YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1901 | ----- | z | 31.69 | a | 34.50 | 42.43 | c | 56.17 | e | 61.48 | 73.10 | b | 70.17 | b | ----- | z | ----- | z | 43.31 | a | 28.42 | a | 49.03 | c | ||
1902 | 28.62 | b | 33.31 | b | 31.18 | c | 45.10 | a | 48.08 | s | 65.34 | e | 66.71 | b | 66.23 | 58.90 | 50.28 | b | 35.15 | 26.83 | b | 46.15 | a | |||
1903 | 24.92 | 17.21 | 34.45 | 42.86 | b | 50.35 | a | 61.04 | b | 67.77 | c | 68.77 | 54.79 | m | ----- | z | ----- | z | ----- | z | 45.92 | d | ||||
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.50 | 65.44 | 60.33 | c | 45.44 | g | 38.82 | h | 27.33 | b | 54.15 | h | ||
1905 | 25.81 | 28.24 | c | 37.81 | d | 44.23 | b | 49.07 | j | 62.26 | i | 65.97 | 67.39 | d | 59.07 | b | 43.69 | e | 37.48 | a | 21.83 | h | 45.52 | c | ||
1906 | 25.86 | c | 32.50 | m | ----- | z | ----- | z | ----- | z | 60.28 | l | 66.37 | e | 64.82 | 56.68 | b | 45.74 | b | 36.68 | k | 33.71 | n | 51.89 | g | |
1907 | 28.38 | c | 38.07 | g | 40.26 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.38 | k |
1908 | ----- | z | ----- | z | ----- | z | 45.88 | a | 47.63 | a | 58.22 | c | 68.72 | b | 64.48 | b | 57.70 | 41.14 | c | 35.52 | g | 25.14 | b | 51.12 | d | |
1909 | 29.85 | e | 26.24 | a | 34.02 | f | 40.98 | b | 50.02 | b | 63.05 | b | 69.03 | a | 66.39 | c | 57.78 | c | 49.48 | c | 38.04 | d | 16.79 | b | 46.15 | a |
1910 | 24.76 | b | 25.84 | 43.89 | 47.38 | a | 54.56 | 64.32 | e | 69.32 | 67.06 | d | 61.67 | d | 48.17 | a | 44.34 | n | ----- | z | 50.70 | b | ||||
1911 | ----- | z | 29.25 | d | 39.98 | 44.83 | d | 54.15 | a | 61.67 | d | 64.38 | a | ----- | z | ----- | z | 46.25 | o | 29.08 | l | 22.54 | d | 45.26 | e | |
1912 | 26.29 | 29.41 | 34.18 | a | 39.98 | c | 50.30 | d | 60.12 | j | 64.19 | d | 64.00 | f | 51.65 | j | 45.83 | j | ----- | z | 19.02 | a | 37.62 | e | ||
1913 | 20.42 | a | 26.19 | b | 31.28 | a | 45.02 | c | ----- | z | ----- | z | 64.67 | k | 66.73 | g | 54.96 | c | 44.88 | k | 38.50 | e | 22.50 | a | 34.12 | e |
1914 | 27.60 | b | 26.30 | 37.27 | 45.77 | 54.47 | 60.09 | a | 63.73 | c | 66.50 | a | 61.22 | e | ----- | z | 37.88 | v | 23.52 | 46.65 | b | |||||
1915 | 22.79 | c | 28.13 | i | 36.73 | g | 47.88 | a | 46.46 | g | 59.08 | r | 71.66 | i | 70.77 | a | 61.50 | o | 49.31 | 36.10 | 27.32 | 42.36 | f | |||
1916 | 24.84 | 31.17 | 38.45 | 44.70 | 51.88 | a | 58.98 | d | 66.21 | 62.58 | 51.98 | i | ----- | z | ----- | z | 17.35 | k | 47.35 | d | ||||||
1917 | 17.91 | d | 24.57 | 21.83 | d | ----- | z | ----- | z | 58.53 | 65.33 | e | 60.97 | 55.58 | 49.57 | j | 44.09 | b | 34.08 | m | 43.60 | d | ||||
1918 | 19.77 | g | 27.89 | 39.58 | 40.66 | e | 50.29 | e | 68.12 | b | 67.94 | o | 64.98 | 59.17 | 49.00 | 30.70 | c | 24.14 | c | 45.45 | b | |||||
1919 | 21.73 | 23.78 | c | 32.90 | 47.85 | 55.92 | e | 65.04 | c | 65.39 | v | 67.40 | 64.15 | c | 40.67 | d | ----- | z | 22.88 | n | 46.60 | c | ||||
1920 | 26.46 | c | 28.12 | 30.08 | a | 35.15 | ----- | z | 59.85 | 67.17 | e | 64.30 | k | 55.60 | ----- | z | 34.60 | 22.67 | a | 39.97 | c | |||||
1921 | 28.13 | 30.62 | b | 41.18 | f | 44.38 | b | 60.08 | a | 67.98 | a | 68.75 | i | ----- | z | ----- | z | 51.54 | h | 37.80 | 32.43 | a | 43.06 | e | ||
1922 | 20.65 | 26.50 | 33.64 | b | 40.18 | 52.42 | f | ----- | z | ----- | z | 67.34 | o | 64.10 | e | 49.00 | m | 35.18 | 28.74 | 35.57 | e | |||||
1923 | 30.90 | 26.42 | c | 31.70 | i | 44.00 | g | 53.98 | 60.28 | a | 68.03 | 64.18 | ----- | z | ----- | z | ----- | z | ----- | z | 50.63 | f | ||||
1924 | 14.95 | a | 30.00 | b | 28.03 | b | ----- | z | ----- | z | 73.00 | y | 71.08 | 68.13 | 55.80 | 49.15 | a | 35.29 | i | 20.12 | e | 42.16 | d | |||
1925 | 21.05 | a | 29.41 | a | ----- | z | ----- | z | 57.00 | 56.76 | e | 70.47 | 65.66 | 56.78 | 46.44 | 33.50 | 29.31 | 46.64 | b | |||||||
1926 | 24.50 | p | 30.20 | c | 35.39 | q | 44.34 | a | 50.07 | a | ----- | z | ----- | z | ----- | z | 59.57 | i | 51.06 | 38.88 | 25.42 | a | 40.00 | f | ||
1927 | 31.05 | k | 29.50 | 34.56 | 44.27 | 55.21 | 62.83 | 69.89 | 66.37 | a | 55.73 | 49.77 | 39.36 | a | ----- | z | 50.75 | b | ||||||||
1928 | ----- | z | ----- | z | ----- | z | ----- | z | 57.25 | a | 61.56 | c | 69.27 | 67.34 | b | 61.41 | h | 50.96 | g | 35.40 | f | 33.98 | d | 57.88 | g | |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.79 | a | 48.73 | c | 31.68 | 31.48 | a | 42.42 | h | |
1930 | 19.28 | b | 31.19 | b | 35.39 | 50.00 | a | 51.11 | d | 64.58 | 69.87 | d | 67.77 | a | 58.72 | 46.45 | 32.45 | 22.45 | a | 45.77 | ||||||
1931 | 24.69 | 33.43 | 34.06 | 46.68 | 50.21 | 66.68 | 73.65 | 70.44 | 62.43 | 49.84 | 33.48 | 20.16 | 47.15 | |||||||||||||
1932 | 18.15 | 30.74 | 33.28 | b | 46.57 | 54.37 | 61.67 | 69.89 | 67.76 | 59.62 | 47.81 | 38.12 | a | 18.98 | 45.58 | |||||||||||
1933 | 21.58 | 18.25 | 36.15 | 39.55 | 47.21 | 66.28 | 68.66 | c | 68.68 | 64.32 | 52.74 | 37.93 | 33.03 | a | 46.20 | |||||||||||
1934 | 29.82 | 37.45 | 44.76 | 51.23 | 62.12 | a | 64.27 | 75.32 | 71.82 | 60.36 | a | 52.02 | 37.57 | 27.94 | 51.22 | |||||||||||
1935 | 28.55 | a | 30.81 | a | 34.14 | c | 43.12 | 49.13 | 63.75 | 70.08 | 68.63 | 61.45 | 47.02 | 33.73 | 26.35 | 46.40 | ||||||||||
1936 | 23.58 | 27.90 | 37.60 | 45.86 | a | 52.78 | b | 65.02 | b | 68.81 | 65.73 | 57.86 | a | 46.85 | a | 33.53 | 24.37 | a | 45.82 | |||||||
1937 | 11.13 | 22.82 | 32.11 | 40.72 | 55.35 | 63.87 | 70.47 | 71.76 | ----- | z | ----- | z | ----- | z | 27.07 | a | 43.92 | c | ||||||||
1938 | 26.03 | 26.11 | 36.32 | ----- | z | 50.39 | 60.85 | 66.05 | 79.74 | ----- | z | ----- | z | 20.77 | s | 27.05 | a | 46.57 | d | |||||||
1939 | 18.02 | 13.37 | a | 32.34 | 44.77 | ----- | z | ----- | z | 68.90 | 66.52 | 59.48 | a | ----- | z | 37.85 | 29.61 | 41.21 | c | |||||||
1940 | 23.77 | 28.26 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.21 | 58.50 | a | 49.38 | a | 35.73 | b | 33.68 | i | 44.14 | f | |||
1941 | 27.79 | 33.20 | a | 35.78 | b | 40.67 | a | 52.62 | a | 59.50 | 67.73 | 66.61 | 55.53 | a | 46.02 | a | 37.55 | 30.31 | b | 46.11 | ||||||
1942 | 26.50 | 23.89 | a | 31.13 | 46.02 | 51.32 | 63.10 | 70.85 | 68.29 | 61.24 | a | 46.26 | 34.59 | b | 28.32 | c | 45.96 | |||||||||
1943 | 28.63 | 33.41 | a | 35.95 | 52.05 | 54.21 | 61.63 | 71.31 | 67.89 | 63.08 | 52.05 | 38.10 | 28.13 | 48.87 | ||||||||||||
1944 | 22.92 | a | 26.97 | 31.20 | c | 40.37 | 53.35 | a | 58.68 | 69.21 | 69.39 | 62.97 | 54.43 | b | 36.67 | 27.90 | 46.17 | |||||||||
1945 | 27.92 | 33.62 | x | 34.58 | 39.33 | 53.13 | 57.65 | 69.10 | 68.09 | d | 58.22 | 50.22 | b | 34.65 | 24.69 | 47.05 | a | |||||||||
1946 | 21.76 | 26.62 | 40.05 | a | 52.09 | b | 51.67 | a | 61.50 | 69.29 | 66.03 | b | 58.53 | ----- | z | 35.22 | a | 26.93 | c | 46.34 | a | |||||
1947 | 20.96 | c | 32.86 | j | 37.30 | a | ----- | z | 56.35 | 56.03 | l | 70.61 | i | 67.24 | 63.84 | n | 53.02 | 42.93 | w | 24.78 | v | 46.98 | g | |||
1948 | 23.68 | a | 28.44 | c | 28.60 | a | 44.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.18 | h | |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.90 | i | 45.03 | 42.03 | 27.50 | 38.19 | i | |||
1950 | 24.00 | 29.91 | 35.37 | a | 45.22 | 51.95 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.62 | h | |||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.85 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.85 | k | |
1952 | 25.69 | e | 23.69 | 26.95 | 43.85 | 52.77 | 61.83 | 68.02 | 67.71 | 61.53 | 53.03 | 30.90 | 24.37 | 45.03 | ||||||||||||
1953 | 28.77 | 26.29 | 35.44 | 41.17 | 47.63 | 64.80 | 70.32 | a | 64.81 | 61.32 | 46.66 | 36.05 | 20.92 | 45.35 | ||||||||||||
1954 | 27.10 | a | 34.61 | 31.66 | 48.25 | 54.42 | 61.18 | 69.79 | b | 65.26 | 57.33 | 47.00 | a | 36.03 | 23.13 | 46.31 | ||||||||||
1955 | 21.08 | 18.85 | b | 32.13 | a | 41.78 | 51.95 | b | 60.48 | 69.66 | 68.90 | 62.22 | 55.62 | k | 31.87 | d | 31.52 | 44.59 | a | |||||||
1956 | 32.89 | 23.70 | f | 37.95 | 44.41 | a | 56.44 | 67.42 | 69.71 | 66.03 | 64.75 | 50.18 | 30.85 | 24.35 | 49.54 | a | ||||||||||
1957 | 25.92 | 34.71 | 36.69 | 41.53 | 49.08 | 62.02 | a | 69.24 | 68.31 | 59.55 | 46.97 | 30.53 | 28.60 | a | 46.10 | |||||||||||
1958 | 25.98 | 33.41 | a | 31.29 | e | ----- | z | 59.96 | h | 63.16 | h | 70.00 | d | 68.31 | e | 59.30 | e | 47.43 | i | 36.21 | k | 35.77 | g | 48.05 | f | |
1959 | ----- | z | 28.60 | c | 38.12 | e | 48.98 | b | 57.93 | c | 70.67 | d | 70.60 | f | 67.89 | d | 56.44 | e | 46.65 | e | 35.38 | d | 25.78 | d | 47.64 | b |
1960 | 21.95 | b | 19.79 | c | 39.87 | d | 46.98 | d | 55.30 | d | 66.26 | c | ----- | z | ----- | z | 59.22 | u | 46.76 | d | 41.46 | g | 31.92 | g | 42.41 | e |
1961 | ----- | z | 32.36 | j | 36.11 | c | 46.94 | f | 53.05 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.11 | k |
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 | 38.10 | 26.69 | 32.40 | j | ||
1964 | 20.17 | h | ----- | z | 30.78 | v | 40.64 | b | 53.71 | 60.56 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.64 | i | |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | 49.71 | g | 58.53 | a | 66.78 | a | 66.24 | 54.29 | a | 51.79 | e | 40.37 | 27.16 | 52.17 | e | |||
1966 | 23.70 | d | 21.61 | 37.35 | 43.88 | d | 56.93 | c | 62.58 | e | 71.04 | g | 68.96 | h | 61.41 | m | 48.65 | n | 40.71 | f | ----- | z | 41.01 | f | ||
1967 | 26.15 | d | 31.78 | a | 41.46 | f | 40.48 | h | 51.92 | ----- | z | ----- | z | 69.00 | p | 61.35 | 50.52 | c | 39.95 | 20.27 | 40.28 | e | ||||
1968 | 22.32 | 32.98 | 37.87 | 39.87 | 50.92 | 64.12 | 69.24 | 63.53 | 58.03 | ----- | z | 34.00 | 23.68 | 45.14 | a | |||||||||||
1969 | 29.92 | 27.27 | 29.16 | 46.55 | a | 57.19 | 60.90 | 70.69 | 71.13 | 62.43 | 42.35 | 33.83 | a | 29.95 | 46.78 | |||||||||||
1970 | 25.79 | 35.45 | h | 31.68 | k | 36.14 | b | 53.44 | d | 64.52 | i | 69.42 | e | 69.14 | f | 56.03 | 43.45 | a | 37.27 | 29.12 | b | 43.83 | d | |||
1971 | 27.21 | b | 30.70 | f | 36.75 | e | 45.60 | a | 51.89 | 64.90 | f | 71.81 | 69.07 | b | 54.22 | e | 46.76 | h | 34.10 | a | 23.18 | c | 45.98 | c | ||
1972 | 27.87 | a | 34.89 | b | 44.38 | e | 46.62 | a | 55.53 | 64.54 | d | 71.84 | 68.73 | a | 60.66 | a | 48.53 | 30.84 | b | ----- | z | 50.40 | a | |||
1973 | 20.40 | e | 28.65 | b | ----- | z | 40.35 | m | 52.60 | e | 60.87 | c | 69.14 | b | 68.14 | c | 57.88 | e | 48.65 | a | 36.81 | f | 26.35 | g | 50.79 | d |
1974 | 19.71 | e | 24.12 | b | 39.68 | c | 42.28 | e | 56.38 | c | 66.98 | 67.54 | e | 64.50 | 58.34 | b | 50.00 | e | 35.25 | b | 23.87 | 45.72 | ||||
1975 | 23.53 | 27.21 | 33.81 | 38.63 | 48.98 | e | 57.90 | i | 67.77 | 66.26 | 58.35 | 48.47 | b | 33.82 | 26.65 | 43.04 | a | |||||||||
1976 | 21.97 | 33.48 | 31.18 | 44.12 | 54.02 | 62.07 | 70.48 | 65.90 | 59.42 | 44.60 | 37.50 | 28.18 | 46.08 | |||||||||||||
1977 | 22.66 | 31.82 | 32.09 | d | 47.73 | 51.66 | 67.18 | 68.37 | 67.90 | 60.57 | 49.02 | a | 35.45 | 29.90 | 47.03 | |||||||||||
1978 | 25.59 | d | 25.19 | j | 38.55 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.59 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.37 | 28.08 | 34.88 | 44.13 | 53.25 | 62.69 | 68.93 | 67.43 | 59.23 | 48.18 | 35.91 | 26.03 | 46.51 | |||||||||||||
S.D. | 4.01 | 4.74 | 4.28 | 3.63 | 3.14 | 3.07 | 2.37 | 2.74 | 2.72 | 3.09 | 3.16 | 3.78 | 1.41 | |||||||||||||
SKEW | -0.65 | -0.76 | -0.14 | -0.03 | 0.31 | 0.35 | -0.14 | 1.41 | 0.14 | -0.37 | 0.35 | -0.23 | 2.28 | |||||||||||||
MAX | 32.89 | 37.45 | 44.76 | 52.09 | 62.12 | 70.67 | 75.32 | 79.74 | 64.75 | 54.43 | 44.09 | 33.98 | 51.22 | |||||||||||||
MIN | 11.13 | 13.37 | 21.83 | 35.15 | 47.21 | 56.76 | 63.50 | 60.97 | 54.22 | 40.67 | 30.53 | 16.79 | 45.03 | |||||||||||||
YRS | 61 | 58 | 55 | 56 | 54 | 51 | 55 | 56 | 53 | 46 | 50 | 54 | 19 |