YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1897 | 53.16 | 51.09 | 51.29 | 62.02 | ----- | z | 66.77 | 71.06 | 74.27 | 70.80 | 60.76 | 60.50 | 54.19 | 61.45 | a | |||||||||||
1898 | 48.89 | 56.59 | 53.87 | 63.10 | 59.08 | 67.77 | 72.42 | 75.66 | 73.13 | 66.42 | 60.12 | 53.97 | 62.58 | |||||||||||||
1899 | 53.66 | 53.55 | 54.77 | 59.70 | 59.26 | 66.17 | 72.52 | 69.02 | 74.38 | 62.40 | 60.43 | 57.13 | 61.92 | |||||||||||||
1900 | 56.66 | 57.52 | 59.15 | 56.03 | 64.40 | a | 68.52 | 72.53 | 68.54 | c | 66.95 | 63.60 | 64.82 | 58.84 | 63.13 | |||||||||||
1901 | 52.79 | 55.54 | 59.48 | 56.68 | 59.55 | 66.22 | ----- | z | 73.89 | 65.07 | 65.69 | 59.97 | 58.61 | 61.23 | a | |||||||||||
1902 | 54.81 | 53.05 | 52.85 | 57.62 | 61.26 | 67.90 | 70.11 | 69.85 | 70.15 | 62.76 | 56.27 | 53.85 | 60.87 | |||||||||||||
1903 | 55.23 | 50.12 | b | 54.47 | 57.09 | a | 60.56 | 67.37 | 70.68 | 72.45 | 69.77 | 67.40 | 62.68 | 57.20 | a | 62.08 | ||||||||||
1904 | 54.97 | 55.16 | 55.19 | 59.55 | a | 61.97 | 68.88 | 70.94 | 73.95 | 72.22 | a | 66.61 | 64.28 | 57.34 | 63.42 | |||||||||||
1905 | 57.27 | 56.41 | 57.16 | 58.00 | 60.06 | 64.82 | 69.92 | 71.05 | 69.17 | 65.35 | 57.15 | 54.77 | 61.76 | |||||||||||||
1906 | 53.65 | 56.84 | 55.48 | 56.59 | a | 58.48 | 66.93 | 75.97 | 73.18 | 71.57 | 70.73 | 58.53 | 53.73 | 62.64 | ||||||||||||
1907 | 48.95 | 59.77 | 52.66 | b | 58.95 | 61.58 | 66.08 | 74.52 | a | 70.63 | 68.17 | a | 64.79 | 61.27 | 56.56 | 61.99 | ||||||||||
1908 | 54.02 | 51.71 | 57.35 | 61.98 | 60.35 | 64.90 | 74.87 | 73.45 | 71.08 | 63.60 | 57.78 | 52.21 | 61.94 | |||||||||||||
1909 | 52.79 | 51.75 | 52.90 | 59.97 | 60.58 | 67.90 | 71.52 | 76.34 | 70.98 | 64.85 | 57.29 | a | 50.10 | 61.41 | ||||||||||||
1910 | 50.45 | 52.89 | 57.98 | 63.93 | 65.55 | 67.20 | 74.40 | 73.85 | 73.10 | 67.92 | 58.43 | 57.23 | 63.58 | |||||||||||||
1911 | 54.98 | 49.39 | 57.15 | 56.83 | g | 61.81 | 66.43 | 73.65 | 74.45 | 69.80 | c | 65.90 | 60.26 | a | 51.98 | 62.35 | a | |||||||||
1912 | 56.60 | 58.33 | e | 51.95 | 54.87 | 62.80 | c | 66.65 | 71.73 | 69.29 | n | 69.98 | 63.37 | 61.75 | 52.90 | 60.99 | a | |||||||||
1913 | 49.74 | b | 51.45 | 55.97 | 59.32 | 61.98 | 64.57 | a | 72.58 | 76.15 | 74.85 | 67.00 | 58.19 | a | 52.88 | c | 62.06 | |||||||||
1914 | 52.91 | b | 55.84 | 61.42 | 61.15 | 60.08 | 66.33 | 70.06 | 70.39 | 69.73 | 67.29 | 64.47 | 50.50 | 62.51 | ||||||||||||
1915 | 52.53 | 53.21 | 59.93 | b | 59.25 | 61.06 | 68.87 | 72.11 | 75.29 | 69.23 | 65.98 | a | 58.48 | 52.95 | b | 62.41 | ||||||||||
1916 | 47.87 | 57.55 | 60.85 | a | 61.92 | 62.45 | a | 65.72 | a | 70.19 | j | 71.74 | 68.37 | 58.19 | 58.12 | 49.81 | 60.24 | a | ||||||||
1917 | 47.94 | 52.43 | 55.05 | a | 57.33 | 57.60 | 72.24 | g | 75.27 | 72.85 | a | 71.77 | q | 66.79 | c | 61.93 | 61.58 | 60.88 | b | |||||||
1918 | 53.94 | 52.78 | a | 57.47 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.73 | i | ||
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 | 70.28 | 69.82 | 64.73 | 53.26 | 64.52 | h | ||||
1928 | 59.40 | 58.66 | 59.55 | 63.42 | 65.31 | 65.97 | 71.63 | 73.00 | 76.05 | 65.11 | 62.63 | 57.23 | 64.83 | |||||||||||||
1929 | 53.45 | 52.82 | 56.26 | 55.45 | 65.11 | 68.57 | a | 74.52 | 79.29 | 71.72 | 71.76 | 67.33 | 64.34 | 65.05 | ||||||||||||
1930 | 53.89 | 59.98 | 58.39 | 62.47 | 60.69 | 68.02 | 75.52 | 75.94 | 68.07 | 68.94 | 65.57 | b | 58.94 | 64.70 | ||||||||||||
1931 | 58.11 | 57.75 | 64.13 | 64.75 | 66.52 | 69.50 | 78.45 | 77.26 | 72.48 | 68.18 | 57.73 | 52.82 | 65.64 | |||||||||||||
1932 | 51.21 | 54.03 | 60.19 | 61.70 | 62.69 | 67.17 | 71.29 | 72.89 | 70.55 | 67.13 | 69.32 | 52.88 | b | 63.42 | ||||||||||||
1933 | 53.06 | 54.70 | 59.24 | 57.85 | 59.21 | 67.03 | 73.15 | 73.39 | 68.12 | a | 69.66 | 68.33 | 57.62 | b | 63.45 | |||||||||||
1934 | 60.23 | 57.66 | 65.98 | 64.97 | 68.44 | 65.25 | 75.27 | 74.03 | 75.22 | 68.82 | 62.70 | 60.38 | b | 66.58 | ||||||||||||
1935 | 56.74 | 60.14 | 54.06 | 59.30 | 61.92 | 68.48 | 74.31 | 77.50 | 73.73 | 67.15 | 61.92 | 59.35 | 64.55 | |||||||||||||
1936 | 59.45 | 55.12 | 59.66 | 61.37 | 66.94 | 71.83 | 77.42 | 77.21 | 74.55 | 69.02 | 68.62 | 58.35 | 66.63 | |||||||||||||
1937 | 45.85 | 54.86 | 58.31 | 62.37 | 64.63 | 69.23 | 75.84 | 76.03 | 76.32 | 70.81 | 62.98 | 62.06 | 64.94 | |||||||||||||
1938 | 60.65 | 55.39 | 56.37 | 60.83 | 64.66 | 66.98 | 73.79 | 77.73 | 77.77 | 68.27 | 63.27 | 61.66 | 65.61 | |||||||||||||
1939 | 55.87 | 52.34 | 56.02 | 63.47 | 63.69 | 69.62 | 74.20 | a | 77.02 | 77.64 | b | 71.37 | 66.55 | 63.89 | 65.97 | |||||||||||
1940 | 57.87 | 57.88 | 61.35 | 61.80 | 67.24 | 68.55 | 75.06 | 74.55 | 73.07 | 70.73 | 63.23 | 60.74 | 66.01 | |||||||||||||
1941 | 56.50 | 57.09 | 59.24 | 57.68 | 67.39 | 67.25 | 78.73 | r | 73.96 | c | 70.75 | 67.27 | 67.80 | 56.40 | a | 63.76 | a | |||||||||
1942 | 59.18 | 55.98 | 59.97 | 58.63 | 64.23 | 68.25 | 76.08 | 73.94 | 71.88 | b | 69.12 | a | 65.80 | b | 59.98 | a | 65.25 | |||||||||
1943 | 57.82 | c | 60.36 | 57.05 | b | 60.93 | c | 65.96 | d | 68.04 | g | 73.90 | a | 74.29 | e | 76.36 | b | 69.91 | c | ----- | z | 56.88 | a | 65.35 | b | |
1944 | 57.27 | c | 49.62 | e | 55.73 | e | 56.98 | d | 61.12 | e | 62.38 | b | ----- | z | 77.26 | h | 73.30 | 66.79 | b | 59.21 | a | 61.64 | b | 60.40 | b | |
1945 | 57.44 | 55.16 | 53.95 | a | 59.70 | 62.67 | b | 65.33 | a | 74.27 | g | 77.77 | g | 76.21 | a | 69.32 | f | 63.60 | 58.57 | a | 61.40 | c | ||||
1946 | 58.50 | 55.30 | 57.82 | a | 62.58 | 61.08 | 71.57 | 75.77 | 77.22 | d | 77.60 | a | 66.65 | 59.83 | 57.23 | 65.10 | ||||||||||
1947 | 57.42 | 61.39 | 60.13 | 63.55 | 65.34 | b | 67.75 | b | 77.37 | 75.52 | a | 76.87 | c | 69.05 | 61.61 | b | 58.44 | e | 66.20 | |||||||
1948 | ----- | z | 55.70 | a | 55.12 | a | 63.10 | d | 63.32 | a | 67.15 | 72.50 | c | 72.72 | b | 79.45 | t | 66.02 | 62.54 | d | 52.75 | g | 64.24 | c | ||
1949 | 44.96 | g | 49.92 | b | 53.29 | e | 62.27 | 62.80 | d | 68.70 | 70.75 | a | 72.62 | b | 72.92 | 63.73 | 66.26 | c | 52.94 | 63.29 | a | |||||
1950 | 46.24 | ----- | z | 57.45 | 62.59 | b | 61.11 | d | 67.47 | 73.83 | d | 71.70 | f | 68.77 | 70.68 | 64.10 | 63.61 | 63.59 | b | |||||||
1951 | 55.08 | 55.05 | 58.12 | a | 58.50 | 62.45 | 66.24 | a | 74.68 | a | 72.97 | p | 73.98 | 68.95 | 60.21 | a | 52.73 | a | 62.36 | a | ||||||
1952 | 51.69 | 56.53 | 51.97 | 58.15 | 67.05 | c | 64.73 | b | 75.26 | 76.91 | b | ----- | z | ----- | z | 53.74 | m | 54.15 | d | 61.83 | c | |||||
1953 | 60.26 | 58.88 | 57.92 | g | ----- | z | 62.42 | 67.67 | f | 76.57 | a | 73.91 | d | 76.37 | k | 65.84 | i | 63.62 | 59.72 | h | 65.94 | f | ||||
1954 | 54.17 | a | 64.46 | b | 54.32 | a | 59.95 | a | 63.81 | e | 67.07 | g | 76.83 | j | 72.97 | 73.96 | b | 67.87 | 64.96 | c | 58.12 | a | 63.46 | b | ||
1955 | 52.52 | c | 54.79 | b | 59.42 | e | 59.50 | b | 61.67 | g | 66.52 | g | 71.70 | a | 77.72 | f | 75.27 | d | 63.73 | e | 59.82 | b | 54.44 | 61.24 | c | |
1956 | 55.58 | a | 51.97 | 60.27 | e | 56.62 | 62.32 | f | 69.98 | a | 76.15 | r | 71.04 | f | 79.12 | a | 65.35 | d | 68.60 | a | 62.77 | 63.36 | c | |||
1957 | 52.23 | c | 58.96 | 58.27 | a | 56.72 | e | 61.25 | a | 72.06 | c | 75.50 | j | 74.37 | l | 71.97 | a | 63.10 | 58.36 | l | 60.45 | a | 61.67 | c | ||
1958 | 55.02 | b | 53.25 | h | 51.28 | b | 59.27 | d | 64.25 | g | 68.44 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.19 | i |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 54.44 | 55.40 | 57.06 | 60.03 | 62.70 | 67.41 | 73.62 | 74.11 | 72.35 | 66.78 | 62.36 | 56.80 | 63.81 | |||||||||||||
S.D. | 3.63 | 3.29 | 3.22 | 2.61 | 2.62 | 1.93 | 2.18 | 2.44 | 3.22 | 2.89 | 3.45 | 3.83 | 1.72 | |||||||||||||
SKEW | -0.43 | 0.25 | 0.24 | -0.01 | 0.31 | 0.23 | 0.10 | -0.23 | 0.09 | -0.54 | 0.24 | 0.12 | 0.09 | |||||||||||||
MAX | 60.65 | 64.46 | 65.98 | 64.97 | 68.44 | 72.06 | 78.45 | 79.29 | 79.12 | 71.76 | 69.32 | 64.34 | 66.63 | |||||||||||||
MIN | 45.85 | 49.39 | 51.28 | 54.87 | 57.60 | 62.38 | 69.92 | 68.54 | 65.07 | 58.19 | 56.27 | 49.81 | 60.87 | |||||||||||||
YRS | 51 | 51 | 52 | 50 | 48 | 46 | 43 | 43 | 48 | 49 | 49 | 50 | 31 |