YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1920 | ----- | z | ----- | z | ----- | z | ----- | z | 64.71 | x | 65.92 | e | 70.52 | b | 67.21 | c | 61.06 | c | 49.00 | b | 39.45 | a | ----- | z | 58.86 | f |
1921 | 33.71 | e | 36.78 | a | 44.85 | a | 47.32 | 57.59 | b | 66.73 | 70.68 | 68.19 | 64.41 | a | 54.39 | 42.88 | 35.60 | b | 51.93 | |||||||
1922 | 29.35 | 35.89 | 39.24 | 46.87 | 60.45 | c | 70.62 | 75.40 | 73.35 | a | 66.60 | 52.98 | 37.40 | 37.52 | b | 52.14 | ||||||||||
1923 | 36.19 | 35.20 | 40.15 | 49.94 | c | 60.55 | 68.08 | 74.44 | 69.31 | 59.57 | 48.50 | 39.14 | b | 30.71 | 50.98 | |||||||||||
1924 | 28.77 | 36.58 | d | 37.71 | b | 48.17 | a | 59.14 | b | 69.93 | a | 70.38 | c | 69.18 | 61.52 | 48.78 | a | 38.13 | 26.58 | a | 49.57 | |||||
1925 | 24.97 | a | 34.07 | 42.18 | a | 52.60 | a | 63.21 | 69.42 | 73.60 | 67.95 | 62.69 | a | 51.39 | 37.28 | 29.23 | 50.72 | |||||||||
1926 | 24.97 | 37.32 | 40.50 | 48.50 | 56.03 | 67.35 | 68.42 | 68.84 | 63.90 | 52.06 | 40.23 | 26.29 | 49.53 | |||||||||||||
1927 | 34.08 | 39.59 | 41.05 | 50.62 | 59.85 | 65.85 | 71.81 | 66.60 | 60.05 | 49.98 | a | 43.75 | 26.55 | 50.81 | ||||||||||||
1928 | 32.32 | 32.86 | 42.95 | 46.80 | b | 57.21 | 64.63 | g | 70.23 | a | 65.63 | 59.10 | 50.73 | 35.18 | 27.87 | 47.35 | a | |||||||||
1929 | 30.63 | 30.80 | a | 42.06 | 48.45 | 58.73 | 68.70 | 72.48 | 67.40 | 60.82 | 49.76 | 36.15 | 34.44 | 50.03 | ||||||||||||
1930 | 28.65 | 39.73 | 39.61 | 54.80 | 54.77 | 68.33 | 69.24 | 69.66 | 62.18 | 49.84 | 36.55 | 27.45 | 50.07 | |||||||||||||
1931 | 28.77 | a | 36.70 | 40.67 | a | 51.08 | 58.37 | a | 68.35 | g | 72.76 | 68.48 | 64.03 | 53.40 | 36.93 | 27.12 | a | 48.94 | a | |||||||
1932 | 24.40 | 37.83 | 41.35 | a | 51.22 | 57.56 | 66.92 | 71.44 | 69.11 | 61.20 | 50.53 | 41.82 | 24.77 | 49.85 | ||||||||||||
1933 | 26.61 | 30.16 | 44.10 | 46.05 | 56.05 | 68.10 | 71.52 | 68.27 | 65.47 | 54.78 | a | 42.13 | 37.45 | 50.89 | ||||||||||||
1934 | 32.53 | 40.23 | 48.31 | 53.98 | 64.06 | 69.12 | 75.08 | 72.11 | 62.50 | 54.34 | 42.18 | 33.24 | 53.97 | |||||||||||||
1935 | 34.05 | 35.48 | 42.31 | 50.55 | 54.02 | 68.62 | 72.61 | 68.73 | 61.62 | 52.13 | 37.92 | 32.52 | 50.88 | |||||||||||||
1936 | 32.73 | 38.28 | 43.52 | 51.92 | 60.26 | 68.85 | 71.41 | b | 71.07 | a | 60.42 | 50.98 | 37.70 | 33.47 | 51.72 | |||||||||||
1937 | 23.10 | 35.29 | 40.56 | 51.17 | 62.08 | 68.52 | 72.61 | 73.69 | 65.50 | 55.98 | 43.82 | 36.25 | a | 52.38 | ||||||||||||
1938 | 33.63 | 36.89 | a | 44.24 | 51.41 | a | 59.02 | 70.00 | 72.15 | 71.95 | 61.17 | a | 53.02 | 36.02 | a | 36.58 | 52.17 | |||||||||
1939 | 31.84 | 29.00 | a | 43.44 | 53.81 | a | 61.77 | 71.18 | b | 73.24 | 70.60 | 65.98 | 51.25 | a | 40.05 | 38.23 | 52.53 | |||||||||
1940 | 33.68 | 37.48 | 45.35 | a | 52.00 | 61.66 | 69.38 | a | 71.56 | 70.42 | f | 62.86 | b | 51.18 | a | 38.32 | 37.94 | 51.04 | a | |||||||
1941 | 34.02 | a | 39.80 | 41.94 | 45.70 | 60.15 | 64.53 | 70.71 | 70.21 | 62.25 | 51.84 | 41.92 | 35.11 | 51.51 | ||||||||||||
1942 | 34.02 | 32.64 | 39.97 | 50.65 | 60.24 | 70.25 | 74.18 | 71.42 | 63.62 | 53.89 | 45.43 | 39.24 | 52.96 | |||||||||||||
1943 | 36.00 | 40.71 | 45.42 | 56.20 | 62.02 | 70.27 | 74.06 | 73.02 | b | 65.03 | 52.52 | 41.48 | 30.10 | 53.90 | ||||||||||||
1944 | 28.84 | 36.76 | 42.82 | 49.78 | 59.73 | 68.27 | 65.07 | c | ----- | z | 64.47 | 54.63 | 40.80 | 35.26 | 49.67 | a | ||||||||||
1945 | 34.42 | 39.96 | ----- | z | ----- | z | ----- | z | ----- | z | 75.16 | 74.92 | 67.13 | 54.65 | 39.92 | 24.38 | n | 55.17 | e | |||||||
1946 | 28.57 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.57 | k |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.18 | 29.37 | a | 32.77 | j | |
1948 | 28.12 | a | 34.04 | b | 36.52 | f | 53.72 | e | 59.76 | b | 66.79 | b | 72.52 | a | 69.88 | a | 64.18 | b | 51.34 | b | 36.93 | c | 34.90 | a | 52.02 | a |
1949 | 27.58 | 32.94 | a | 41.95 | a | 50.65 | 57.76 | 67.35 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.83 | d | 44.15 | e | ||||
1950 | 33.56 | 37.19 | l | 43.25 | m | ----- | z | 57.74 | 69.79 | b | 73.38 | f | ----- | z | ----- | z | ----- | z | 42.83 | c | 38.87 | 48.56 | g | |||
1951 | 32.83 | a | 35.59 | 41.94 | 50.81 | a | 60.21 | 68.07 | 76.06 | 71.22 | a | 65.02 | 51.56 | 38.27 | 31.19 | 51.90 | ||||||||||
1952 | 34.73 | 34.16 | 38.16 | 50.28 | 61.19 | 70.43 | 72.77 | 73.00 | 64.15 | 53.16 | 35.32 | 31.03 | a | 51.53 | ||||||||||||
1953 | 38.82 | 34.17 | b | 43.44 | d | 49.88 | a | 54.89 | 70.80 | b | 73.63 | 69.47 | a | 64.22 | a | 50.92 | 39.84 | a | 28.16 | c | 51.52 | |||||
1954 | 33.16 | 40.09 | 39.39 | 55.43 | 60.79 | 69.02 | 74.20 | a | 69.07 | a | 63.67 | a | 58.88 | j | 40.08 | q | 28.87 | a | 53.37 | b | ||||||
1955 | 22.77 | 28.71 | 37.21 | c | ----- | z | 57.50 | g | 71.07 | c | 70.76 | 72.15 | ----- | z | ----- | z | 37.83 | x | 38.05 | b | 48.68 | e | ||||
1956 | 38.93 | d | 32.90 | 44.23 | a | 48.87 | o | 62.62 | f | ----- | z | ----- | z | 69.21 | q | 67.42 | 53.81 | 36.67 | 32.92 | 43.84 | e | |||||
1957 | 36.69 | 44.02 | 43.35 | 49.43 | 55.95 | 67.87 | 72.92 | 68.71 | 63.10 | 51.11 | 35.82 | 35.05 | 52.00 | |||||||||||||
1958 | 30.94 | 38.95 | 37.72 | a | 48.53 | 61.92 | 72.28 | 73.42 | 72.52 | 65.20 | 52.97 | 42.18 | 39.00 | 52.97 | ||||||||||||
1959 | 35.18 | 34.39 | 42.47 | 55.07 | g | 59.53 | 71.50 | 73.79 | 71.39 | 64.60 | 53.47 | 41.95 | 35.56 | 53.08 | a | |||||||||||
1960 | 29.19 | 32.60 | 44.84 | 51.90 | ----- | z | ----- | z | 72.85 | n | 72.11 | 64.90 | 50.47 | 41.52 | 25.61 | 45.91 | c | |||||||||
1961 | 29.85 | 37.93 | 43.85 | 50.00 | 59.07 | a | 69.37 | 72.45 | 69.94 | 60.60 | 50.39 | 38.65 | 30.82 | 51.08 | ||||||||||||
1962 | 30.67 | a | 38.21 | 35.56 | 52.23 | 56.95 | 65.43 | 71.00 | a | 72.10 | 64.00 | 53.34 | 43.02 | 34.48 | 51.42 | |||||||||||
1963 | 28.81 | 35.55 | 41.11 | 50.17 | 61.11 | 66.02 | 74.56 | 69.37 | 65.10 | 54.85 | 40.77 | 31.12 | a | 51.55 | ||||||||||||
1964 | 27.31 | 28.19 | 36.98 | 46.53 | 58.21 | 66.35 | 73.19 | 69.76 | 63.00 | a | 52.89 | 39.56 | c | 34.02 | b | 49.67 | ||||||||||
1965 | 35.74 | h | 34.87 | b | 36.20 | h | 45.07 | p | 55.06 | o | 63.21 | i | ----- | z | ----- | z | ----- | z | 53.67 | p | 46.55 | i | 33.16 | c | 34.01 | j |
1966 | 28.76 | b | 42.25 | p | 44.46 | s | 52.22 | g | 62.73 | 68.30 | 76.70 | a | 70.48 | 61.45 | a | ----- | z | ----- | z | ----- | z | 61.40 | f | |||
1967 | 29.46 | e | ----- | z | 50.41 | n | 52.00 | 58.94 | 67.45 | 75.08 | 69.10 | 63.05 | 56.42 | a | 45.15 | 28.73 | a | 54.54 | b | |||||||
1968 | 32.05 | 40.53 | 41.94 | 47.60 | 59.03 | 69.98 | 72.26 | b | 67.89 | 62.95 | 54.87 | 39.60 | a | 31.73 | 51.70 | |||||||||||
1969 | 39.18 | 35.23 | 38.18 | 52.50 | k | 60.26 | 66.80 | 74.06 | 72.69 | 64.92 | 50.94 | 39.33 | a | 36.87 | 52.59 | a | ||||||||||
1970 | 30.89 | 39.14 | 40.74 | 46.13 | 59.35 | 66.38 | 72.75 | a | 71.61 | 62.86 | a | 48.35 | a | 41.48 | 33.65 | 51.11 | ||||||||||
1971 | 33.52 | 36.50 | 43.82 | 48.44 | e | 56.48 | 69.30 | 73.85 | 68.84 | 62.32 | 49.63 | 39.83 | 30.00 | 51.04 | ||||||||||||
1972 | 35.65 | 40.16 | 49.44 | 52.00 | 59.07 | a | 67.97 | 73.74 | 68.76 | 63.57 | 53.98 | 36.48 | 32.85 | 52.80 | ||||||||||||
1973 | 28.87 | 34.68 | 39.31 | 44.72 | 57.10 | 66.07 | 70.82 | 69.90 | 62.88 | 53.94 | 43.24 | a | 35.82 | 50.61 | ||||||||||||
1974 | 31.47 | 35.27 | 48.23 | 49.74 | a | 62.82 | 71.11 | b | 71.19 | 68.16 | 61.81 | a | 53.19 | 40.71 | a | 29.27 | 51.91 | |||||||||
1975 | 32.00 | 36.02 | 41.69 | 45.47 | 55.77 | 66.85 | 71.13 | 69.27 | 60.88 | 52.27 | 40.43 | 33.40 | 50.43 | |||||||||||||
1976 | 31.61 | 41.29 | 41.68 | c | 51.28 | e | 59.50 | c | 67.59 | h | 71.92 | a | 69.24 | 62.50 | a | ----- | z | ----- | z | ----- | z | 53.63 | d | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.36 | 36.12 | 41.91 | 50.14 | 59.20 | 68.48 | 72.51 | 70.07 | 63.21 | 52.22 | 39.77 | 32.59 | 51.44 | |||||||||||||
S.D. | 3.82 | 3.42 | 2.93 | 2.71 | 2.33 | 1.82 | 2.06 | 1.99 | 1.93 | 2.01 | 2.67 | 3.93 | 1.12 | |||||||||||||
SKEW | -0.15 | -0.29 | 0.28 | 0.02 | -0.18 | -0.03 | -0.81 | 0.26 | 0.02 | -0.03 | 0.11 | -0.13 | 0.27 | |||||||||||||
MAX | 39.18 | 44.02 | 49.44 | 56.20 | 64.06 | 72.28 | 76.70 | 74.92 | 67.42 | 56.42 | 45.43 | 39.24 | 53.97 | |||||||||||||
MIN | 22.77 | 28.19 | 35.56 | 44.72 | 54.02 | 64.53 | 65.07 | 65.63 | 59.10 | 48.35 | 35.18 | 24.77 | 49.53 | |||||||||||||
YRS | 54 | 51 | 48 | 46 | 49 | 48 | 50 | 49 | 51 | 48 | 50 | 52 | 36 |