68 | 67.93 | b | 60.33 | 48.06 | 33.53 | 23.90 | 48.78 | ||||||||||||
1917 | 18.56 | 29.04 | 33.63 | 44.97 | 50.92 | 65.58 | 74.10 | 68.39 | 61.38 | 49.00 | 40.25 | b | 33.03 | 47.40 | ||||||||||||
1918 | 21.36 | b | 27.43 | e | 43.38 | c | 45.69 | f | 57.64 | f | 70.93 | b | 69.94 | 68.81 | b | 59.95 | b | 51.66 | 33.30 | 24.52 | a | 47.13 | b | |||
1919 | 16.60 | 26.71 | b | 38.02 | a | 49.58 | 60.45 | 67.60 | 74.00 | b | 71.77 | a | 64.25 | 46.33 | d | 35.43 | b | 22.15 | 47.74 | |||||||
1920 | 24.05 | 33.40 | 37.75 | a | 42.23 | b | 58.90 | 66.00 | a | 71.61 | 68.48 | 60.40 | 49.93 | d | 37.50 | 23.98 | e | 47.85 | ||||||||
1921 | 30.52 | 34.55 | 44.85 | 46.80 | 58.70 | a | 67.20 | 72.00 | 68.79 | 63.67 | 54.43 | a | 40.47 | 35.06 | 51.42 | |||||||||||
1922 | 24.37 | 31.30 | 37.58 | 44.85 | 57.83 | a | 69.25 | 72.75 | a | 71.48 | a | 63.59 | a | 49.87 | 36.91 | a | 30.90 | 49.22 | ||||||||
1923 | 32.94 | 30.91 | a | 35.08 | 47.71 | b | 58.37 | a | 66.33 | 73.15 | a | 68.08 | a | 59.10 | 47.18 | a | 37.10 | 25.16 | 48.43 | |||||||
1924 | 17.37 | 33.57 | 33.85 | a | 45.93 | a | 55.35 | 67.59 | a | 71.40 | 67.73 | 58.81 | a | 50.72 | b | 37.68 | 20.89 | 46.74 | ||||||||
1925 | 16.21 | 30.32 | 42.31 | 51.05 | 62.15 | a | 66.45 | 73.31 | 67.55 | 61.37 | 49.02 | a | 35.73 | 28.84 | 48.69 | |||||||||||
1926 | 24.97 | a | 34.52 | 38.37 | 51.18 | 57.58 | a | 68.13 | 70.61 | 70.23 | 61.62 | 50.92 | 38.73 | 25.28 | a | 49.35 | ||||||||||
1927 | 28.42 | a | 35.46 | a | 36.26 | 49.35 | 58.71 | 66.35 | 71.37 | 66.79 | 61.12 | 51.23 | 41.38 | a | 23.48 | a | 49.16 | |||||||||
1928 | 29.66 | 32.09 | a | 40.96 | c | 45.48 | 56.95 | 64.48 | a | 71.94 | 68.85 | e | 63.03 | 51.55 | c | 36.70 | 22.47 | a | 48.68 | |||||||
1929 | 21.57 | a | 23.28 | c | 37.68 | 46.41 | c | 56.22 | a | 67.53 | 71.95 | 69.97 | 58.13 | 47.98 | c | 30.07 | 27.27 | 46.50 | ||||||||
1930 | 15.76 | d | 32.70 | a | 38.00 | 52.87 | 54.97 | 67.58 | 71.31 | 70.05 | a | 61.78 | 49.10 | 33.40 | 19.93 | a | 47.29 | |||||||||
1931 | 23.38 | b | 35.95 | 36.65 | a | 49.29 | a | 56.06 | 70.32 | b | 76.10 | a | 71.47 | 64.82 | 52.22 | d | 33.46 | c | 19.90 | b | 49.14 | |||||
1932 | 19.79 | 34.98 | b | 37.19 | b | 47.95 | i | 59.07 | a | 66.30 | 73.74 | 70.66 | 61.87 | 49.57 | b | 37.47 | 21.26 | 48.35 | a | |||||||
1933 | 21.44 | 19.13 | b | 40.83 | b | 44.07 | a | 53.68 | a | 70.98 | d | 76.21 | c | 70.20 | k | 66.08 | 54.15 | d | 40.43 | i | 33.12 | a | 47.97 | b | ||
1934 | 31.45 | 39.25 | 46.95 | 54.22 | 63.98 | 67.98 | b | 76.56 | 73.79 | 62.19 | a | 53.16 | 39.05 | 30.22 | a | 53.23 | ||||||||||
1935 | 31.55 | a | 33.89 | 39.98 | 49.38 | b | 55.58 | 69.68 | 74.60 | 71.97 | 62.90 | 50.68 | a | 37.27 | 28.50 | 50.50 | ||||||||||
1936 | 27.13 | 33.59 | a | 41.88 | a | 50.82 | 60.76 | 70.42 | 74.21 | 71.37 | a | 61.52 | b | 48.48 | a | 33.54 | b | 26.37 | a | 50.01 | ||||||
1937 | 13.93 | c | 29.17 | b | 37.63 | a | 46.43 | 57.85 | 64.80 | 71.07 | a | 70.06 | 62.57 | 50.05 | 38.94 | c | 27.78 | b | 47.52 | |||||||
1938 | 26.17 | a | 31.54 | d | 38.67 | d | 48.80 | e | 54.05 | 64.38 | 70.06 | 72.73 | 62.93 | 51.34 | 30.20 | c | 26.69 | b | 48.13 | |||||||
1939 | 25.58 | 20.11 | a | 39.82 | 51.00 | c | 60.66 | b | 67.78 | a | 74.52 | 71.52 | 63.87 | 49.45 | 39.19 | a | 30.94 | 49.54 | ||||||||
1940 | 23.11 | d | 32.40 | e | 42.54 | d | 49.03 | a | 61.88 | a | 69.63 | 74.02 | 70.81 | 63.30 | 51.00 | 34.67 | 27.88 | f | 52.03 | a | ||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.05 | 31.18 | 39.59 | 48.10 | 56.79 | 66.46 | 71.51 | 69.11 | 61.15 | 49.84 | 36.61 | 25.53 | 48.56 | |||||||||||||
S.D. | 5.16 | 4.22 | 3.11 | 2.74 | 3.51 | 2.76 | 2.84 | 2.35 | 2.43 | 2.36 | 2.94 | 4.72 | 1.59 | |||||||||||||
SKEW | -0.12 | -1.11 | 0.25 | 0.10 | -0.28 | -0.39 | -0.38 | -0.30 | -0.16 | -0.53 | -0.47 | -0.08 | 0.77 | |||||||||||||
MAX | 32.94 | 39.25 | 46.95 | 54.22 | 63.98 | 70.98 | 76.56 | 73.79 | 66.08 | 54.43 | 41.50 | 35.06 | 53.23 | |||||||||||||
MIN | 13.93 | 19.13 | 33.63 | 42.23 | 49.10 | 60.52 | 64.90 | 64.37 | 56.48 | 42.48 | 30.07 | 13.07 | 45.24 | |||||||||||||
YRS | 33 | 35 | 34 | 33 | 34 | 34 | 36 | 35 | 36 | 34 | 35 | 34 | 27 |