YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1911 | ----- | z | ----- | z | 48.10 | 55.27 | 65.26 | 75.72 | a | 82.61 | 81.61 | 71.30 | 58.35 | 45.47 | 34.32 | 61.80 | b | |||||||||
1912 | 36.83 | a | 41.00 | a | 46.29 | c | 52.61 | b | 64.57 | a | 77.14 | a | 79.23 | 78.67 | a | 65.07 | b | 54.39 | 45.60 | 35.03 | 56.37 | |||||
1913 | ----- | z | 33.57 | 42.77 | 58.53 | 67.19 | 74.77 | 79.65 | 81.58 | 70.50 | 56.39 | 48.10 | 33.52 | 58.78 | a | |||||||||||
1914 | 35.10 | 37.57 | 48.94 | ----- | z | 69.72 | b | 75.07 | 82.71 | 83.32 | 70.50 | 60.87 | 48.17 | 33.40 | a | 58.67 | a | |||||||||
1915 | 32.16 | 40.07 | a | 50.19 | 63.55 | a | 65.60 | a | 75.93 | 83.32 | 85.00 | a | 68.38 | n | 60.45 | 46.80 | 38.97 | a | 58.37 | a | ||||||
1916 | 31.77 | 37.45 | 51.74 | 61.73 | 67.45 | 77.17 | a | 83.68 | 81.34 | b | 73.13 | 56.00 | 40.80 | 33.61 | 57.99 | |||||||||||
1917 | 25.87 | 33.63 | a | 37.97 | a | 52.07 | 64.90 | a | 77.23 | 87.42 | 81.81 | 72.03 | 63.90 | 49.79 | a | 45.48 | 57.68 | |||||||||
1918 | 38.26 | d | 37.50 | 49.06 | 55.52 | a | 64.19 | 83.18 | b | 85.06 | 79.45 | 72.87 | 63.42 | 45.80 | 35.00 | a | 59.11 | |||||||||
1919 | 31.48 | 38.86 | 47.06 | 58.93 | 70.10 | a | 83.31 | a | ----- | z | 82.11 | d | 72.00 | 51.30 | a | 42.03 | 27.35 | 54.96 | a | |||||||
1920 | 29.61 | 37.93 | 43.48 | 48.77 | d | 64.71 | 71.00 | 82.03 | a | 81.23 | 71.27 | 54.45 | 44.04 | b | 36.48 | 55.42 | ||||||||||
1921 | 36.94 | 39.25 | 50.42 | 52.50 | 66.77 | 78.80 | 85.64 | f | 82.61 | 70.67 | 63.77 | 53.23 | 39.30 | a | 57.66 | a | ||||||||||
1922 | 25.42 | 33.59 | a | 41.30 | a | 50.90 | 68.71 | 81.83 | a | 85.39 | 83.26 | 74.28 | a | 61.13 | 43.73 | 36.40 | a | 57.16 | ||||||||
1923 | 37.13 | 29.78 | a | 41.45 | 54.03 | a | 65.81 | 69.17 | 81.90 | 79.41 | b | 70.70 | 52.65 | 45.73 | 34.00 | o | 57.07 | a | ||||||||
1924 | ----- | z | ----- | z | 42.16 | 56.40 | 71.87 | a | 79.20 | 84.87 | a | 81.42 | 71.10 | a | 58.68 | 45.59 | a | 30.72 | b | 62.20 | b | |||||
1925 | 31.03 | 42.79 | 49.29 | 58.43 | 70.97 | 74.10 | 87.68 | 81.10 | 79.28 | a | ----- | z | 50.67 | 45.28 | b | 60.96 | a | |||||||||
1926 | 45.29 | c | 48.81 | a | 53.68 | 63.37 | 71.37 | d | 87.33 | c | 91.41 | i | 88.13 | 77.23 | 66.65 | 58.67 | 45.74 | 64.21 | a | |||||||
1927 | 42.48 | 47.96 | 52.68 | 62.33 | 66.63 | a | 77.30 | 85.48 | 79.81 | 70.45 | h | 58.79 | b | 51.10 | a | 35.10 | 59.97 | a | ||||||||
1928 | 32.19 | 38.04 | a | 49.19 | 54.83 | 72.45 | 78.77 | d | 86.77 | 83.45 | 75.73 | 65.93 | q | 46.07 | 30.74 | 58.93 | a | |||||||||
1929 | 31.38 | r | 33.33 | s | 44.67 | d | 52.70 | 65.38 | b | 76.61 | b | 85.43 | c | ----- | z | 70.14 | a | 62.35 | ----- | z | ----- | z | 65.32 | 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 | 35.18 | n | ----- | z |
1969 | 39.07 | d | 38.75 | 43.93 | c | 57.90 | 72.63 | d | 74.40 | 83.52 | 87.55 | 75.48 | a | 55.39 | 47.03 | 37.58 | 59.44 | |||||||||
1970 | 37.50 | a | 43.86 | 46.94 | 52.63 | 66.90 | a | 78.17 | 84.65 | 86.55 | 70.53 | 56.00 | a | 47.80 | 36.23 | a | 58.98 | |||||||||
1971 | 36.68 | c | 41.96 | b | 46.71 | 55.30 | 65.39 | 76.39 | b | 86.65 | 88.26 | d | 70.85 | c | 56.57 | a | 43.63 | 34.11 | c | 58.54 | ||||||
1972 | 37.27 | e | 39.48 | 55.81 | 58.87 | 71.42 | 79.70 | 87.07 | b | 85.35 | 72.23 | 64.71 | q | 45.71 | b | 31.23 | a | 60.38 | a | |||||||
1973 | 30.70 | a | 37.86 | 45.43 | a | 55.54 | b | 68.58 | 77.33 | 85.65 | 85.28 | b | 70.20 | 61.67 | a | ----- | z | 38.23 | 59.68 | a | ||||||
1974 | 31.42 | ----- | z | 49.00 | o | 54.20 | 67.90 | a | 76.71 | i | 85.48 | 83.10 | a | 76.10 | 64.73 | i | 50.57 | 37.58 | 60.79 | d | ||||||
1975 | 32.94 | 37.85 | b | 47.00 | s | 54.86 | w | 62.26 | d | 71.00 | a | 85.08 | f | 81.55 | 76.55 | a | 66.62 | o | 36.10 | t | 35.56 | d | 56.81 | e | ||
1976 | 35.37 | a | 39.97 | 44.32 | c | 55.67 | 69.32 | 74.30 | 84.60 | k | 79.32 | i | 72.47 | ----- | z | 48.70 | 35.71 | 52.87 | c | |||||||
1977 | 31.13 | 40.93 | 44.06 | 61.17 | 62.58 | 83.69 | a | 86.10 | 83.04 | c | 73.78 | l | 63.82 | c | ----- | z | 42.00 | 59.85 | b | |||||||
1978 | 38.71 | 42.00 | 50.35 | 54.67 | 63.65 | 76.65 | d | 86.84 | 81.52 | 66.93 | 59.84 | 48.47 | 34.61 | 58.69 | ||||||||||||
1979 | 28.16 | 33.64 | 50.13 | 56.18 | s | ----- | z | 78.93 | 87.39 | 85.41 | i | 78.62 | f | 62.77 | 41.07 | 34.62 | j | 54.58 | e | |||||||
1980 | 34.30 | a | 41.32 | d | 46.48 | d | 60.30 | 64.30 | h | 77.30 | 84.68 | 83.81 | e | 74.94 | l | 60.65 | 48.25 | f | 39.69 | o | 61.10 | d | ||||
1981 | 33.26 | l | 41.54 | 48.03 | 55.17 | 62.21 | b | 71.96 | g | 86.94 | 86.36 | c | 79.66 | a | ----- | z | ----- | z | ----- | z | 65.70 | e | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.25 | 39.18 | 47.09 | 56.34 | 67.22 | 77.38 | 84.75 | 83.02 | 72.55 | 59.21 | 47.09 | 36.27 | 57.94 | |||||||||||||
S.D. | 4.68 | 4.16 | 4.04 | 3.83 | 3.10 | 3.90 | 2.28 | 2.61 | 3.37 | 3.97 | 3.87 | 4.46 | 1.30 | |||||||||||||
SKEW | 0.20 | 0.14 | -0.05 | 0.26 | 0.19 | 0.33 | -0.84 | 0.48 | 0.27 | -0.18 | 0.87 | 0.59 | -0.73 | |||||||||||||
MAX | 45.29 | 48.81 | 55.81 | 63.55 | 72.63 | 87.33 | 87.68 | 88.26 | 79.66 | 66.65 | 58.67 | 45.74 | 59.44 | |||||||||||||
MIN | 25.42 | 29.78 | 37.97 | 48.77 | 62.21 | 69.17 | 79.23 | 78.67 | 65.07 | 51.30 | 40.80 | 27.35 | 55.42 | |||||||||||||
YRS | 27 | 28 | 30 | 29 | 30 | 30 | 27 | 29 | 27 | 25 | 26 | 27 | 10 |