YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1911 | ----- | z | ----- | z | 43.21 | 49.60 | a | 57.97 | 69.12 | a | 77.00 | a | 76.24 | 66.10 | 53.31 | 40.95 | b | 30.07 | b | 56.36 | b | |||||
1912 | 31.90 | b | 36.65 | c | 40.95 | c | 47.04 | b | 57.71 | b | 70.28 | a | 73.73 | 73.78 | a | 59.40 | d | 50.39 | 42.41 | a | 32.06 | 51.36 | ||||
1913 | ----- | z | 30.28 | a | 37.42 | 51.08 | 60.52 | 68.64 | b | 74.05 | b | 76.63 | 66.45 | 51.21 | 44.43 | 30.60 | 53.76 | a | ||||||||
1914 | 31.37 | 33.66 | 44.13 | ----- | z | 63.45 | c | 67.05 | 76.79 | 78.08 | 64.67 | 55.87 | 44.47 | 30.43 | a | 53.63 | a | |||||||||
1915 | 28.77 | a | 35.69 | a | 44.58 | 57.41 | a | 58.40 | a | 67.33 | 76.13 | 78.32 | a | 62.88 | n | 55.82 | 42.75 | 35.25 | c | 52.77 | a | |||||
1916 | 27.15 | a | 31.57 | 40.84 | 49.97 | 57.34 | 68.05 | a | 76.79 | 76.29 | c | 67.80 | 50.45 | 36.59 | a | 29.72 | a | 51.05 | ||||||||
1917 | 21.90 | 29.31 | a | 33.18 | a | 46.32 | 57.41 | b | 69.20 | 81.18 | 76.97 | 67.12 | a | 56.34 | 40.90 | a | 36.03 | 51.32 | ||||||||
1918 | 29.54 | d | 31.88 | 44.03 | b | 49.38 | b | 57.40 | 76.57 | b | 77.98 | 73.55 | 68.28 | 58.76 | 41.57 | a | 31.65 | a | 53.38 | |||||||
1919 | 28.03 | 34.68 | 42.15 | 53.28 | 63.83 | b | 74.45 | a | ----- | z | 77.61 | d | 67.27 | 46.24 | b | 37.13 | 22.89 | 49.78 | a | |||||||
1920 | 25.92 | 33.33 | 37.87 | 41.46 | g | 57.74 | 66.14 | a | 77.37 | a | 76.24 | 65.95 | a | 49.58 | 40.21 | b | 32.53 | 51.17 | a | |||||||
1921 | 31.89 | 33.93 | 43.71 | 46.21 | a | 60.03 | 71.92 | 77.46 | f | 71.85 | 61.80 | 57.58 | 43.87 | 32.90 | a | 50.52 | a | |||||||||
1922 | 21.10 | 28.46 | a | ----- | z | 44.12 | e | 60.18 | 70.03 | a | 79.84 | b | 79.44 | e | 70.69 | a | 54.76 | 39.98 | a | 33.47 | a | 52.92 | a | |||
1923 | 34.05 | 26.70 | a | 37.65 | a | 49.14 | b | 60.34 | 64.72 | 78.52 | 75.98 | c | 66.64 | b | 49.17 | j | 42.58 | d | 30.53 | p | 53.63 | b | ||||
1924 | ----- | z | ----- | z | 37.73 | 50.27 | 65.28 | a | 71.83 | 78.83 | a | 76.34 | 66.19 | a | 53.68 | 41.48 | a | 27.23 | c | 56.89 | b | |||||
1925 | 27.55 | 38.14 | 44.27 | 53.02 | 65.02 | 67.98 | 81.52 | 75.69 | 69.83 | a | ----- | z | 43.12 | 39.81 | b | 55.09 | a | |||||||||
1926 | 36.84 | c | 41.25 | b | 46.40 | 57.72 | 64.04 | e | 77.65 | c | 82.62 | j | 79.82 | 67.34 | b | 58.94 | 50.72 | 37.40 | a | 56.19 | a | |||||
1927 | 34.69 | 39.77 | 44.45 | 52.18 | 58.87 | a | 70.02 | 78.90 | 74.50 | 64.14 | i | 54.98 | c | 46.98 | b | 31.48 | b | 53.35 | a | |||||||
1928 | 29.02 | 34.36 | a | 44.40 | 48.52 | 65.95 | 69.17 | f | 78.94 | 76.00 | a | 68.52 | a | 59.08 | s | 41.83 | 27.32 | 51.49 | b | |||||||
1929 | 26.27 | t | 29.89 | s | 39.93 | d | 46.60 | 58.89 | c | 68.85 | c | 79.77 | c | ----- | z | 65.79 | a | 58.67 | b | ----- | z | ----- | z | 59.79 | e | |
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 | ----- | 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 | 30.38 | n | ----- | z |
1969 | 32.65 | d | 33.66 | 38.55 | c | 50.17 | 64.89 | d | 67.63 | 76.47 | 80.71 | 69.50 | a | 49.69 | 40.92 | 33.11 | 53.16 | |||||||||
1970 | 32.92 | a | 38.25 | 41.38 | a | 45.27 | 58.84 | b | 70.20 | 77.60 | 79.89 | 62.98 | 50.00 | a | 42.90 | 31.95 | a | 52.68 | ||||||||
1971 | 31.20 | c | 35.65 | b | 40.29 | 49.17 | 58.63 | 69.50 | c | 79.53 | 80.41 | d | 63.62 | d | 50.63 | a | 38.32 | 29.18 | c | 52.18 | ||||||
1972 | 31.63 | e | 33.71 | a | 46.26 | 51.28 | 63.81 | 72.70 | 79.40 | b | 78.61 | 65.72 | 59.62 | r | 41.27 | b | 25.42 | a | 53.62 | a | ||||||
1973 | 25.50 | a | 32.50 | 40.72 | a | 48.24 | c | 61.16 | 70.22 | 77.79 | 78.12 | b | 64.22 | 56.22 | a | ----- | z | 34.61 | 53.57 | a | ||||||
1974 | 27.16 | ----- | z | 43.50 | o | 48.53 | 61.17 | a | 70.26 | i | 78.85 | 76.52 | a | 68.87 | 59.00 | i | 45.90 | 34.02 | 55.13 | d | ||||||
1975 | 27.50 | 33.42 | b | 39.96 | s | 47.86 | w | 54.31 | e | 63.47 | a | 78.04 | f | 74.63 | 68.16 | b | 59.34 | o | 31.85 | t | 29.19 | e | 50.10 | e | ||
1976 | 28.43 | a | 33.53 | 37.07 | d | 48.77 | 61.78 | b | 66.78 | 78.17 | m | 72.91 | i | 66.88 | ----- | z | 42.95 | 29.89 | 46.23 | c | ||||||
1977 | 26.69 | 34.44 | a | 37.65 | a | 53.98 | 55.98 | a | 75.22 | a | 78.03 | 76.23 | c | 67.12 | m | 57.96 | c | ----- | z | 37.74 | 53.39 | b | ||||
1978 | 35.37 | 37.63 | b | 45.00 | 48.83 | 56.21 | 68.71 | d | 78.40 | 73.85 | 59.82 | 53.92 | 45.25 | 32.34 | 52.95 | |||||||||||
1979 | 26.79 | 31.25 | 44.07 | c | 48.00 | v | ----- | z | 69.38 | 80.06 | 77.73 | i | 71.67 | f | 56.94 | 36.60 | 28.75 | k | 49.30 | e | ||||||
1980 | 29.85 | a | 35.94 | d | 40.87 | e | 53.02 | 57.67 | h | 69.05 | b | 77.13 | 75.92 | e | 68.78 | l | 55.32 | 43.75 | f | 35.16 | o | 54.64 | d | |||
1981 | 30.68 | l | 36.54 | 42.56 | 49.60 | a | 55.27 | c | 68.46 | g | ----- | z | 80.95 | c | ----- | z | ----- | z | ----- | z | ----- | z | 52.98 | g | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.46 | 34.15 | 41.43 | 49.95 | 60.08 | 69.75 | 78.10 | 76.87 | 66.14 | 54.05 | 42.16 | 31.79 | 52.26 | |||||||||||||
S.D. | 3.80 | 3.32 | 3.27 | 3.25 | 3.24 | 3.24 | 1.85 | 2.30 | 2.84 | 3.53 | 3.18 | 3.77 | 0.92 | |||||||||||||
SKEW | -0.17 | -0.08 | -0.49 | 0.64 | 0.26 | 0.66 | -0.49 | 0.01 | -0.81 | -0.40 | 0.38 | -0.11 | -0.16 | |||||||||||||
MAX | 36.84 | 41.25 | 46.40 | 57.72 | 65.95 | 77.65 | 81.52 | 80.95 | 70.69 | 58.94 | 50.72 | 39.81 | 53.38 | |||||||||||||
MIN | 21.10 | 26.70 | 33.18 | 44.12 | 54.31 | 63.47 | 73.73 | 71.85 | 59.40 | 46.24 | 36.59 | 22.89 | 51.05 | |||||||||||||
YRS | 27 | 28 | 29 | 28 | 30 | 29 | 26 | 29 | 26 | 24 | 26 | 27 | 8 |