YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1897 | 10.31 | m | 10.35 | d | 20.62 | g | 45.21 | a | 55.87 | 65.55 | 73.61 | 65.48 | 69.78 | 49.35 | 26.23 | 14.02 | 47.55 | b | ||||||||
1898 | 19.15 | 20.79 | 29.32 | 44.97 | 54.73 | 67.98 | 72.52 | f | ----- | z | ----- | z | 40.60 | k | 26.80 | 15.97 | 34.96 | d | ||||||||
1899 | 14.37 | 4.81 | b | 15.53 | 44.27 | 56.30 | a | 66.42 | 75.05 | 73.21 | 58.14 | b | 47.95 | 39.48 | 14.85 | 42.53 | ||||||||||
1900 | 19.69 | 10.50 | 26.87 | a | 52.05 | b | 62.95 | a | 69.05 | 70.76 | 74.84 | 59.85 | d | 53.11 | 27.03 | a | 24.61 | 45.94 | ||||||||
1901 | 17.07 | b | 14.28 | c | 31.58 | 47.81 | c | 58.70 | c | 66.79 | a | 77.48 | a | 72.00 | a | 58.50 | d | 51.05 | c | 33.75 | n | 16.47 | b | 46.52 | a | |
1902 | 17.14 | b | 16.38 | 33.79 | b | 43.57 | a | 60.07 | a | 62.20 | b | 70.62 | a | 67.45 | a | 56.50 | a | 48.40 | b | 32.20 | 10.85 | a | 43.26 | |||
1903 | 12.76 | b | 6.37 | b | 30.07 | a | 45.57 | a | 58.31 | 64.87 | 70.31 | 68.03 | 58.90 | d | 50.32 | 29.98 | j | 11.81 | m | 46.55 | b | |||||
1904 | 5.38 | a | 5.22 | b | 28.07 | b | 39.82 | b | 56.71 | b | 63.66 | b | 68.04 | e | 68.23 | c | 59.65 | d | 52.28 | b | 36.58 | 17.88 | c | 41.79 | ||
1905 | 5.43 | a | 10.24 | a | 36.58 | a | 43.40 | 52.37 | a | 65.05 | 67.65 | 71.06 | 64.26 | a | 44.12 | a | 35.39 | c | 19.71 | b | 42.94 | |||||
1906 | 18.10 | 18.80 | 21.39 | 49.58 | 57.58 | 65.08 | 69.18 | a | 69.95 | 63.58 | 47.12 | b | 29.53 | 17.10 | 43.92 | |||||||||||
1907 | 4.19 | b | 18.04 | 33.34 | b | 37.17 | 45.90 | j | 64.66 | a | 71.05 | a | 71.08 | 57.77 | 46.34 | b | 32.53 | a | 24.63 | a | 41.89 | a | ||||
1908 | 21.88 | e | 18.28 | 30.71 | 48.27 | 56.25 | a | 65.86 | a | 73.37 | d | 68.92 | 70.38 | a | 49.02 | f | 33.63 | 18.21 | b | 45.98 | a | |||||
1909 | 11.73 | 16.35 | d | 29.82 | 39.22 | 55.42 | a | 68.23 | 70.79 | 74.84 | b | 62.75 | r | 47.98 | b | 32.26 | c | 10.81 | d | 41.59 | a | |||||
1910 | 9.90 | a | 6.68 | 46.35 | 51.37 | 53.52 | ----- | z | 73.35 | 68.18 | a | 62.66 | b | 61.67 | j | ----- | z | 17.85 | d | 43.32 | c | |||||
1911 | 8.43 | a | 13.88 | d | 37.28 | b | 44.67 | a | 62.55 | b | 75.31 | a | 71.19 | b | 69.34 | i | 57.72 | a | 43.18 | a | 20.38 | f | 20.68 | c | 43.49 | b |
1912 | -1.50 | 16.81 | c | 22.60 | a | 49.77 | 58.21 | c | 65.40 | 70.90 | a | 68.87 | a | 59.62 | f | ----- | z | ----- | z | 21.84 | c | 41.43 | c | |||
1913 | 13.37 | e | 13.60 | b | 27.83 | g | 49.43 | a | 56.43 | c | 70.83 | 69.84 | 74.65 | 63.18 | 42.42 | a | 38.29 | a | 26.97 | 47.18 | a | |||||
1914 | 19.08 | f | 8.17 | a | 31.71 | 45.67 | a | 57.30 | a | 68.07 | a | 74.98 | 70.22 | f | 63.08 | 56.15 | g | 46.59 | s | 8.77 | 44.72 | d | ||||
1915 | 10.74 | 23.43 | a | 21.08 | 54.45 | a | 52.29 | b | 63.12 | a | 66.92 | 67.06 | 62.30 | 48.31 | 54.50 | w | 20.21 | 44.54 | a | |||||||
1916 | 0.37 | 11.62 | a | 31.77 | a | 44.03 | 56.40 | a | 64.32 | ----- | z | 69.60 | b | 58.20 | h | 40.64 | f | 28.55 | b | 7.98 | a | 34.96 | c | |||
1917 | 6.28 | d | 6.33 | a | 26.79 | 41.12 | 53.02 | a | 62.12 | a | 74.14 | b | 66.65 | a | 61.34 | h | ----- | z | 40.93 | a | 9.18 | a | 38.66 | b | ||
1918 | 6.72 | f | 18.31 | b | 39.82 | 42.43 | a | 58.17 | g | 67.45 | a | 70.02 | a | 72.15 | a | 55.68 | b | ----- | z | 35.37 | d | 24.77 | a | 47.33 | c | |
1919 | 27.65 | h | 16.02 | a | 28.58 | a | 44.48 | f | 60.82 | i | 73.66 | h | 73.78 | f | 70.21 | 62.74 | c | 40.59 | d | 27.00 | f | 11.68 | 38.30 | f | ||
1920 | ----- | z | 20.00 | a | 28.13 | d | 36.37 | 57.22 | a | 64.88 | a | 70.34 | 68.85 | d | ----- | z | 54.26 | b | 29.22 | a | 20.54 | h | 47.70 | c | ||
1921 | 21.23 | 23.33 | a | 34.35 | 47.74 | c | 56.33 | b | 67.17 | j | ----- | z | 69.84 | 58.16 | a | 46.67 | g | ----- | z | 24.78 | h | 44.43 | e | |||
1922 | 10.39 | 1.81 | b | 28.31 | 43.19 | a | 56.62 | a | 65.03 | 68.60 | e | 74.50 | i | ----- | z | 51.85 | a | 35.43 | a | 15.05 | 37.63 | b | ||||
1923 | 18.72 | b | 12.07 | a | 24.59 | i | 45.75 | 57.68 | c | 69.67 | a | 75.27 | 69.56 | v | 63.33 | o | 46.80 | a | 38.43 | 26.41 | i | 45.55 | d | |||
1924 | 5.71 | 23.84 | 28.32 | a | 46.33 | a | 48.36 | m | 62.78 | a | 67.23 | 69.70 | a | 58.39 | b | 57.31 | d | 31.07 | 9.45 | c | 41.83 | a | ||||
1925 | 10.02 | a | 21.22 | c | 36.65 | d | 53.48 | 55.35 | 66.67 | 69.98 | 73.62 | e | 67.00 | d | 35.18 | f | 37.11 | k | 18.47 | 47.25 | b | |||||
1926 | 15.02 | a | 26.05 | 28.78 | a | 54.54 | q | 64.80 | c | 64.93 | a | 73.60 | 72.53 | 60.40 | d | 48.18 | 27.36 | a | 15.19 | 45.17 | a | |||||
1927 | 16.95 | 23.64 | 34.89 | 45.84 | a | 52.80 | i | 64.00 | 68.60 | 70.75 | a | 65.37 | 51.90 | ----- | z | 2.60 | a | 44.45 | b | |||||||
1928 | 17.31 | 23.05 | a | 36.08 | a | 39.52 | b | 59.89 | 63.25 | 73.05 | 76.93 | j | 59.38 | 48.95 | 32.35 | f | 26.38 | a | 44.69 | b | ||||||
1929 | -0.91 | b | 6.94 | a | 34.77 | a | 46.20 | 54.32 | 67.30 | b | 76.54 | e | 73.94 | 56.43 | g | 47.74 | j | 27.83 | 18.82 | a | 40.57 | b | ||||
1930 | 4.21 | e | 31.63 | b | 33.16 | c | 49.33 | a | 55.15 | a | 65.98 | a | 80.13 | a | 77.58 | l | 61.62 | 47.08 | 34.37 | 25.02 | b | 44.33 | a | |||
1931 | 26.35 | 32.77 | b | 32.62 | b | 48.75 | 53.93 | a | 74.63 | 78.00 | 73.86 | b | 68.83 | 52.35 | 34.62 | 22.00 | a | 49.89 | ||||||||
1932 | 13.53 | b | 18.62 | ----- | z | 48.79 | a | 60.94 | 70.23 | 75.79 | 73.31 | 62.40 | a | 45.21 | 31.28 | 13.66 | 46.71 | a | ||||||||
1933 | 23.45 | 14.61 | 33.69 | 45.90 | a | 58.53 | 78.80 | 78.29 | 71.47 | a | 67.03 | ----- | z | 33.54 | r | 17.75 | a | 48.95 | b | |||||||
1934 | 20.96 | d | 23.59 | a | 30.52 | 46.57 | 70.67 | a | 72.38 | 78.07 | a | 72.02 | b | 57.25 | b | 53.27 | a | 37.73 | 17.88 | c | 48.41 | |||||
1935 | 12.44 | 29.21 | 37.00 | b | 41.50 | a | 52.38 | b | 62.60 | 80.00 | 71.57 | b | 63.18 | b | 46.15 | 26.15 | 18.05 | 45.02 | ||||||||
1936 | -1.81 | -9.29 | 31.50 | 40.64 | a | 62.60 | 69.30 | b | 85.03 | 77.13 | 65.45 | 45.77 | 27.18 | 19.89 | 42.78 | |||||||||||
1937 | -1.29 | 12.32 | 29.10 | 42.58 | 59.81 | 64.53 | 75.40 | 78.74 | 63.78 | 46.03 | a | 29.53 | 14.21 | 42.90 | ||||||||||||
1938 | 11.06 | 15.57 | 35.23 | 47.42 | 55.27 | 67.37 | 73.55 | 75.75 | a | 65.02 | 56.02 | 28.09 | b | 22.45 | 46.07 | |||||||||||
1939 | 21.81 | 6.96 | 32.11 | 44.82 | 64.85 | 66.90 | a | 75.94 | 71.50 | a | 65.47 | 47.92 | 36.58 | 28.29 | 46.93 | |||||||||||
1940 | 3.45 | 18.68 | a | 27.10 | 43.78 | 55.69 | 67.48 | c | 77.24 | 69.68 | a | 67.22 | 55.24 | b | 26.34 | b | 22.85 | 44.56 | ||||||||
1941 | 16.16 | b | 16.38 | 30.05 | 50.12 | 62.58 | 67.72 | 74.81 | 71.13 | a | 60.88 | a | 49.00 | 34.82 | 26.95 | 46.71 | ||||||||||
1942 | 20.52 | 21.09 | 33.92 | 50.85 | 53.68 | a | 64.60 | 70.11 | 70.23 | 56.60 | 48.05 | 32.58 | 14.44 | 44.72 | ||||||||||||
1943 | 4.02 | 20.73 | 24.90 | 47.27 | 53.06 | 66.22 | a | 73.26 | 71.21 | 57.22 | a | 50.98 | 30.97 | 23.28 | b | 43.59 | ||||||||||
1944 | 24.56 | 16.91 | 23.60 | 41.08 | 61.42 | 65.45 | 69.65 | 68.55 | 58.93 | 49.79 | 33.97 | a | 19.60 | 44.46 | ||||||||||||
1945 | 15.13 | 20.38 | 38.71 | 43.09 | a | 52.05 | 59.75 | 69.63 | 69.61 | 58.78 | 48.39 | 30.07 | 10.98 | 43.05 | ||||||||||||
1946 | 14.58 | 17.68 | 40.44 | 51.97 | 53.69 | 66.84 | a | 72.69 | 66.90 | 60.18 | 45.73 | 29.08 | 21.37 | 45.10 | ||||||||||||
1947 | 21.26 | d | 14.27 | 28.27 | 41.08 | 51.74 | 63.03 | 71.23 | 75.39 | 61.58 | 54.98 | 24.02 | a | 14.50 | 43.45 | |||||||||||
1948 | 9.83 | b | 12.54 | c | 25.20 | c | 51.62 | b | 57.57 | c | 64.45 | 71.45 | b | 70.35 | a | 65.42 | 48.00 | 33.00 | b | 18.05 | 43.96 | |||||
1949 | 8.26 | 13.64 | 30.11 | 47.97 | 61.11 | 67.68 | 73.32 | 73.18 | a | 57.47 | 48.66 | 39.50 | a | 18.06 | 44.91 | |||||||||||
1950 | 1.52 | c | 17.80 | c | 24.63 | 37.28 | 53.44 | 67.08 | 67.66 | 66.73 | 61.38 | 51.48 | 27.87 | 14.48 | c | 40.95 | ||||||||||
1951 | 10.66 | 23.18 | 20.29 | 41.50 | a | 57.98 | 60.43 | b | 69.65 | 68.61 | 57.65 | d | 46.81 | 27.98 | 10.77 | 41.29 | ||||||||||
1952 | 9.52 | 21.09 | 23.89 | 48.47 | 57.02 | 70.68 | 73.42 | 71.09 | d | 66.28 | c | 45.20 | a | 32.83 | a | 21.87 | 45.11 | |||||||||
1953 | 16.98 | 20.36 | 32.15 | 40.52 | 55.98 | 68.25 | 71.13 | 71.69 | 61.50 | 55.31 | 36.13 | 19.05 | 45.75 | |||||||||||||
1954 | 6.50 | 34.38 | 27.55 | 46.57 | 52.21 | 65.28 | 75.22 | a | 71.45 | a | 60.83 | 46.18 | 37.79 | d | 22.39 | 45.53 | ||||||||||
1955 | 16.06 | 12.23 | 28.68 | 54.53 | a | 63.06 | 65.08 | 77.82 | 75.74 | 61.40 | a | 50.43 | a | 21.83 | 8.79 | 44.64 | ||||||||||
1956 | 8.82 | 9.91 | a | 26.21 | 40.26 | a | 58.27 | 71.57 | 69.44 | 69.10 | 59.07 | 54.97 | 31.65 | 25.52 | 43.73 | |||||||||||
1957 | 7.55 | 19.57 | 31.05 | 44.50 | 55.81 | 64.29 | a | 75.72 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.13 | f | |||||
1958 | 23.33 | a | 16.57 | 30.21 | 46.35 | 61.27 | 62.52 | 67.81 | 73.08 | 64.33 | 50.97 | 34.43 | a | 15.38 | a | 45.52 | ||||||||||
1959 | 10.18 | 10.98 | c | 36.11 | 45.72 | a | 58.47 | 70.98 | a | 72.81 | 75.17 | a | 61.78 | 43.35 | 23.81 | c | 28.50 | 44.82 | ||||||||
1960 | 11.07 | a | 12.91 | 15.58 | 43.98 | b | 57.18 | a | 63.65 | 74.44 | 71.54 | c | 62.07 | 44.53 | o | 34.72 | 15.07 | c | 42.02 | a | ||||||
1961 | 9.80 | a | 21.00 | 36.97 | 41.37 | g | 54.94 | d | 68.77 | ----- | z | 73.98 | j | 53.83 | l | 49.63 | e | 33.24 | c | 12.73 | g | 39.19 | e | |||
1962 | 8.95 | c | ----- | z | ----- | z | 45.20 | 60.41 | i | 66.69 | f | 70.39 | c | ----- | z | ----- | z | ----- | z | ----- | z | 17.00 | p | 41.51 | i | |
1963 | 4.12 | c | 17.69 | b | 39.48 | 47.87 | 59.03 | a | 70.10 | 75.61 | 73.35 | a | 64.48 | 59.31 | 34.24 | a | 9.55 | b | 46.24 | |||||||
1964 | 20.02 | 26.22 | 25.45 | 48.33 | 61.98 | a | 69.85 | 78.53 | 68.33 | e | 59.36 | a | 48.50 | b | 30.61 | c | 10.98 | i | 48.84 | a | ||||||
1965 | 6.87 | a | 13.59 | 19.76 | 44.86 | b | 57.66 | 65.15 | 74.45 | 70.87 | 49.67 | ----- | z | 32.97 | 28.06 | 42.17 | a | |||||||||
1966 | 3.26 | ----- | z | 36.53 | 40.13 | 55.11 | 67.15 | 77.87 | 66.39 | 58.69 | a | 48.52 | 29.84 | b | 19.77 | 45.75 | a | |||||||||
1967 | 16.69 | 13.64 | 35.00 | 47.05 | 53.50 | 65.83 | 70.87 | 74.31 | ----- | z | ----- | z | ----- | z | 16.20 | h | 47.11 | d | ||||||||
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.93 | q | 74.31 | e | 64.88 | d | 43.57 | i | 34.04 | g | 20.48 | b | 53.23 | i |
1970 | ----- | z | ----- | z | ----- | z | 46.82 | p | 59.00 | b | 69.77 | b | 74.17 | g | 74.97 | l | 65.33 | i | ----- | z | ----- | z | ----- | z | 64.38 | j |
1971 | ----- | z | ----- | z | ----- | z | 47.15 | t | 54.26 | j | 71.58 | d | 67.83 | j | 73.70 | d | 60.50 | m | 48.88 | j | 32.62 | m | 13.42 | g | 72.64 | j |
1972 | 4.02 | b | 9.48 | h | 29.96 | g | 43.30 | 59.43 | a | 65.74 | g | 69.42 | e | 71.33 | d | ----- | z | 46.12 | g | 28.41 | g | ----- | z | 49.50 | g | |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | 57.55 | l | 70.34 | n | 75.37 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.77 | p | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 11.84 | 16.33 | 30.46 | 45.50 | 57.39 | 66.73 | 72.92 | 71.25 | 61.54 | 49.28 | 31.89 | 17.94 | 44.56 | |||||||||||||
S.D. | 7.13 | 7.42 | 5.90 | 4.12 | 3.68 | 3.43 | 3.72 | 2.84 | 3.86 | 3.90 | 4.37 | 5.79 | 1.91 | |||||||||||||
SKEW | -0.02 | -0.29 | -0.21 | 0.02 | 0.87 | 0.87 | 0.65 | 0.21 | -0.04 | 0.33 | -0.06 | -0.19 | 0.51 | |||||||||||||
MAX | 26.35 | 34.38 | 46.35 | 54.53 | 70.67 | 78.80 | 85.03 | 78.74 | 70.38 | 59.31 | 40.93 | 28.50 | 49.89 | |||||||||||||
MIN | -1.81 | -9.29 | 15.53 | 36.37 | 51.74 | 59.75 | 66.92 | 65.48 | 49.67 | 40.59 | 21.83 | 2.60 | 40.95 | |||||||||||||
YRS | 67 | 69 | 66 | 69 | 67 | 69 | 66 | 64 | 59 | 54 | 55 | 63 | 33 |