YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.26 | 72.46 | b | ----- | z | 74.86 | j | |
1916 | 59.97 | 67.97 | 71.48 | 74.21 | b | 74.65 | 75.80 | 77.94 | 81.44 | d | 76.83 | 70.77 | 70.67 | 63.35 | 72.09 | |||||||||||
1917 | 60.16 | 66.25 | 69.10 | 70.27 | 69.29 | 78.69 | a | 81.87 | 82.06 | 83.97 | 78.03 | 74.67 | 73.55 | 73.99 | ||||||||||||
1918 | 65.06 | 66.79 | 70.52 | 73.97 | 72.13 | 80.90 | 82.35 | 83.93 | a | 84.97 | 80.35 | 70.23 | 66.90 | 74.84 | ||||||||||||
1919 | 70.00 | 63.04 | 66.87 | 71.60 | 71.84 | 81.21 | b | 82.13 | 82.32 | 80.97 | 74.68 | 71.34 | a | 68.32 | 73.69 | |||||||||||
1920 | 65.90 | 66.21 | 66.71 | 70.80 | 71.94 | 77.13 | 82.71 | 83.61 | 82.03 | 74.13 | 70.23 | 66.16 | 73.13 | |||||||||||||
1921 | 63.94 | 68.25 | 70.58 | 72.57 | 68.23 | 75.03 | 80.61 | 81.19 | 80.00 | 75.23 | 73.50 | 68.52 | 73.14 | |||||||||||||
1922 | 62.30 | a | 63.86 | 65.97 | 68.47 | 74.13 | 77.57 | 80.94 | 84.00 | 84.63 | 76.13 | 69.43 | 66.16 | 72.80 | ||||||||||||
1923 | 66.94 | 66.04 | 72.32 | 68.90 | 76.39 | 74.30 | 80.19 | 79.58 | 81.57 | 77.06 | 77.03 | 66.35 | 73.89 | |||||||||||||
1924 | 68.23 | 72.93 | 67.48 | 69.60 | 73.87 | 79.53 | 80.00 | 79.35 | 81.53 | 72.84 | 73.93 | 63.97 | 73.61 | |||||||||||||
1925 | 66.65 | 67.54 | 68.61 | 69.97 | 73.06 | 76.73 | 82.29 | 81.71 | 79.70 | 72.10 | 71.73 | 69.48 | 73.30 | |||||||||||||
1926 | 68.06 | 71.00 | 73.39 | 72.17 | 75.19 | 77.53 | 80.68 | 81.39 | 77.40 | 76.35 | 78.07 | 62.13 | 74.45 | |||||||||||||
1927 | 63.97 | 64.43 | 66.29 | 69.90 | 74.39 | 75.37 | 83.13 | 82.03 | 77.80 | 75.07 | a | 74.60 | 65.47 | a | 72.70 | |||||||||||
1928 | 70.26 | 69.03 | 69.84 | 71.73 | 71.39 | 72.60 | 75.97 | 77.29 | 79.13 | 73.16 | 74.37 | 68.03 | 72.73 | |||||||||||||
1929 | 63.87 | 63.68 | 65.71 | 66.10 | 74.26 | 76.40 | 78.58 | 82.97 | 77.28 | a | 79.39 | 77.80 | 74.00 | 73.34 | ||||||||||||
1930 | 64.81 | 69.04 | 69.45 | 72.33 | 68.61 | 73.47 | 81.10 | 79.39 | 75.87 | 78.74 | 76.40 | 70.65 | 73.32 | |||||||||||||
1931 | 69.06 | 67.79 | 74.10 | 73.10 | 74.58 | 77.87 | 83.00 | 84.41 | b | 81.43 | 78.13 | 67.43 | 63.58 | 74.54 | ||||||||||||
1932 | 62.70 | a | 64.72 | 70.20 | a | 73.13 | 71.50 | a | 73.53 | 75.81 | 77.32 | 76.03 | 74.87 | a | 78.30 | 64.48 | 71.88 | |||||||||
1933 | 62.55 | 63.39 | 68.48 | 66.30 | 65.94 | 71.43 | 75.77 | 77.13 | 72.73 | 73.52 | 77.00 | 66.58 | 70.07 | |||||||||||||
1934 | 70.06 | 69.18 | 74.52 | 73.70 | 75.55 | 72.55 | a | 79.87 | 78.45 | 81.53 | 77.45 | 73.13 | 69.16 | 74.60 | ||||||||||||
1935 | 65.00 | 67.36 | 62.94 | 70.57 | 71.23 | 73.50 | 79.84 | 82.35 | 79.07 | 76.58 | 70.20 | 70.03 | 72.39 | |||||||||||||
1936 | 69.26 | 65.48 | 67.45 | 69.93 | 74.74 | 76.10 | 80.94 | 82.03 | 79.77 | 75.90 | 78.23 | 69.00 | a | 74.07 | ||||||||||||
1937 | 57.65 | 63.86 | 66.39 | 70.24 | a | 71.78 | h | 76.42 | f | 79.19 | 78.94 | 81.20 | 77.42 | 71.73 | 72.32 | 71.89 | b | |||||||||
1938 | 70.90 | 66.43 | 66.00 | 70.60 | 72.74 | 71.93 | 77.03 | 79.77 | 84.30 | 75.65 | 74.90 | 71.55 | 73.48 | |||||||||||||
1939 | 65.58 | 62.46 | 64.39 | 72.53 | 73.06 | 75.97 | 78.68 | 81.03 | 84.13 | 81.68 | 76.27 | 73.55 | 74.11 | |||||||||||||
1940 | 67.29 | 67.79 | 72.06 | 73.73 | 74.84 | 74.40 | 80.52 | 78.81 | 80.17 | 78.77 | 74.50 | 72.35 | 74.60 | |||||||||||||
1941 | 66.97 | 68.79 | 69.87 | 68.13 | 77.19 | 74.03 | 79.39 | 79.68 | 77.33 | 76.10 | 75.63 | 66.26 | 73.28 | |||||||||||||
1942 | 69.77 | 66.89 | 69.52 | 68.53 | 71.84 | 72.30 | 78.45 | 77.90 | 76.83 | 76.32 | 72.33 | 68.06 | 72.40 | |||||||||||||
1943 | 67.29 | 70.57 | ----- | z | 70.73 | 75.10 | 75.10 | 80.00 | 80.13 | 80.70 | 75.39 | 76.30 | 66.90 | 74.38 | a | |||||||||||
1944 | 67.10 | 63.55 | 69.19 | 67.57 | 71.65 | 71.07 | 74.61 | 78.97 | 75.03 | 74.19 | 68.30 | 70.48 | 70.98 | |||||||||||||
1945 | 65.35 | 65.64 | 65.03 | 68.70 | 70.94 | 71.97 | 77.13 | 79.84 | 81.17 | 77.58 | 74.20 | 67.65 | 72.10 | |||||||||||||
1946 | 68.06 | 65.64 | 66.90 | 71.93 | 71.32 | 76.30 | 79.13 | 80.87 | 82.57 | 75.26 | 68.63 | 66.35 | 72.75 | |||||||||||||
1947 | 66.81 | 70.89 | 70.32 | 73.60 | 72.13 | 75.13 | 80.94 | 80.65 | 81.63 | 76.61 | 69.93 | 67.35 | 73.83 | |||||||||||||
1948 | 69.52 | 64.48 | 65.61 | 71.90 | 71.71 | 72.50 | 76.45 | 76.42 | 78.90 | 73.42 | 75.00 | 64.00 | 71.66 | |||||||||||||
1949 | 56.97 | 61.54 | 64.97 | 72.27 | 72.39 | 76.03 | a | 77.00 | 80.23 | 80.50 | 76.52 | 79.10 | 67.26 | 72.06 | ||||||||||||
1950 | 61.32 | 65.36 | 67.77 | 69.90 | 69.00 | 71.90 | 77.39 | 78.06 | 76.27 | 78.42 | 74.27 | 73.00 | 71.89 | |||||||||||||
1951 | 66.10 | 66.07 | 69.19 | 67.47 | 69.52 | 72.93 | 77.32 | 77.58 | 76.70 | 76.90 | 71.90 | 64.26 | 71.33 | |||||||||||||
1952 | 62.90 | 68.03 | 64.61 | 68.50 | 74.42 | 72.60 | 79.13 | 81.23 | 83.50 | 76.87 | 69.70 | 66.42 | 72.33 | |||||||||||||
1953 | 72.39 | 70.39 | 68.77 | 67.40 | 73.81 | 73.77 | 80.72 | f | 79.13 | 79.63 | 81.55 | 76.40 | 71.94 | 74.11 | a | |||||||||||
1954 | 65.23 | 73.96 | 66.11 | c | 68.70 | 72.06 | 73.87 | 82.10 | 80.45 | 81.10 | 75.84 | 76.00 | 70.48 | 73.82 | ||||||||||||
1955 | 64.06 | 67.04 | 69.65 | 71.60 | 70.19 | 72.17 | l | 76.03 | 82.32 | 83.79 | a | 72.87 | 71.03 | 66.06 | 72.24 | a | ||||||||||
1956 | 65.39 | 63.72 | 69.94 | 65.39 | l | ----- | z | 76.36 | e | 78.71 | 79.35 | 87.07 | 76.48 | 81.53 | 74.42 | 75.30 | b | |||||||||
1957 | 63.94 | 68.61 | 68.84 | 70.27 | 71.74 | 78.17 | a | 82.87 | 83.70 | a | 80.97 | 75.03 | 72.50 | 73.26 | 74.16 | |||||||||||
1958 | 71.74 | 69.36 | 66.52 | 74.07 | 77.06 | 76.70 | 80.00 | 82.55 | 84.63 | 84.00 | a | 74.97 | a | 76.23 | 76.48 | |||||||||||
1959 | 72.32 | 67.52 | a | 75.19 | 74.70 | 72.77 | 77.63 | 84.16 | 83.29 | 81.37 | 77.61 | 79.60 | 70.90 | 76.42 | ||||||||||||
1960 | 65.16 | 65.93 | 70.74 | 75.13 | 76.70 | a | 77.23 | 82.61 | 82.55 | 84.63 | 79.16 | 71.87 | 69.90 | 75.14 | ||||||||||||
1961 | 75.45 | 72.61 | 68.19 | 74.00 | 70.84 | 75.83 | 79.35 | 82.55 | 81.13 | 78.58 | 71.30 | 66.58 | 74.70 | |||||||||||||
1962 | 68.81 | 63.14 | 64.84 | 73.13 | 71.55 | 72.87 | 77.48 | 81.03 | 78.97 | 75.87 | 70.07 | 67.57 | a | 72.11 | ||||||||||||
1963 | 65.61 | 72.96 | 68.16 | 69.43 | 72.26 | 73.43 | 77.71 | 81.00 | 86.23 | 78.55 | 72.33 | 73.77 | 74.29 | |||||||||||||
1964 | 67.77 | 70.83 | 68.23 | 70.20 | 70.10 | 72.80 | 78.61 | 78.87 | 79.20 | 81.06 | 72.17 | 65.29 | 72.93 | |||||||||||||
1965 | 69.65 | 69.46 | 68.26 | 71.40 | 70.81 | 69.87 | 75.39 | 81.06 | 78.37 | 83.39 | 70.87 | 66.26 | 72.90 | |||||||||||||
1966 | 66.03 | 66.93 | 69.03 | 71.93 | 71.68 | 74.97 | 79.71 | 81.74 | 80.20 | 79.71 | 72.30 | 68.48 | 73.56 | |||||||||||||
1967 | 68.74 | 73.00 | 68.27 | p | 65.43 | 74.10 | 71.83 | 78.48 | 83.77 | 82.17 | 84.39 | 73.65 | m | 66.23 | 74.81 | b | ||||||||||
1968 | 68.77 | 70.21 | 70.77 | 72.87 | 72.15 | k | 79.86 | p | ----- | z | 85.90 | u | 83.50 | 80.39 | 73.83 | 70.31 | o | 74.33 | e | |||||||
1969 | 67.19 | 63.68 | 68.16 | 72.53 | ----- | z | 71.60 | 79.77 | 83.90 | ----- | z | ----- | z | ----- | z | 66.13 | 71.62 | d | ||||||||
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.17 | 65.74 | 67.95 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 66.42 | 67.25 | 68.56 | 70.91 | 72.53 | 74.87 | 79.44 | 80.78 | 80.53 | 77.02 | 73.53 | 68.39 | 73.30 | |||||||||||||
S.D. | 3.62 | 3.04 | 2.69 | 2.36 | 2.37 | 2.58 | 2.31 | 2.06 | 3.04 | 2.91 | 3.17 | 3.32 | 1.29 | |||||||||||||
SKEW | -0.29 | 0.31 | 0.37 | -0.32 | -0.19 | 0.40 | -0.06 | -0.16 | -0.14 | 0.49 | 0.33 | 0.42 | 0.13 | |||||||||||||
MAX | 75.45 | 73.96 | 75.19 | 75.13 | 77.19 | 81.21 | 84.16 | 84.41 | 87.07 | 84.39 | 81.53 | 76.23 | 76.48 | |||||||||||||
MIN | 56.97 | 61.54 | 62.94 | 65.43 | 65.94 | 69.87 | 74.61 | 76.42 | 72.73 | 70.77 | 67.43 | 62.13 | 70.07 | |||||||||||||
YRS | 54 | 54 | 52 | 53 | 50 | 51 | 52 | 53 | 53 | 54 | 54 | 54 | 46 |