YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1899 | ----- | z | ----- | z | ----- | z | ----- | z | 46.92 | g | 57.15 | 61.02 | 64.18 | 52.35 | 48.52 | 41.15 | 24.47 | b | 49.83 | e | ||||||
1900 | 23.24 | 9.96 | b | 18.24 | 41.78 | 49.53 | 57.23 | 61.48 | 67.11 | 58.38 | 56.18 | 32.37 | 25.85 | a | 41.78 | |||||||||||
1901 | 19.70 | a | 14.05 | 22.60 | f | ----- | z | 48.08 | 57.37 | 62.71 | b | 64.52 | b | 57.05 | b | 47.68 | 32.85 | 22.53 | 42.65 | b | ||||||
1902 | 20.62 | c | 20.69 | t | 33.57 | a | 38.10 | 47.12 | a | 52.42 | 63.82 | 62.02 | 54.93 | 45.52 | 36.79 | a | 23.23 | e | 43.47 | a | ||||||
1903 | 18.14 | f | 17.90 | b | 29.67 | a | 37.80 | 47.73 | 51.95 | a | 60.65 | 57.60 | 56.30 | j | 47.23 | 45.35 | t | ----- | z | 43.81 | d | |||||
1904 | ----- | z | ----- | z | ----- | z | 32.06 | l | 45.56 | d | 53.89 | b | 59.45 | b | 60.69 | 52.43 | 43.61 | c | 36.87 | 21.40 | a | 46.74 | d | |||
1905 | 16.55 | 12.64 | 24.10 | b | 36.10 | 44.71 | 53.39 | b | 58.52 | 61.52 | 59.23 | h | 45.05 | a | 33.88 | 27.44 | 37.63 | a | ||||||||
1906 | 25.87 | 17.26 | c | 21.55 | 41.73 | 44.00 | 53.87 | 59.71 | 62.45 | 61.33 | 46.66 | 36.41 | a | 21.98 | i | 42.80 | a | |||||||||
1907 | 13.55 | c | 14.52 | 26.21 | 29.74 | a | 38.42 | a | 55.65 | 62.10 | 60.08 | 53.03 | a | 43.53 | 34.73 | 27.10 | k | 39.23 | a | |||||||
1908 | 22.33 | j | 19.98 | 25.78 | a | 37.64 | a | 47.81 | b | 57.95 | 62.69 | 63.30 | a | 62.95 | a | 49.56 | 37.67 | a | 22.43 | j | 46.53 | b | ||||
1909 | ----- | z | 18.17 | b | 26.45 | 33.72 | 42.89 | 56.07 | 61.50 | a | 63.83 | a | 55.26 | a | 45.16 | 39.60 | a | 24.10 | a | 42.43 | a | |||||
1910 | 20.52 | a | 16.30 | a | 35.90 | a | 41.03 | 44.19 | 57.87 | 64.02 | 62.11 | 55.74 | a | 49.60 | a | 31.97 | a | 22.55 | b | 41.82 | ||||||
1911 | 17.89 | 23.74 | a | 30.66 | b | 36.35 | d | 53.78 | a | 56.17 | 63.38 | a | 60.92 | 54.10 | a | 44.74 | 30.60 | 29.95 | 41.86 | |||||||
1912 | 3.74 | d | 11.00 | a | 18.05 | 36.43 | 47.70 | c | 55.88 | 61.88 | a | 55.60 | a | 56.57 | a | 50.10 | a | 36.32 | 23.69 | g | 39.39 | a | ||||
1913 | ----- | z | ----- | z | ----- | z | 41.10 | 44.90 | 57.33 | 59.65 | a | 59.93 | a | 55.55 | 45.50 | a | 40.14 | a | 31.12 | a | 48.36 | c | ||||
1914 | 22.68 | c | 11.62 | b | 23.66 | c | 33.95 | 52.23 | c | 55.25 | 61.04 | c | 60.08 | a | 58.63 | 51.84 | 36.29 | a | 22.63 | a | 40.83 | |||||
1915 | 18.06 | 22.68 | 25.71 | b | 42.91 | a | 43.37 | 52.32 | 57.22 | a | 55.02 | 56.22 | 46.77 | a | 36.48 | b | 24.38 | a | 40.09 | |||||||
1916 | 17.45 | c | 13.58 | c | 17.82 | c | 36.65 | 46.26 | 51.08 | 65.46 | d | 66.50 | 50.52 | 44.24 | 32.53 | 20.09 | c | 38.52 | ||||||||
1917 | 14.62 | b | 5.63 | a | 22.11 | 31.65 | 38.62 | a | 48.97 | 58.76 | 58.34 | 55.93 | 37.95 | 35.08 | 14.16 | b | 35.15 | |||||||||
1918 | 8.81 | b | 8.29 | b | 28.32 | a | 35.05 | 47.48 | c | 53.58 | 61.23 | 64.14 | b | 49.23 | 47.45 | a | 36.82 | 29.83 | a | 39.19 | ||||||
1919 | 25.00 | 23.55 | 27.80 | a | 37.71 | d | 47.44 | 58.58 | 67.73 | 62.27 | 55.52 | a | 44.42 | a | 31.13 | c | 17.46 | f | 43.74 | a | ||||||
1920 | 15.07 | p | 13.85 | e | 25.81 | d | 32.12 | e | 47.32 | 52.26 | a | 59.70 | h | 65.02 | 57.84 | a | 53.61 | 32.68 | 27.02 | b | 40.75 | b | ||||
1921 | 23.29 | g | ----- | z | 28.54 | e | 41.66 | a | 49.55 | a | 64.02 | b | 71.09 | d | 64.66 | 60.52 | a | 49.10 | b | 29.50 | b | 24.35 | e | 48.30 | b | |
1922 | 17.43 | a | 15.79 | 25.79 | g | 37.40 | d | 55.39 | c | 59.00 | a | 65.02 | c | 65.93 | a | 59.53 | 44.29 | b | 36.79 | a | 18.86 | c | 43.22 | a | ||
1923 | 17.31 | 10.12 | b | 13.95 | b | 32.05 | 43.65 | a | 55.95 | b | 64.37 | 61.24 | 55.28 | 44.65 | a | 37.00 | a | 29.83 | b | 38.78 | ||||||
1924 | 9.83 | b | 19.04 | b | 23.82 | a | 33.61 | b | 38.03 | 51.80 | 57.52 | 57.84 | b | 51.27 | h | 47.32 | 30.84 | e | 13.63 | a | 34.84 | a | ||||
1925 | 15.74 | 16.00 | a | 24.10 | a | 36.13 | c | 41.81 | 51.66 | b | 59.40 | 62.43 | b | 55.02 | 36.31 | b | 30.12 | a | 20.47 | a | 37.43 | |||||
1926 | ----- | z | ----- | z | 17.55 | 30.28 | a | 42.30 | a | 47.36 | a | 53.31 | 60.57 | b | 48.67 | 39.72 | b | 27.03 | a | 18.52 | a | 38.53 | b | |||
1927 | 13.17 | a | 16.52 | 27.13 | a | 35.07 | 39.39 | 53.53 | a | ----- | z | 56.27 | a | 56.91 | a | ----- | z | ----- | z | ----- | z | 37.25 | d | |||
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 | 22.47 | l | 31.87 | l | ----- | z | 48.77 | k | 64.20 | g | ----- | z | ----- | z | 55.21 | a | ----- | z | 34.41 | b | 24.27 | c | 37.96 | i |
1950 | 16.63 | 21.73 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.45 | 53.77 | 48.56 | 31.55 | a | 22.15 | a | 38.19 | f | ||||
1951 | 19.45 | 20.00 | 24.56 | 37.03 | 52.42 | 52.36 | b | 63.05 | 59.61 | 52.95 | a | 45.02 | 29.36 | a | 22.55 | 39.86 | ||||||||||
1952 | 20.31 | 24.60 | 26.23 | 42.66 | a | 46.60 | 57.82 | 64.03 | a | 64.44 | 60.08 | 43.35 | a | 36.73 | 29.24 | 43.01 | ||||||||||
1953 | 22.50 | 21.30 | 29.34 | 35.67 | 46.92 | a | 56.35 | 64.21 | 66.79 | 57.68 | 52.94 | 40.12 | 26.58 | 43.37 | ||||||||||||
1954 | 17.35 | 29.02 | 26.73 | 37.42 | 41.90 | a | 57.29 | a | 61.93 | a | 63.15 | 54.08 | 45.79 | 38.17 | 27.32 | 41.68 | ||||||||||
1955 | 21.03 | a | 20.66 | 23.18 | 43.73 | 50.98 | 59.17 | 67.85 | 69.12 | a | 58.17 | 49.53 | a | 32.30 | 21.87 | 43.13 | ||||||||||
1956 | 24.05 | 22.55 | 24.98 | 34.97 | 45.38 | b | 57.10 | 58.85 | g | 62.50 | a | 53.53 | 53.82 | a | 33.18 | b | 24.65 | 39.70 | a | |||||||
1957 | 13.71 | 18.93 | 24.95 | 38.63 | 47.61 | 55.90 | 62.89 | 63.58 | a | 56.15 | 48.26 | 35.15 | 26.23 | 41.00 | ||||||||||||
1958 | 23.37 | 16.60 | c | 29.18 | 41.37 | 47.48 | b | 54.78 | 60.76 | 64.77 | 58.35 | 48.60 | 36.63 | 17.93 | b | 41.65 | ||||||||||
1959 | 13.42 | 14.62 | 26.29 | 37.55 | 50.77 | a | 59.61 | c | 67.23 | 65.75 | c | 58.80 | 43.47 | 27.02 | ----- | z | 42.23 | a | ||||||||
1960 | 20.76 | 21.09 | 20.85 | 37.90 | 46.89 | 55.29 | a | 61.77 | 64.63 | 57.84 | a | 48.56 | 37.32 | 21.48 | 41.20 | |||||||||||
1961 | 17.24 | 24.00 | a | 30.52 | 37.25 | 47.13 | 55.78 | 63.03 | 66.63 | 59.72 | 49.13 | 36.77 | 24.68 | 42.66 | ||||||||||||
1962 | 15.90 | 15.66 | 27.97 | 35.95 | 51.42 | 55.10 | d | 60.37 | 61.58 | a | 55.26 | a | 49.38 | a | 37.33 | 22.60 | b | 40.71 | ||||||||
1963 | 12.29 | 13.46 | a | 28.05 | b | 37.95 | 47.40 | 55.08 | 65.71 | 61.74 | 56.48 | 57.12 | a | 40.12 | 21.08 | 41.37 | ||||||||||
1964 | 25.50 | 22.90 | 25.18 | 40.12 | 52.55 | 56.88 | 65.16 | 60.50 | 55.65 | 47.27 | 37.22 | 22.89 | 42.65 | |||||||||||||
1965 | 19.13 | 14.43 | 21.68 | 37.15 | 51.05 | a | 56.39 | c | 59.90 | 60.06 | 51.84 | a | 47.13 | 34.98 | a | 29.47 | 40.27 | |||||||||
1966 | 16.63 | a | 20.29 | 31.90 | 36.13 | 45.97 | 61.22 | 66.95 | 61.65 | a | 59.98 | 46.84 | b | 33.32 | 24.63 | 42.13 | ||||||||||
1967 | 21.34 | 14.67 | a | 27.55 | 40.18 | 46.00 | 56.62 | 61.02 | 62.58 | 59.37 | 45.69 | 32.38 | 26.87 | 41.19 | ||||||||||||
1968 | 18.34 | b | 15.83 | 32.32 | 40.88 | 47.69 | 54.37 | 63.85 | 63.63 | a | 59.20 | 51.31 | 34.25 | 25.03 | 42.23 | |||||||||||
1969 | 21.50 | a | 21.71 | 25.43 | a | 40.43 | 49.10 | 53.62 | 63.08 | a | 69.35 | 59.48 | 44.13 | a | 34.67 | 25.32 | a | 42.32 | ||||||||
1970 | 16.64 | q | 19.40 | r | 23.39 | 35.83 | 46.74 | 60.60 | 67.61 | 68.05 | 56.90 | 45.84 | 31.53 | 20.29 | 45.68 | b | ||||||||||
1971 | ----- | z | 9.20 | ----- | z | ----- | z | ----- | z | ----- | z | 60.43 | c | 61.57 | d | 60.08 | 53.44 | 31.48 | g | 21.02 | a | 44.29 | f | |||
1972 | 11.72 | f | 7.52 | 13.61 | ----- | z | ----- | z | 46.93 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 22.69 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 18.06 | 16.85 | 25.34 | 37.32 | 46.69 | 55.36 | 62.46 | 62.44 | 56.33 | 47.23 | 34.66 | 23.74 | 40.96 | |||||||||||||
S.D. | 4.71 | 5.19 | 4.75 | 3.36 | 3.91 | 3.29 | 3.24 | 3.32 | 3.09 | 4.06 | 3.36 | 3.91 | 1.87 | |||||||||||||
SKEW | -0.71 | -0.03 | -0.43 | -0.18 | -0.23 | -0.24 | 0.07 | -0.15 | -0.36 | -0.00 | -0.26 | -0.36 | -1.32 | |||||||||||||
MAX | 25.87 | 29.02 | 35.90 | 43.73 | 55.39 | 64.02 | 71.09 | 69.35 | 62.95 | 57.12 | 41.15 | 31.12 | 43.37 | |||||||||||||
MIN | 3.74 | 5.63 | 13.61 | 29.74 | 38.03 | 46.93 | 53.31 | 55.02 | 48.67 | 36.31 | 27.02 | 13.63 | 35.15 | |||||||||||||
YRS | 40 | 44 | 45 | 46 | 48 | 50 | 47 | 51 | 49 | 50 | 49 | 44 | 27 |