YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1917 | 46.00 | e | 57.43 | 67.03 | 75.30 | 78.65 | 98.73 | 102.42 | 97.16 | 92.80 | 86.28 | b | 70.04 | d | 68.83 | h | 79.26 | a | ||||||||
1918 | 68.71 | c | 65.46 | 76.48 | 78.70 | 78.39 | 98.20 | 98.32 | 95.52 | 90.30 | 77.29 | ----- | z | ----- | z | 82.74 | b | |||||||||
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 59.42 | 61.36 | 60.23 | 75.79 | a | 79.00 | 89.93 | 102.77 | 98.23 | 93.27 | 78.35 | 65.30 | 56.55 | 76.68 | ||||||||||||
1946 | 59.23 | 60.50 | 64.90 | 78.53 | 79.77 | 90.27 | 97.06 | 97.77 | 91.67 | 72.71 | 60.00 | 58.45 | 75.91 | |||||||||||||
1947 | 58.10 | a | 66.86 | 71.60 | a | 75.30 | 88.73 | a | 89.14 | a | 99.84 | 95.60 | a | 96.14 | a | 79.13 | 63.33 | 56.67 | a | 78.37 | ||||||
1948 | 65.35 | 59.46 | a | 59.94 | 72.13 | 80.80 | a | 90.60 | 98.74 | 97.94 | 94.13 | 78.84 | 65.43 | 54.90 | 76.52 | |||||||||||
1949 | 44.83 | h | 57.14 | 63.19 | 80.70 | 79.84 | 93.83 | 98.29 | 95.39 | 95.40 | 79.37 | l | 76.27 | 56.68 | 79.67 | b | ||||||||||
1950 | 52.71 | 67.29 | 69.42 | 78.20 | 82.65 | 90.10 | 98.94 | 100.81 | 89.00 | 84.87 | 74.53 | 68.07 | a | 79.71 | ||||||||||||
1951 | 59.61 | 62.57 | 67.97 | 73.60 | 83.29 | 91.47 | 100.29 | 97.87 | 97.70 | 79.04 | d | 65.90 | 53.68 | 77.75 | ||||||||||||
1952 | 51.32 | 60.48 | 56.87 | 73.53 | 86.16 | 84.50 | 98.90 | 99.45 | 92.93 | 88.65 | 63.50 | 56.32 | 76.05 | |||||||||||||
1953 | 63.32 | 62.36 | 68.77 | 73.34 | a | 72.81 | 86.53 | 101.65 | 96.55 | 96.27 | 81.06 | 68.87 | 59.71 | 77.60 | ||||||||||||
1954 | 56.64 | c | 68.96 | 62.23 | 79.67 | 88.35 | 89.20 | 101.10 | 94.65 | 93.03 | 82.90 | 68.90 | 57.45 | 78.59 | ||||||||||||
1955 | 51.67 | a | 57.68 | 68.26 | 68.97 | 78.84 | 88.40 | 96.00 | 100.94 | 94.30 | 83.12 | g | 67.13 | 59.81 | 75.63 | a | ||||||||||
1956 | 62.23 | 60.38 | 69.97 | 71.27 | 79.90 | 93.43 | 96.68 | 95.77 | 96.70 | 77.35 | 65.63 | 57.03 | 77.20 | |||||||||||||
1957 | 50.58 | 64.54 | 66.07 | a | 72.07 | a | 76.19 | 92.47 | 98.45 | 95.42 | 89.67 | 69.16 | 60.80 | 57.77 | 74.43 | |||||||||||
1958 | 58.29 | 62.11 | 57.39 | 71.20 | 85.84 | 88.47 | 95.94 | 99.97 | 92.23 | 84.48 | 68.93 | 67.26 | 77.68 | |||||||||||||
1959 | 61.70 | a | 57.68 | 72.23 | 80.23 | 77.70 | a | 94.20 | 102.58 | 96.77 | 87.17 | 84.03 | 72.30 | 58.71 | 78.78 | |||||||||||
1960 | 54.32 | 59.79 | 72.32 | 75.70 | 83.32 | 98.00 | 101.06 | 98.58 | 95.90 | 80.26 | 65.23 | 60.42 | 78.74 | |||||||||||||
1961 | 62.61 | 65.57 | 66.81 | 77.40 | 76.90 | 97.13 | 101.58 | 97.84 | 87.73 | 78.65 | 63.67 | 56.55 | 77.70 | |||||||||||||
1962 | 57.84 | 57.04 | 61.19 | 80.27 | 76.52 | 90.47 | 96.81 | 97.90 | 93.50 | 80.90 | 71.07 | 63.35 | 77.24 | |||||||||||||
1963 | 58.23 | 69.68 | 63.65 | 65.73 | 80.29 | 83.10 | 96.39 | 94.84 | 91.20 | 78.16 | 64.77 | 61.32 | 75.61 | |||||||||||||
1964 | 56.19 | 61.41 | 62.74 | 69.67 | 77.13 | 87.23 | 98.10 | 97.06 | 90.33 | 85.94 | 58.57 | 58.55 | 75.24 | |||||||||||||
1965 | 60.65 | 63.57 | 64.45 | 68.73 | 77.39 | 84.00 | 96.45 | 96.74 | 83.67 | 86.29 | 65.07 | 53.71 | 75.06 | |||||||||||||
1966 | 55.97 | 57.82 | 70.45 | 79.13 | 84.74 | 91.47 | 96.10 | 98.29 | 90.60 | 80.77 | 66.97 | 56.03 | 77.36 | |||||||||||||
1967 | 59.35 | 65.82 | 65.87 | 60.03 | 80.39 | 86.13 | 99.74 | 100.97 | 89.33 | 82.90 | 69.77 | 52.55 | 76.07 | |||||||||||||
1968 | 58.13 | 66.24 | 67.71 | 73.27 | 81.68 | 92.63 | 97.29 | 92.03 | 90.83 | 79.97 | 67.33 | 53.32 | 76.70 | |||||||||||||
1969 | 59.94 | 55.32 | 65.23 | 72.67 | 85.26 | 86.43 | 97.81 | 101.23 | 93.47 | 74.87 | 66.27 | 60.68 | 76.60 | |||||||||||||
1970 | 59.58 | 64.64 | 66.58 | 69.37 | 83.55 | 91.03 | 101.42 | 100.32 | 89.07 | 77.16 | 67.00 | 53.74 | 76.96 | |||||||||||||
1971 | 58.74 | 63.61 | 68.97 | 71.00 | 75.23 | 89.40 | 99.03 | 99.55 | 89.87 | 74.10 | 65.57 | 51.16 | 75.52 | |||||||||||||
1972 | 56.13 | 66.97 | 76.97 | 75.20 | 82.87 | 91.07 | 99.23 | 96.00 | 87.80 | 80.17 | y | ----- | z | ----- | z | 81.36 | c | |||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 58.02 | 62.32 | 66.52 | 73.89 | 80.74 | 90.59 | 98.97 | 97.57 | 91.87 | 80.15 | 66.72 | 57.79 | 76.96 | |||||||||||||
S.D. | 4.67 | 3.92 | 4.92 | 4.75 | 3.91 | 4.07 | 2.12 | 2.22 | 3.26 | 4.53 | 4.00 | 4.04 | 1.31 | |||||||||||||
SKEW | -0.32 | 0.06 | 0.08 | -0.71 | 0.25 | 0.30 | 0.26 | -0.17 | -0.26 | -0.27 | 0.31 | 0.85 | 0.09 | |||||||||||||
MAX | 68.71 | 69.68 | 76.97 | 80.70 | 88.73 | 98.73 | 102.77 | 101.23 | 97.70 | 88.65 | 76.27 | 68.07 | 79.71 | |||||||||||||
MIN | 46.00 | 55.32 | 56.87 | 60.03 | 72.81 | 83.10 | 95.94 | 92.03 | 83.67 | 69.16 | 58.57 | 51.16 | 74.43 | |||||||||||||
YRS | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 27 | 28 | 27 | 25 |