YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1899 | ----- | z | ----- | z | ----- | z | ----- | z | 37.25 | g | 45.40 | 50.81 | 56.16 | 45.67 | 42.10 | 35.67 | 19.47 | a | 42.18 | e | ||||||
1900 | 16.71 | 3.04 | a | 10.65 | 32.10 | 38.00 | 45.60 | 51.10 | 57.61 | 51.07 | 48.61 | 27.67 | 20.53 | a | 33.56 | |||||||||||
1901 | 13.29 | 8.21 | 15.76 | f | ----- | z | 38.10 | 46.07 | 52.31 | b | 56.10 | a | 49.00 | a | 39.65 | 27.57 | 17.13 | 34.74 | b | |||||||
1902 | 13.37 | a | 13.75 | t | 25.48 | 31.13 | 38.26 | 43.07 | 54.65 | 53.94 | 48.37 | 40.03 | 32.00 | 17.96 | e | 36.20 | a | |||||||||
1903 | 11.92 | e | 11.23 | b | 23.17 | a | 31.03 | 38.52 | 43.00 | a | 51.00 | 49.81 | 46.90 | j | 40.19 | 39.60 | t | ----- | z | 33.32 | c | |||||
1904 | ----- | z | ----- | z | ----- | z | 24.89 | l | 35.67 | d | 43.64 | b | 50.31 | b | 52.84 | 45.93 | 38.68 | c | 31.63 | 15.40 | a | 39.26 | d | |||
1905 | 10.68 | 5.18 | 15.66 | b | 29.60 | 37.00 | 43.10 | a | 49.19 | 53.39 | 48.63 | 39.20 | a | 28.83 | 21.58 | 31.84 | ||||||||||
1906 | 19.74 | 9.96 | 15.16 | 34.33 | 35.03 | 43.27 | 48.19 | 53.94 | 53.20 | 40.16 | 32.17 | 15.50 | i | 35.01 | a | |||||||||||
1907 | 7.25 | c | 5.04 | 17.94 | 23.52 | a | 31.70 | a | 44.73 | 52.94 | 50.68 | 46.45 | a | 36.74 | 29.20 | 23.14 | j | 31.47 | a | |||||||
1908 | 14.59 | i | 14.17 | 18.83 | a | 29.66 | a | 38.14 | b | 46.40 | 53.55 | 55.00 | a | 53.76 | a | 42.55 | 31.83 | a | 16.62 | j | 38.39 | b | ||||
1909 | ----- | z | 11.88 | b | 20.35 | 27.17 | 34.90 | 43.67 | 52.17 | a | 54.63 | a | 47.55 | a | 39.71 | 32.55 | a | 20.06 | 34.97 | a | ||||||
1910 | 15.47 | a | 9.25 | 25.52 | 32.50 | 33.87 | 46.53 | 54.19 | 53.90 | 47.76 | a | 40.60 | a | 28.40 | 16.32 | 33.69 | ||||||||||
1911 | 9.26 | 16.85 | a | 21.77 | a | 29.22 | c | 41.29 | 43.80 | 53.39 | 52.52 | 44.97 | a | 38.61 | 24.57 | 25.23 | 33.46 | |||||||||
1912 | -2.62 | b | 3.28 | 7.68 | 27.83 | 38.18 | c | 45.87 | 52.61 | 48.63 | a | 49.41 | a | 42.70 | a | 30.50 | 16.83 | g | 31.28 | a | ||||||
1913 | ----- | z | ----- | z | ----- | z | 32.70 | 36.06 | 45.10 | 49.90 | 50.29 | 47.70 | 38.57 | a | 33.17 | 25.27 | a | 39.86 | c | |||||||
1914 | 16.07 | c | 3.38 | b | 16.50 | a | 25.37 | 41.00 | b | 43.07 | 48.59 | b | 51.37 | a | 49.23 | 43.13 | 28.21 | a | 16.60 | a | 31.88 | |||||
1915 | 10.94 | 16.00 | 18.26 | 33.67 | 35.74 | 42.73 | 47.47 | a | 47.10 | 47.93 | 36.63 | a | 30.03 | 19.97 | 32.21 | |||||||||||
1916 | 11.47 | a | 7.00 | a | 8.50 | a | 30.03 | 35.81 | 41.40 | 53.72 | b | 54.65 | 41.17 | 36.48 | 24.53 | 12.57 | a | 29.78 | ||||||||
1917 | 7.19 | -2.50 | 14.23 | 25.67 | 33.07 | a | 40.73 | 49.32 | 47.23 | 47.13 | 32.29 | 30.27 | 8.24 | b | 27.74 | |||||||||||
1918 | 0.71 | -0.74 | a | 17.77 | a | 27.67 | 35.70 | a | 43.23 | 51.03 | 54.71 | 40.73 | 38.33 | a | 30.30 | 25.93 | a | 30.45 | ||||||||
1919 | 18.90 | 18.61 | 20.68 | 30.19 | d | 38.10 | 49.27 | 56.87 | 53.55 | 47.30 | 36.67 | a | 27.34 | a | 10.59 | d | 34.01 | |||||||||
1920 | 9.93 | p | 5.52 | d | 17.30 | a | 24.75 | b | 37.74 | 42.13 | 50.61 | h | 58.16 | 48.03 | 46.13 | 28.23 | 21.30 | a | 32.93 | b | ||||||
1921 | 16.93 | b | ----- | z | 22.08 | e | 33.20 | 39.13 | 53.41 | a | 61.87 | a | 57.00 | 53.63 | 41.59 | b | 24.21 | b | 19.83 | b | 38.44 | a | ||||
1922 | 12.40 | a | 9.75 | 19.90 | a | 30.59 | a | 42.87 | a | 48.31 | a | 58.97 | b | 56.16 | 51.00 | 36.76 | b | 31.13 | 12.61 | c | 34.20 | |||||
1923 | 11.52 | 3.58 | b | 5.29 | 24.67 | 35.35 | 46.63 | 56.94 | 50.48 | 45.73 | 36.50 | a | 30.83 | a | 25.50 | a | 31.08 | |||||||||
1924 | 2.45 | b | 13.00 | b | 17.93 | a | 29.29 | b | 32.94 | 42.07 | 48.19 | 50.07 | a | 43.83 | f | 39.84 | 25.44 | c | 9.17 | a | 28.22 | a | ||||
1925 | 10.16 | 10.11 | a | 15.74 | 31.43 | b | 34.03 | 41.07 | 51.68 | 54.79 | b | 48.07 | 31.90 | b | 25.14 | a | 15.83 | a | 30.83 | |||||||
1926 | ----- | z | ----- | z | 10.77 | 23.90 | a | 35.30 | a | 40.13 | 46.65 | 56.10 | b | 43.57 | 34.63 | a | 23.38 | a | 12.84 | 32.73 | b | |||||
1927 | 7.57 | a | 10.14 | 21.87 | a | 30.47 | 34.55 | 46.10 | a | ----- | z | 50.07 | a | 51.60 | ----- | z | 26.50 | ----- | z | 30.98 | c | |||||
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 | 17.48 | c | 24.58 | e | ----- | z | 42.79 | c | 55.66 | a | ----- | z | ----- | z | 48.77 | 44.10 | 30.14 | a | 18.03 | a | 35.19 | d | ||
1950 | 8.61 | 13.79 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.16 | 46.50 | 41.35 | 26.17 | a | 17.63 | a | 28.75 | e | |||||
1951 | 14.45 | 13.29 | 18.39 | 31.97 | 40.65 | 42.62 | a | 54.10 | 51.61 | 45.37 | 38.32 | 23.69 | a | 17.58 | 32.67 | |||||||||||
1952 | 13.32 | 18.14 | 19.97 | 34.31 | a | 38.61 | 47.33 | 53.40 | a | 55.81 | 51.80 | 36.63 | a | 31.30 | 24.74 | 35.45 | ||||||||||
1953 | 16.39 | 16.25 | 23.03 | 30.37 | 37.77 | 46.33 | 55.29 | 58.90 | 50.53 | 44.16 | 33.83 | 20.45 | 36.11 | |||||||||||||
1954 | 11.32 | 22.21 | 20.87 | 28.80 | 34.33 | a | 46.28 | a | 52.84 | 55.68 | 48.07 | 40.13 | 32.70 | 21.87 | 34.59 | |||||||||||
1955 | 16.13 | a | 14.43 | 16.16 | 34.73 | 38.03 | 48.27 | 57.87 | 62.03 | a | 50.67 | 42.80 | a | 26.93 | 15.55 | 35.30 | ||||||||||
1956 | 18.87 | 16.97 | 17.52 | 28.30 | 36.43 | a | 45.87 | 49.70 | d | 55.47 | a | 46.43 | 44.27 | a | 26.61 | b | 18.61 | 33.75 | ||||||||
1957 | 7.29 | 10.43 | 17.10 | 30.20 | 39.00 | 46.00 | 53.16 | 55.57 | a | 49.03 | 41.61 | 30.17 | 20.71 | 33.36 | ||||||||||||
1958 | 17.71 | 11.35 | b | 24.29 | 33.57 | 38.42 | 44.67 | 51.90 | 57.26 | 50.90 | 42.87 | 30.97 | 12.23 | a | 34.68 | |||||||||||
1959 | 8.00 | 6.71 | 17.90 | 30.37 | 39.37 | a | 47.47 | 58.26 | 58.00 | c | 50.93 | 37.97 | 21.10 | ----- | z | 34.19 | a | |||||||||
1960 | 14.87 | 14.45 | 11.84 | 31.00 | 37.87 | 45.50 | 51.06 | 56.35 | 49.69 | a | 42.61 | 32.43 | 15.84 | 33.63 | ||||||||||||
1961 | 10.84 | 17.19 | a | 24.32 | 30.30 | 37.19 | 45.67 | 55.42 | 57.68 | 52.50 | 42.16 | 30.70 | 19.84 | 35.32 | ||||||||||||
1962 | 9.48 | 9.89 | 22.00 | 29.37 | 40.65 | 44.55 | a | 51.26 | 53.27 | a | 48.66 | a | 42.81 | 31.67 | 15.80 | a | 33.28 | |||||||||
1963 | 6.55 | 6.57 | 18.52 | b | 28.90 | 36.97 | 44.20 | 57.23 | 54.23 | 48.87 | 49.10 | a | 34.63 | 15.94 | 33.47 | |||||||||||
1964 | 19.48 | 14.83 | 18.68 | 31.97 | 42.39 | 45.23 | 56.13 | 53.71 | 48.57 | 40.42 | 31.10 | 17.58 | 35.01 | |||||||||||||
1965 | 10.90 | 5.89 | 14.29 | 29.90 | 39.97 | a | 45.20 | 50.90 | 52.48 | 45.21 | a | 40.58 | 29.41 | a | 24.39 | 32.43 | ||||||||||
1966 | 9.93 | a | 13.21 | 25.42 | 30.17 | 36.90 | 50.90 | 58.16 | 54.13 | 53.33 | 39.52 | 26.70 | 19.32 | 34.81 | ||||||||||||
1967 | 14.58 | 3.52 | a | 17.39 | 29.70 | 34.39 | 45.67 | 49.55 | 53.16 | 51.43 | 38.97 | 26.80 | 21.23 | 32.20 | ||||||||||||
1968 | 10.57 | a | 7.28 | 23.26 | 32.37 | 37.65 | 44.40 | 51.61 | 54.50 | a | 52.50 | 43.94 | 29.00 | 19.45 | 33.88 | |||||||||||
1969 | 16.42 | 14.32 | 17.20 | a | 31.00 | 38.03 | 44.33 | 53.58 | 59.84 | 50.67 | 38.33 | a | 29.13 | 20.77 | a | 34.47 | ||||||||||
1970 | 11.00 | q | 9.91 | q | 15.65 | 24.90 | 37.84 | 49.93 | 57.61 | 59.13 | 49.13 | 38.26 | 26.47 | 15.61 | 37.45 | b | ||||||||||
1971 | ----- | z | 2.43 | ----- | z | ----- | z | ----- | z | ----- | z | 53.31 | b | 53.47 | a | 53.43 | 47.26 | 25.40 | 17.37 | a | 36.09 | e | ||||
1972 | 5.92 | e | 1.24 | 6.19 | ----- | z | ----- | z | 36.23 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 12.40 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 11.70 | 10.08 | 17.95 | 29.87 | 37.37 | 45.13 | 52.92 | 54.12 | 48.75 | 40.34 | 28.99 | 18.23 | 33.20 | |||||||||||||
S.D. | 4.98 | 5.72 | 5.03 | 2.83 | 2.56 | 3.21 | 3.35 | 3.29 | 2.98 | 3.57 | 3.18 | 4.25 | 1.85 | |||||||||||||
SKEW | -0.60 | -0.14 | -0.67 | -0.54 | 0.12 | 0.63 | 0.44 | -0.20 | -0.46 | 0.17 | -0.23 | -0.24 | -0.95 | |||||||||||||
MAX | 19.74 | 22.21 | 25.52 | 34.73 | 42.87 | 55.66 | 61.87 | 62.03 | 53.76 | 49.10 | 35.67 | 25.93 | 36.11 | |||||||||||||
MIN | -2.62 | -2.50 | 5.29 | 23.52 | 31.70 | 36.23 | 46.65 | 47.10 | 40.73 | 31.90 | 21.10 | 8.24 | 27.74 | |||||||||||||
YRS | 43 | 46 | 47 | 46 | 49 | 51 | 48 | 51 | 50 | 51 | 51 | 45 | 31 |