YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.72 | a | 86.84 | 87.94 | 78.77 | 69.35 | 54.60 | 38.77 | i | 76.87 | f | |||||
1916 | 39.40 | f | 53.00 | 63.81 | 69.70 | 76.41 | d | 89.08 | f | 89.26 | 86.16 | 83.03 | 66.62 | g | 54.27 | ----- | z | 71.95 | d | |||||||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.67 | 94.95 | j | 91.13 | 84.53 | 77.62 | e | 65.03 | 54.82 | t | 81.00 | g | ||||
1918 | ----- | z | 56.36 | c | 62.87 | 69.68 | h | 73.00 | x | ----- | z | 86.73 | e | 86.81 | o | ----- | z | ----- | z | ----- | z | ----- | z | 68.65 | i | |
1919 | 32.74 | 44.18 | q | 51.85 | d | ----- | z | 81.14 | x | 92.20 | e | ----- | z | ----- | z | ----- | z | 64.70 | h | 41.46 | d | 32.33 | y | 54.56 | h | |
1920 | ----- | z | 50.00 | f | 56.95 | j | 69.55 | s | ----- | z | 89.31 | q | ----- | z | 82.50 | q | 79.33 | 64.94 | 53.63 | 41.58 | 59.87 | h | ||||
1921 | 45.24 | j | 52.50 | 62.29 | 66.86 | b | 77.29 | c | 85.50 | 90.81 | 84.35 | 82.03 | 71.71 | 58.93 | 48.70 | a | 71.00 | a | ||||||||
1922 | 40.57 | h | 44.92 | b | 54.71 | 62.33 | 76.94 | 89.50 | 91.90 | j | 89.10 | 85.00 | 70.58 | 51.52 | g | 48.72 | b | 69.09 | c | |||||||
1923 | 49.35 | 47.21 | 52.03 | 63.90 | 77.68 | 85.33 | 93.77 | 84.97 | 78.13 | 67.38 | j | 52.00 | 41.32 | 65.97 | a | |||||||||||
1924 | 37.86 | b | 54.00 | i | 51.42 | 65.17 | 79.68 | 93.23 | d | 93.20 | a | 91.81 | 82.73 | 68.06 | 58.00 | 36.39 | 68.87 | a | ||||||||
1925 | 32.61 | 51.36 | 59.93 | d | 69.23 | 82.19 | 85.13 | 92.03 | 85.84 | 78.53 | 68.26 | 51.80 | 46.29 | 66.93 | ||||||||||||
1926 | 44.04 | e | 54.14 | 59.65 | 66.10 | 76.29 | 90.67 | 91.03 | 91.77 | 83.39 | b | 74.35 | 60.57 | 41.62 | e | 69.47 | ||||||||||
1927 | 44.35 | h | 51.26 | a | 56.77 | i | 67.67 | 79.48 | 86.17 | 90.77 | 86.26 | 79.43 | 70.81 | 60.07 | 40.32 | 71.22 | b | |||||||||
1928 | 47.13 | 47.83 | 60.29 | 67.03 | 78.35 | 88.27 | 92.29 | j | 89.10 | 85.03 | 69.42 | 50.13 | 40.77 | 65.76 | a | |||||||||||
1929 | 40.77 | 43.25 | 56.75 | c | 62.17 | 75.17 | b | 89.12 | f | 87.83 | a | 86.16 | 78.17 | 68.19 | 54.53 | 50.10 | 63.92 | a | ||||||||
1930 | 36.97 | 53.21 | 57.74 | 74.04 | b | 74.68 | 90.47 | 90.14 | c | 88.23 | 80.62 | d | 68.03 | 55.18 | b | 43.40 | f | 69.94 | a | |||||||
1931 | 43.81 | 48.19 | b | 58.55 | b | 69.97 | 76.26 | d | 88.96 | f | 95.77 | 91.80 | a | 82.43 | 70.35 | 48.50 | 32.42 | 65.28 | a | |||||||
1932 | 33.76 | b | 48.28 | 58.58 | 69.90 | a | 76.94 | 85.79 | a | 92.23 | 89.42 | 82.90 | 68.26 | 57.63 | 35.94 | 66.63 | ||||||||||
1933 | 35.26 | 37.43 | 61.13 | 63.37 | 72.63 | a | 91.83 | 93.58 | 91.74 | 85.83 | 72.48 | 58.87 | 47.23 | 67.62 | ||||||||||||
1934 | 48.45 | 54.64 | 67.90 | 72.97 | 83.35 | 86.30 | 95.97 | 91.26 | 83.23 | 74.84 | 55.77 | 46.16 | 71.74 | |||||||||||||
1935 | 44.80 | a | 50.43 | 56.65 | 69.03 | 73.29 | 92.04 | e | 93.13 | 90.60 | a | 85.96 | c | 70.56 | d | 51.60 | 42.84 | 68.41 | ||||||||
1936 | 43.94 | 48.28 | 59.07 | a | 69.83 | 80.74 | 93.40 | 93.03 | 89.61 | 79.17 | 69.23 | 53.90 | 43.26 | 68.62 | ||||||||||||
1937 | 29.42 | 44.79 | 55.26 | 68.00 | a | 81.06 | 87.40 | 90.61 | 91.29 | 84.13 | 70.03 | 59.50 | 45.16 | 67.22 | ||||||||||||
1938 | 44.55 | 46.61 | 53.90 | 67.17 | 75.77 | 89.00 | 92.13 | 90.39 | 82.27 | 70.39 | 52.90 | 46.06 | 67.59 | |||||||||||||
1939 | 44.92 | f | 38.17 | e | 51.00 | w | 61.90 | t | ----- | z | 89.50 | b | 94.22 | d | 95.43 | j | 83.24 | e | 70.57 | j | 61.79 | p | 60.74 | d | 73.18 | g |
1940 | 44.07 | b | 50.86 | 64.39 | 70.00 | a | 84.29 | 92.60 | 93.55 | i | 92.00 | 82.33 | l | ----- | z | ----- | z | ----- | z | 71.17 | e | |||||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.54 | f | 45.11 | c | 45.11 | k |
1942 | 42.26 | 42.58 | b | 52.31 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.92 | g | 59.80 | 48.55 | b | 49.10 | g | ||
1943 | 45.22 | d | 53.64 | 58.55 | 74.60 | 79.42 | 87.40 | 94.48 | 89.03 | 86.03 | 72.00 | i | 55.90 | 39.26 | 69.41 | a | ||||||||||
1944 | 37.68 | 44.76 | 55.21 | c | 61.17 | 74.77 | 85.18 | b | 92.97 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.53 | e | |||||
1945 | ----- | z | 52.18 | k | 53.13 | 63.03 | 77.52 | 78.94 | n | 92.97 | 88.81 | 83.50 | 70.55 | 56.27 | 42.71 | 69.83 | c | |||||||||
1946 | 43.13 | 53.63 | a | ----- | z | 78.33 | r | 74.73 | a | 91.03 | 91.10 | 89.90 | 82.70 | 66.58 | 50.43 | 48.90 | 69.21 | b | ||||||||
1947 | 43.95 | j | 54.86 | 61.10 | 70.33 | 83.93 | a | 85.13 | 95.33 | a | 90.00 | 86.17 | 70.68 | 49.60 | 42.52 | 71.79 | a | |||||||||
1948 | 43.48 | 44.34 | 50.45 | 72.07 | 80.45 | 85.57 | 93.84 | 89.35 | 87.73 | 71.94 | 49.90 | 46.06 | 67.93 | |||||||||||||
1949 | 34.23 | 38.86 | 57.35 | 70.30 | 74.97 | 85.23 | 93.33 | a | 91.61 | 85.53 | 67.06 | 62.33 | 43.94 | 67.06 | ||||||||||||
1950 | 43.81 | 53.21 | 58.39 | 71.17 | 77.16 | 90.34 | a | 91.29 | 91.45 | 81.23 | 79.42 | 60.60 | 52.10 | 70.85 | ||||||||||||
1951 | 42.55 | 48.93 | 55.58 | 65.87 | 76.97 | 86.33 | 96.40 | a | 89.77 | 86.63 | 67.55 | 48.23 | 38.03 | 66.90 | ||||||||||||
1952 | 39.00 | 45.45 | 49.13 | 66.33 | 78.52 | 87.57 | 91.19 | 91.32 | 84.50 | 76.23 | 47.27 | 39.61 | 66.34 | |||||||||||||
1953 | 49.61 | 48.39 | 59.48 | 65.50 | 71.84 | 92.53 | ----- | z | 89.06 | 87.29 | b | 70.45 | 56.83 | 41.68 | 66.61 | a | ||||||||||
1954 | 45.29 | 58.39 | 55.90 | 76.13 | 83.39 | 89.78 | c | 95.90 | 91.52 | 85.40 | 72.00 | 61.73 | 43.32 | 71.56 | ||||||||||||
1955 | 42.13 | 42.89 | 57.19 | 65.61 | b | 76.25 | o | 84.08 | q | 92.61 | 90.87 | 86.27 | 73.80 | f | 52.93 | 48.19 | 64.30 | c | ||||||||
1956 | 49.94 | 44.72 | 59.13 | 65.70 | g | 79.61 | 92.95 | i | 93.10 | 89.26 | 88.83 | 72.29 | 50.70 | 44.61 | 67.22 | b | ||||||||||
1957 | 43.42 | 50.93 | 58.48 | 63.21 | a | 71.03 | 83.11 | k | 89.96 | f | 87.96 | c | 83.28 | a | 66.57 | a | 47.13 | 45.33 | a | 61.73 | b | |||||
1958 | 43.84 | 51.37 | a | 50.68 | 65.00 | 83.00 | 92.46 | b | 93.45 | 91.77 | 80.27 | 67.42 | 54.07 | 52.97 | 68.86 | |||||||||||
1959 | 45.19 | 47.00 | 58.03 | 69.00 | 76.90 | 91.93 | 95.06 | 86.32 | 81.40 | 66.29 | g | 54.19 | i | 45.71 | n | 72.32 | c | |||||||||
1960 | 37.12 | n | 43.14 | 60.06 | 68.83 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.05 | k | 55.21 | a | 36.87 | a | 48.82 | h | ||
1961 | 39.87 | 51.54 | b | 56.16 | 67.40 | 76.84 | 89.67 | 91.94 | 85.87 | 80.17 | 69.23 | 54.40 | t | 34.81 | 67.59 | a | ||||||||||
1962 | 38.94 | 48.50 | 51.68 | 72.03 | 73.67 | a | 85.47 | 89.42 | 89.97 | 82.00 | 71.87 | 55.88 | f | 46.10 | 68.15 | a | ||||||||||
1963 | 35.97 | 50.75 | 53.97 | 65.92 | e | 80.74 | 91.30 | t | 93.48 | j | 88.68 | l | 83.80 | t | 74.57 | h | 56.59 | h | 44.52 | j | 57.47 | g | ||||
1964 | 43.54 | g | 43.45 | i | 49.75 | g | 53.84 | e | 72.35 | n | 82.10 | i | 93.24 | n | 85.95 | k | 79.33 | i | 75.55 | i | 49.39 | l | 42.71 | n | 53.84 | k |
1965 | 44.25 | w | 44.72 | j | 50.05 | l | ----- | z | ----- | z | 81.70 | 89.06 | 89.10 | a | 78.10 | 74.29 | 58.30 | 42.97 | 73.36 | e | ||||||
1966 | 40.03 | 39.71 | 68.03 | a | 67.63 | 79.53 | a | 86.57 | 92.03 | 90.00 | 80.43 | 69.23 | 59.13 | 49.09 | i | 70.21 | a | |||||||||
1967 | 44.30 | h | 52.68 | 61.48 | 63.72 | a | 74.61 | 78.40 | 91.87 | 90.23 | 78.67 | 73.58 | 59.60 | 36.45 | b | 69.21 | a | |||||||||
1968 | ----- | z | 50.86 | 56.19 | 61.90 | 75.55 | 89.83 | a | 88.81 | 84.29 | 81.33 | 71.00 | 53.50 | 37.77 | 68.28 | a | ||||||||||
1969 | 43.23 | 44.68 | 51.97 | b | 71.10 | 79.74 | 86.75 | r | ----- | z | 88.88 | n | 81.23 | 62.27 | a | 52.83 | 46.94 | 59.33 | c | |||||||
1970 | 42.03 | 50.04 | 50.71 | 61.37 | 82.03 | 83.07 | 91.48 | ----- | z | ----- | z | 61.17 | y | 59.77 | 44.81 | 62.81 | c | |||||||||
1971 | 44.58 | 49.54 | 58.60 | a | 62.00 | 70.79 | b | 76.00 | b | 83.74 | 80.41 | d | ----- | z | 56.23 | 48.40 | 35.83 | a | 60.56 | a | ||||||
1972 | 43.35 | 47.63 | b | 67.00 | 65.67 | 67.23 | 70.43 | g | 74.92 | f | 69.28 | m | 63.26 | k | 46.71 | c | 35.63 | 28.53 | l | 53.32 | e | |||||
1973 | 18.81 | o | ----- | z | 35.62 | j | 46.18 | m | 55.53 | n | ----- | z | 68.25 | w | 69.45 | k | 59.83 | r | ----- | z | 41.17 | l | 28.83 | m | ----- | z |
1974 | 26.94 | o | ----- | z | 57.14 | j | 64.41 | h | 80.23 | i | 84.33 | l | 90.64 | i | 85.14 | i | 85.21 | k | 75.00 | i | 53.89 | k | 42.00 | j | ----- | z |
1975 | 32.78 | m | 50.79 | i | ----- | z | ----- | z | 79.45 | i | 87.90 | i | 95.83 | h | 90.86 | j | 77.45 | j | 80.71 | j | 53.88 | m | 46.67 | j | ----- | z |
1976 | 42.33 | j | 51.60 | i | 62.43 | h | 62.41 | h | 77.85 | k | 85.73 | h | 94.41 | i | 97.82 | i | 83.91 | h | 73.89 | v | 41.33 | x | 43.56 | f | ----- | z |
1977 | 36.84 | f | 52.56 | l | 54.92 | g | 70.30 | j | 73.47 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.13 | p | ----- | z |
1978 | 42.38 | b | 45.50 | d | 62.12 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.94 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.68 | 48.42 | 57.44 | 67.09 | 77.47 | 87.76 | 91.96 | 89.08 | 82.75 | 69.54 | 54.36 | 43.58 | 68.36 | |||||||||||||
S.D. | 4.82 | 4.78 | 4.58 | 4.23 | 3.76 | 3.88 | 2.68 | 2.56 | 2.87 | 5.32 | 5.55 | 5.43 | 1.73 | |||||||||||||
SKEW | -0.58 | -0.35 | 0.34 | -0.36 | -0.26 | -0.79 | -0.78 | -1.20 | 0.06 | -2.05 | -0.86 | 0.43 | 0.86 | |||||||||||||
MAX | 49.94 | 58.39 | 68.03 | 76.13 | 84.29 | 93.40 | 96.40 | 92.00 | 88.83 | 79.42 | 65.03 | 60.74 | 71.74 | |||||||||||||
MIN | 29.42 | 37.43 | 49.13 | 53.84 | 67.23 | 76.00 | 83.74 | 80.41 | 78.10 | 46.71 | 35.63 | 32.42 | 66.34 | |||||||||||||
YRS | 42 | 50 | 49 | 46 | 46 | 42 | 43 | 45 | 46 | 42 | 47 | 45 | 16 |