YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.00 | d | 74.23 | 68.30 | 64.87 | 71.10 | h | |||
1919 | 66.65 | 60.54 | 62.53 | a | 64.00 | 64.87 | 70.56 | c | 71.16 | 70.58 | 70.20 | 67.97 | 68.10 | 68.61 | 67.15 | |||||||||||
1920 | 64.58 | 67.69 | 65.16 | 68.90 | 68.45 | 73.13 | 73.84 | 76.94 | 74.73 | 70.61 | 65.67 | 62.84 | 69.38 | |||||||||||||
1921 | 59.74 | 63.68 | 64.16 | 63.73 | 62.03 | 66.37 | 72.10 | 71.03 | 70.33 | 73.74 | 75.07 | 70.90 | 67.74 | |||||||||||||
1922 | ----- | z | ----- | z | ----- | z | 64.50 | 67.55 | 71.70 | 73.26 | 76.23 | 76.63 | 72.74 | 69.40 | 65.48 | 70.83 | c | |||||||||
1923 | 66.35 | 64.50 | 68.97 | 66.03 | 70.55 | 69.23 | 72.65 | 73.39 | 74.20 | 73.55 | 73.97 | 66.81 | 70.02 | |||||||||||||
1924 | 67.10 | 69.24 | 65.77 | 67.53 | 69.03 | 71.13 | 72.74 | 72.68 | 72.37 | 68.48 | 70.43 | 64.35 | 69.24 | |||||||||||||
1925 | 64.68 | 63.46 | 65.77 | 64.87 | 67.48 | 70.33 | 75.61 | 74.16 | 73.83 | 71.03 | 70.33 | 71.00 | 69.38 | |||||||||||||
1926 | 68.71 | 68.00 | 72.39 | 68.67 | 69.87 | 71.17 | 73.26 | 75.90 | 73.80 | 72.87 | 72.50 | 63.94 | 70.92 | |||||||||||||
1927 | 64.10 | 62.36 | 64.61 | 64.40 | 67.90 | 68.20 | 73.06 | 72.77 | 72.60 | 71.87 | 71.40 | 63.74 | 68.09 | |||||||||||||
1928 | 68.48 | 67.97 | 64.84 | 65.57 | 67.94 | 69.33 | 70.45 | 71.29 | 71.97 | 67.87 | 68.83 | 65.52 | 68.34 | |||||||||||||
1929 | 63.42 | 62.57 | 63.45 | 62.97 | 69.71 | 71.23 | 74.68 | 77.00 | a | 75.57 | 74.87 | 71.33 | 68.55 | 69.61 | ||||||||||||
1930 | 62.35 | 66.75 | 68.52 | 70.00 | 67.13 | 71.27 | 74.35 | 78.42 | s | 71.33 | 73.81 | 69.27 | 65.35 | 69.10 | a | |||||||||||
1931 | 64.45 | 64.57 | 70.68 | 70.63 | 71.03 | 74.46 | b | 81.03 | 78.00 | 75.57 | 74.61 | 64.70 | 60.65 | 70.87 | ||||||||||||
1932 | 59.81 | 61.72 | 66.68 | 68.17 | 68.13 | a | 70.50 | 71.29 | 71.19 | 69.77 | 69.65 | 72.23 | 59.71 | 67.40 | ||||||||||||
1933 | 59.74 | 60.46 | 63.06 | 63.40 | 64.45 | 69.40 | 72.10 | 72.65 | 67.80 | 69.52 | 71.67 | 61.68 | 66.33 | |||||||||||||
1934 | 65.58 | 63.93 | 69.94 | 68.37 | 71.32 | 70.23 | 75.58 | 72.84 | 75.77 | 71.00 | 65.90 | 64.65 | 69.59 | |||||||||||||
1935 | 61.06 | 64.93 | 60.03 | 65.60 | 67.61 | 68.37 | 72.35 | 75.90 | 71.70 | 69.94 | 66.17 | 63.65 | 67.28 | |||||||||||||
1936 | 64.81 | 61.97 | 63.45 | 65.53 | 70.97 | 73.27 | 79.61 | 78.70 | a | 74.93 | 71.03 | 75.17 | 65.39 | 70.40 | ||||||||||||
1937 | 54.58 | 60.36 | 64.65 | 67.70 | 70.68 | 69.83 | 73.57 | a | 74.52 | 74.90 | 71.97 | 64.47 | 66.84 | 67.84 | ||||||||||||
1938 | 67.32 | 63.25 | 64.81 | 67.80 | 67.61 | 70.07 | 72.23 | 76.52 | 76.37 | 70.10 | 66.03 | 65.26 | 68.95 | |||||||||||||
1939 | 61.53 | a | 57.68 | 59.47 | a | 66.37 | 66.87 | 70.13 | 72.65 | 73.77 | 80.13 | 75.97 | 70.70 | 66.61 | 68.49 | |||||||||||
1940 | 63.23 | 63.55 | 65.58 | 66.90 | 69.77 | 68.96 | b | 74.15 | d | 72.81 | 72.57 | 72.13 | 68.37 | 65.81 | 68.65 | |||||||||||
1941 | 62.55 | 63.93 | 66.55 | 65.67 | 73.67 | a | 71.17 | 73.16 | 74.39 | 71.27 | 72.13 | 70.17 | 63.29 | 68.99 | ||||||||||||
1942 | 65.39 | 61.46 | 66.74 | 66.47 | 69.31 | b | 70.10 | 74.35 | 73.43 | a | 72.59 | a | 73.94 | 69.17 | 64.48 | 68.95 | ||||||||||
1943 | 63.81 | 67.39 | 64.55 | 66.80 | 71.86 | c | 73.00 | 74.87 | 75.52 | j | 77.00 | a | 73.33 | a | 72.17 | a | 66.47 | a | 70.11 | a | ||||||
1944 | 66.42 | 62.66 | 69.39 | ----- | z | 69.42 | 71.00 | b | 72.06 | 74.26 | 73.30 | 68.77 | 66.50 | 66.52 | 69.12 | a | ||||||||||
1945 | 63.32 | 63.48 | c | 63.10 | a | 65.87 | 68.90 | 70.53 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.87 | f | ||||
1946 | 63.72 | b | 61.54 | 62.72 | b | 66.33 | 65.19 | 72.53 | 74.61 | 74.93 | b | 78.33 | 70.35 | 64.73 | 60.32 | 67.94 | ||||||||||
1947 | 61.65 | 64.82 | 65.97 | 69.03 | a | 68.84 | 71.20 | 77.06 | 75.03 | 75.76 | a | 70.32 | 64.03 | 63.23 | 68.91 | |||||||||||
1948 | 62.74 | 60.28 | 60.61 | 66.00 | 67.37 | a | 68.67 | 71.39 | 70.97 | 72.67 | 68.68 | 67.77 | 59.81 | 66.41 | ||||||||||||
1949 | 53.81 | 58.25 | 59.87 | 67.80 | 68.68 | 71.87 | 72.13 | 75.39 | 75.37 | 70.19 | 73.13 | 61.65 | 67.34 | |||||||||||||
1950 | 55.87 | 59.89 | 62.97 | 66.33 | 64.17 | a | 69.23 | 73.26 | 72.39 | 71.60 | 71.81 | 69.17 | 66.87 | a | 66.96 | |||||||||||
1951 | 61.48 | 60.64 | 66.00 | 64.07 | 65.16 | 69.17 | 73.87 | 71.97 | 71.77 | 73.52 | 66.87 | 60.13 | 67.05 | |||||||||||||
1952 | 58.65 | 60.53 | j | 59.97 | 65.83 | 68.03 | 67.73 | 71.29 | 73.90 | 76.67 | 68.45 | 65.56 | e | 61.97 | 67.10 | a | ||||||||||
1953 | 67.10 | 67.18 | 62.90 | 61.30 | 69.13 | 69.67 | 75.10 | 72.65 | 71.83 | 74.16 | 69.10 | 65.84 | 68.83 | |||||||||||||
1954 | 60.61 | 70.25 | 61.39 | 63.60 | 67.39 | 70.20 | 77.19 | 75.03 | 73.37 | 67.94 | 70.90 | 63.94 | 68.48 | |||||||||||||
1955 | 58.87 | 62.22 | a | 64.94 | 65.50 | 66.55 | 69.17 | 72.13 | 73.84 | 77.21 | a | 67.71 | 67.17 | 60.16 | 67.12 | |||||||||||
1956 | 60.55 | 58.83 | 65.90 | 63.67 | 68.38 | b | 71.73 | 70.77 | 74.34 | b | 81.13 | 68.42 | 75.57 | 67.81 | 68.93 | |||||||||||
1957 | 60.74 | 64.75 | 65.06 | 64.48 | a | 67.19 | 74.93 | c | 77.32 | 78.23 | a | 74.87 | 70.77 | 65.63 | 66.90 | 69.24 | ||||||||||
1958 | 65.52 | 63.75 | 62.19 | 70.93 | a | 69.52 | 72.40 | 73.58 | 75.45 | 79.40 | 77.90 | a | 68.00 | 68.81 | 70.62 | |||||||||||
1959 | 64.68 | 61.70 | a | 69.97 | 69.03 | 68.23 | 73.10 | 78.55 | 76.71 | 76.91 | h | 72.12 | e | 72.48 | a | 66.00 | 70.23 | a | ||||||||
1960 | 59.91 | h | 61.03 | 64.93 | c | 68.77 | 71.77 | 71.30 | 75.81 | 74.26 | 77.77 | 71.39 | 65.00 | 64.97 | 69.73 | a | ||||||||||
1961 | 68.29 | 65.96 | c | 63.55 | 67.40 | 66.65 | 70.00 | 74.90 | 74.29 | 73.83 | a | 71.23 | 64.97 | 60.55 | 68.47 | |||||||||||
1962 | 63.55 | 58.07 | 59.97 | 68.30 | 66.94 | 67.50 | 70.23 | 75.16 | 72.53 | 69.65 | 64.63 | 61.74 | 66.52 | |||||||||||||
1963 | 60.74 | 66.57 | 63.26 | 63.30 | 67.77 | 69.83 | 72.58 | 74.94 | 79.43 | b | 72.45 | 67.80 | 67.00 | 68.81 | ||||||||||||
1964 | 62.42 | 66.00 | 63.45 | 65.87 | 64.32 | 67.23 | 73.58 | 73.90 | ----- | z | ----- | z | ----- | z | ----- | z | 67.10 | d | ||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 62.97 | 63.41 | 64.68 | 66.31 | 68.16 | 70.48 | 73.81 | 74.29 | 74.36 | 71.44 | 68.90 | 64.68 | 68.52 | |||||||||||||
S.D. | 3.48 | 3.07 | 3.03 | 2.18 | 2.28 | 1.83 | 2.36 | 2.00 | 2.96 | 2.37 | 3.19 | 2.88 | 1.23 | |||||||||||||
SKEW | -0.61 | 0.19 | 0.43 | 0.07 | -0.21 | 0.20 | 1.06 | 0.18 | 0.25 | 0.37 | 0.33 | 0.03 | 0.07 | |||||||||||||
MAX | 68.71 | 70.25 | 72.39 | 70.93 | 73.67 | 74.93 | 81.03 | 78.70 | 81.13 | 77.90 | 75.57 | 71.00 | 70.92 | |||||||||||||
MIN | 53.81 | 57.68 | 59.47 | 61.30 | 62.03 | 66.37 | 70.23 | 70.58 | 67.80 | 67.71 | 64.03 | 59.71 | 66.33 | |||||||||||||
YRS | 44 | 44 | 45 | 45 | 46 | 46 | 45 | 43 | 44 | 45 | 45 | 45 | 37 |