YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1911 | ----- | z | ----- | z | 36.10 | a | 43.09 | h | 52.68 | 65.93 | b | 66.55 | 68.94 | ----- | z | 46.56 | f | 49.00 | h | 22.29 | g | 58.04 | g | |||
1912 | 25.00 | g | 25.79 | j | 30.96 | c | 38.69 | d | 50.54 | e | 62.79 | a | 67.58 | g | 67.00 | d | 52.39 | l | 46.52 | j | 36.75 | b | 20.74 | d | 43.93 | e |
1913 | 21.57 | a | 21.56 | a | 30.83 | h | 36.91 | s | 60.75 | w | 64.47 | k | 68.41 | n | 71.85 | d | 57.20 | ----- | z | 37.53 | m | 24.43 | q | 43.04 | h | |
1914 | 27.93 | q | 29.56 | s | ----- | z | ----- | z | 54.22 | m | ----- | z | 69.71 | q | ----- | z | 61.00 | o | ----- | z | 45.92 | r | 24.31 | o | ----- | z |
1915 | ----- | z | 31.69 | o | ----- | z | 48.33 | x | ----- | z | ----- | z | ----- | z | ----- | z | 59.04 | f | 53.29 | g | 38.76 | m | ----- | z | ----- | z |
1916 | ----- | z | 39.95 | i | 39.47 | a | 40.21 | k | 54.45 | k | 64.36 | b | 69.44 | f | 65.83 | a | 59.55 | a | 48.64 | c | 32.78 | c | 19.81 | d | 47.21 | e |
1917 | 21.16 | 25.54 | 24.97 | 36.17 | 45.04 | e | 62.29 | f | 68.40 | f | 58.93 | a | 44.17 | a | 42.08 | g | 41.68 | b | 30.33 | a | 36.44 | c | ||||
1918 | 21.69 | e | 25.94 | l | 40.12 | f | 36.83 | a | 52.69 | e | 68.97 | a | 68.86 | b | 70.19 | 60.62 | d | 51.59 | d | 33.46 | b | 25.97 | 49.09 | b | ||
1919 | 27.90 | 23.56 | c | 33.13 | 43.28 | a | 53.62 | j | 66.00 | j | 74.92 | e | 72.21 | l | 63.08 | r | ----- | z | ----- | z | 31.80 | a | 39.10 | f | ||
1920 | 36.07 | a | 30.07 | b | 30.69 | b | ----- | z | 54.64 | q | 56.74 | k | 71.58 | l | 66.00 | p | 61.09 | h | 48.37 | d | 32.26 | k | 26.70 | k | 36.30 | h |
1921 | 30.36 | i | 30.58 | b | 40.26 | d | 40.61 | b | 53.71 | 62.11 | b | 66.28 | b | 66.18 | n | 63.29 | f | 54.61 | 42.61 | b | 33.94 | 47.19 | c | |||
1922 | 23.77 | a | 23.96 | a | 34.65 | 40.43 | 51.52 | 68.67 | 68.84 | 63.23 | a | 57.00 | a | 52.55 | 36.45 | a | 25.17 | a | 45.52 | |||||||
1923 | 28.24 | b | 25.64 | 28.13 | 41.07 | 52.19 | e | 65.24 | a | 70.21 | b | 66.55 | b | 59.07 | 42.58 | 39.17 | 29.97 | b | 45.67 | |||||||
1924 | 23.67 | d | 34.90 | 27.43 | a | 41.03 | a | 50.84 | 65.50 | 69.45 | 70.10 | 63.03 | 51.00 | l | 39.17 | a | 29.86 | b | 46.82 | a | ||||||
1925 | 25.54 | g | 32.05 | i | 38.93 | b | 48.17 | a | 57.12 | o | 60.97 | 68.39 | 63.71 | 59.87 | 48.97 | b | 36.95 | h | 29.97 | 52.37 | d | |||||
1926 | 23.38 | j | 27.78 | e | 35.06 | o | 44.39 | b | 51.83 | g | 62.52 | a | 66.90 | 69.48 | 60.36 | b | 53.50 | g | 34.12 | e | 26.62 | e | 49.02 | d | ||
1927 | 41.14 | x | 27.72 | c | 30.90 | 39.83 | a | ----- | z | 62.48 | a | 68.69 | e | 63.61 | c | 56.16 | e | ----- | z | ----- | z | ----- | z | 49.91 | e | |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.67 | a | 68.45 | 64.37 | c | 51.10 | 34.40 | 27.40 | a | 52.56 | f | |||
1929 | 23.74 | d | 18.81 | a | 31.16 | 37.43 | 49.94 | 63.45 | a | 66.10 | 65.37 | a | 53.52 | a | 45.04 | e | 28.45 | a | 33.73 | a | 43.06 | |||||
1930 | 18.93 | b | 32.54 | 32.00 | b | 51.07 | 52.14 | b | 66.83 | ----- | z | ----- | z | 59.14 | a | 47.77 | a | 36.07 | a | 26.23 | a | 42.27 | b | |||
1931 | ----- | z | 28.30 | a | 29.54 | c | 41.36 | b | 47.93 | a | 60.67 | c | 73.87 | 69.55 | 63.83 | 49.71 | ----- | z | 28.21 | l | 51.64 | c | ||||
1932 | 20.87 | a | 30.38 | 27.32 | 42.63 | 53.71 | 61.40 | 71.16 | 70.10 | 62.30 | 45.19 | 35.47 | ----- | z | 47.32 | a | ||||||||||
1933 | 24.23 | 18.93 | 36.23 | 38.37 | 47.87 | 68.70 | 74.23 | 67.65 | 63.33 | 55.10 | 40.47 | 32.42 | 47.29 | |||||||||||||
1934 | 29.10 | 33.50 | 38.45 | 46.43 | 60.61 | 65.63 | 74.13 | 71.26 | 59.13 | 54.03 | 37.10 | 25.81 | 49.60 | |||||||||||||
1935 | 30.29 | 32.71 | 31.71 | 38.37 | 44.03 | 63.53 | 71.90 | 70.39 | 64.23 | 50.10 | 34.73 | 29.61 | 46.80 | |||||||||||||
1936 | 24.13 | 23.72 | 34.26 | 44.93 | 58.16 | 68.55 | a | 73.39 | 67.87 | a | 55.82 | b | 40.74 | 33.30 | 23.63 | a | 45.71 | |||||||||
1937 | 14.03 | 22.00 | 29.39 | 38.41 | a | 47.00 | 54.33 | 62.31 | b | 60.23 | a | 55.10 | 45.06 | 31.43 | 30.77 | 40.84 | ||||||||||
1938 | 27.52 | 32.29 | 34.16 | 44.63 | 52.90 | 65.83 | 71.06 | 72.13 | 63.90 | 54.35 | 30.07 | a | 29.16 | 48.17 | ||||||||||||
1939 | 27.90 | 21.68 | 38.74 | 48.50 | 59.45 | 65.10 | 76.48 | 71.45 | 64.31 | a | 53.39 | 44.63 | 35.77 | a | 50.62 | |||||||||||
1940 | 24.65 | 29.14 | 38.07 | a | 44.87 | 57.65 | 68.50 | 74.65 | 71.77 | 63.33 | 53.13 | 34.77 | 32.47 | a | 49.41 | |||||||||||
1941 | 31.65 | 37.21 | 35.65 | 42.67 | 55.90 | 63.37 | 71.29 | 71.32 | 58.00 | 50.03 | 39.40 | 32.81 | 49.11 | |||||||||||||
1942 | 29.65 | 24.21 | 31.48 | 51.17 | a | 52.10 | 64.37 | 73.29 | 75.13 | 64.87 | 53.77 | 38.33 | c | 31.32 | 49.14 | |||||||||||
1943 | 29.52 | 36.14 | 31.10 | b | 54.63 | 52.26 | 63.27 | 72.29 | 74.39 | 68.83 | 59.94 | 42.52 | a | 34.03 | 51.58 | |||||||||||
1944 | 30.97 | 29.72 | 27.32 | c | 40.54 | b | 55.68 | 65.07 | 72.67 | a | 76.55 | 68.17 | 56.23 | 39.59 | a | 29.81 | 49.36 | |||||||||
1945 | 30.87 | 29.61 | 35.81 | 39.33 | 52.42 | 61.93 | 75.35 | 74.10 | 63.27 | 50.68 | 36.52 | a | 27.74 | 48.14 | ||||||||||||
1946 | ----- | z | 30.82 | 42.45 | 50.87 | 48.84 | 54.70 | 74.77 | a | 74.81 | 64.80 | 38.94 | ----- | z | 27.37 | a | 50.84 | b | ||||||||
1947 | ----- | z | 25.71 | ----- | z | 36.10 | 54.77 | a | 57.62 | a | 71.74 | 82.74 | 63.00 | 55.68 | 40.03 | 32.81 | 52.02 | b | ||||||||
1948 | 26.70 | a | 32.38 | 30.10 | 42.50 | 57.55 | 65.97 | a | 73.26 | 71.81 | 69.07 | a | 52.16 | 29.37 | 25.35 | 48.02 | ||||||||||
1949 | 27.68 | 25.32 | 37.23 | 42.33 | 50.52 | 66.63 | 72.97 | 71.03 | 64.40 | 49.65 | 42.63 | 30.90 | 48.44 | |||||||||||||
1950 | 23.45 | 32.96 | 34.55 | 46.10 | 47.42 | 66.30 | 68.19 | 69.19 | 61.83 | 57.52 | 34.27 | 34.19 | 48.00 | |||||||||||||
1951 | 24.26 | 30.75 | 35.10 | 37.67 | 52.26 | 59.83 | 72.94 | 68.00 | 62.07 | 48.10 | 35.33 | 25.06 | 45.95 | |||||||||||||
1952 | 24.45 | 26.93 | 28.97 | 42.40 | 52.55 | 68.40 | 72.10 | 70.45 | 67.17 | 56.42 | 35.27 | 31.35 | 48.04 | |||||||||||||
1953 | 30.58 | 26.50 | 36.00 | 37.20 | 50.13 | 68.03 | 73.52 | 68.61 | 66.50 | 55.81 | 39.27 | 25.35 | 48.12 | |||||||||||||
1954 | 28.45 | 32.86 | 28.48 | 43.00 | 56.84 | 68.10 | 77.16 | 69.55 | 64.63 | 53.48 | 41.77 | 30.35 | 49.56 | |||||||||||||
1955 | 24.45 | 21.96 | 32.55 | 43.07 | 53.84 | 61.47 | 74.29 | 70.29 | 67.03 | 53.00 | 29.30 | 31.45 | 46.89 | |||||||||||||
1956 | 30.06 | 26.52 | 33.45 | 42.60 | 56.52 | 70.67 | 70.10 | 67.45 | 68.93 | 52.00 | 30.97 | 30.52 | 48.32 | |||||||||||||
1957 | 22.61 | 34.57 | 32.94 | 36.60 | 48.48 | 62.03 | 69.71 | 71.61 | 60.97 | 50.48 | 31.67 | 31.77 | 46.12 | |||||||||||||
1958 | 29.29 | 34.96 | 30.81 | 41.47 | 57.35 | 68.30 | 72.10 | 71.65 | 63.97 | 53.77 | 39.73 | 32.10 | 49.62 | |||||||||||||
1959 | 27.61 | 28.25 | 31.55 | 42.20 | 52.32 | 68.45 | a | 71.26 | 70.00 | 58.50 | 46.16 | 36.83 | 34.55 | 47.31 | ||||||||||||
1960 | 25.06 | 22.00 | 35.48 | 47.07 | 54.97 | 66.50 | 72.23 | 72.26 | 64.33 | 50.29 | 37.33 | 31.45 | 48.25 | |||||||||||||
1961 | 32.52 | 32.18 | 36.00 | 40.27 | 54.90 | 68.43 | 70.55 | 69.74 | 53.30 | 50.94 | 33.70 | 24.81 | 47.28 | |||||||||||||
1962 | 25.03 | 31.25 | 31.16 | 48.50 | 56.03 | 63.67 | 70.03 | 70.58 | 63.43 | 56.03 | 42.43 | 33.10 | 49.27 | |||||||||||||
1963 | 22.13 | a | 33.64 | 35.19 | 42.90 | 58.74 | 67.63 | 72.90 | 68.10 | 67.67 | 58.55 | 41.90 | a | 29.61 | 49.91 | |||||||||||
1964 | 24.97 | 23.34 | 29.58 | 40.47 | 55.45 | 61.37 | 78.94 | 67.71 | 63.30 | 55.97 | 36.45 | a | 26.00 | 46.96 | ||||||||||||
1965 | 28.58 | 28.43 | 26.81 | 43.67 | 52.63 | a | 63.40 | 69.29 | 66.52 | 52.70 | 55.35 | 39.53 | 32.65 | 46.63 | ||||||||||||
1966 | 25.26 | 26.61 | 38.97 | 44.80 | 57.55 | 64.53 | 75.35 | 70.06 | 64.17 | 50.89 | d | 40.86 | b | 26.32 | 48.78 | |||||||||||
1967 | 26.66 | b | 28.07 | 38.45 | b | 44.17 | 50.45 | 59.17 | 71.68 | 70.23 | a | 60.63 | 51.74 | 37.20 | 23.97 | 46.87 | ||||||||||
1968 | 31.30 | a | 32.52 | 37.03 | a | 38.60 | 48.58 | 66.53 | 71.68 | 65.80 | a | 59.77 | 51.97 | a | 31.43 | 25.37 | a | 46.71 | ||||||||
1969 | 30.39 | 29.82 | 32.39 | 47.31 | a | 59.57 | a | 57.03 | 74.74 | 74.16 | 65.07 | 39.93 | a | 35.53 | 30.23 | 48.01 | ||||||||||
1970 | 25.19 | 34.61 | 31.13 | 36.37 | 54.90 | 62.43 | 72.23 | 73.83 | b | 58.03 | 43.58 | 34.67 | 28.13 | 46.26 | ||||||||||||
1971 | 26.62 | b | 26.64 | 31.48 | 45.23 | 49.10 | 67.07 | 72.21 | c | 72.03 | 61.17 | a | 51.03 | a | 36.63 | 24.77 | 47.00 | |||||||||
1972 | 25.57 | a | 31.75 | a | 40.68 | 45.53 | 55.47 | a | 65.66 | a | 72.07 | a | 69.58 | 60.77 | 50.10 | a | 29.90 | 25.87 | 47.74 | |||||||
1973 | 28.19 | 32.07 | 34.03 | b | 38.04 | b | 51.96 | e | 63.50 | 68.23 | a | 69.31 | b | 57.70 | c | 50.31 | b | 33.79 | a | 27.59 | d | 46.23 | ||||
1974 | 22.43 | a | 25.79 | 35.36 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.27 | ----- | z | ----- | z | ----- | z | 36.83 | i | ||
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 72.03 | 74.61 | 69.65 | 66.40 | 54.68 | 36.20 | 30.00 | a | 57.65 | e | ||||||
1978 | 27.17 | b | 31.93 | a | 41.87 | 47.00 | ----- | z | ----- | z | 76.47 | p | 70.23 | 64.53 | 52.71 | 36.53 | 21.26 | 43.69 | c | |||||||
1979 | 17.77 | a | 27.48 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 22.62 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.16 | 28.64 | 33.55 | 42.63 | 52.99 | 64.48 | 71.67 | 69.73 | 61.70 | 51.09 | 36.44 | 28.97 | 47.63 | |||||||||||||
S.D. | 4.03 | 4.44 | 4.12 | 4.26 | 3.79 | 3.70 | 3.04 | 3.77 | 4.60 | 4.57 | 3.95 | 3.70 | 1.92 | |||||||||||||
SKEW | -0.37 | -0.27 | 0.17 | 0.55 | -0.13 | -0.63 | -0.42 | 0.02 | -1.06 | -0.73 | -0.05 | -0.42 | -1.04 | |||||||||||||
MAX | 36.07 | 37.21 | 42.45 | 54.63 | 60.61 | 72.03 | 78.94 | 82.74 | 69.07 | 59.94 | 44.63 | 35.77 | 51.58 | |||||||||||||
MIN | 14.03 | 18.81 | 24.97 | 36.10 | 44.03 | 54.33 | 62.31 | 58.93 | 44.17 | 38.94 | 28.45 | 19.81 | 40.84 | |||||||||||||
YRS | 53 | 58 | 57 | 57 | 53 | 57 | 56 | 59 | 59 | 55 | 55 | 57 | 42 |