YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1905 | 67.19 | 66.64 | 73.84 | 81.17 | 91.55 | 105.83 | 109.32 | 106.77 | 99.96 | f | 90.55 | 70.53 | 62.58 | 84.18 | a | |||||||||||
1906 | 66.97 | 72.11 | 78.30 | a | 83.48 | a | 94.39 | 105.53 | 108.97 | 102.33 | a | 101.03 | 90.81 | 75.87 | 67.03 | 87.23 | ||||||||||
1907 | 64.93 | a | 73.86 | 76.97 | a | 88.00 | a | 92.45 | b | 100.67 | 106.26 | 104.39 | 103.60 | 88.55 | 77.57 | 71.39 | 87.38 | |||||||||
1908 | 70.32 | 70.72 | 79.63 | a | 87.13 | 92.00 | 102.93 | 107.71 | 104.19 | 100.87 | 86.52 | 78.63 | 66.77 | 87.29 | ||||||||||||
1909 | 70.23 | a | 67.89 | 70.97 | 84.13 | 90.87 | 103.27 | 102.87 | 99.06 | 95.70 | 89.74 | 76.20 | 59.42 | 84.20 | ||||||||||||
1910 | 64.45 | 69.93 | 82.26 | 87.43 | 97.65 | 102.77 | 104.77 | 103.13 | 102.57 | 88.87 | 73.77 | 68.13 | 87.14 | |||||||||||||
1911 | 67.32 | 65.39 | 78.81 | 84.73 | 93.58 | 102.50 | 99.19 | 102.87 | 97.37 | 83.48 | 71.77 | 59.94 | 83.91 | |||||||||||||
1912 | 68.58 | 72.24 | 70.87 | 77.57 | 90.84 | 104.10 | 99.29 | 101.20 | a | 96.27 | 81.52 | 73.60 | 61.00 | 83.09 | ||||||||||||
1913 | 60.26 | 65.54 | 73.13 | 84.03 | 92.39 | 100.23 | 101.83 | b | 101.70 | a | 98.30 | 87.71 | 73.77 | 62.55 | 83.45 | |||||||||||
1914 | 67.55 | 69.54 | 78.39 | 84.90 | 93.06 | 101.57 | 102.32 | 103.97 | 99.57 | 84.52 | 76.50 | 59.39 | 85.11 | |||||||||||||
1915 | 61.32 | 66.93 | 75.23 | a | 83.87 | 89.45 | 102.13 | 102.55 | 106.10 | 97.59 | c | 91.11 | d | 72.57 | i | 62.32 | 85.33 | a | ||||||||
1916 | 58.87 | 71.59 | 78.97 | 84.40 | 92.55 | 103.20 | 103.13 | 105.97 | 95.57 | 81.65 | 71.23 | 59.03 | 83.85 | |||||||||||||
1917 | 58.52 | 65.82 | 72.10 | 81.28 | a | 86.63 | a | 105.13 | 103.58 | 102.67 | a | 97.77 | 91.10 | j | 76.13 | 69.10 | 83.52 | a | ||||||||
1918 | 62.35 | 69.24 | c | 76.26 | 83.40 | 88.90 | 104.97 | 102.48 | b | 98.29 | 97.73 | 85.83 | a | 70.80 | 60.13 | 83.37 | ||||||||||
1919 | 63.77 | 62.04 | 69.90 | 85.73 | 94.45 | b | 103.32 | b | 99.39 | 100.42 | 93.63 | 78.32 | 69.97 | 65.94 | 82.24 | |||||||||||
1920 | 64.35 | h | 68.72 | 72.06 | 78.80 | 91.32 | f | 100.67 | 105.97 | 100.29 | q | 95.63 | 84.73 | a | 73.83 | 65.65 | 82.90 | c | ||||||||
1921 | 66.90 | a | 73.04 | 80.10 | a | 82.93 | 89.61 | 101.40 | 100.55 | b | 98.52 | b | 97.57 | 89.20 | a | 77.21 | b | 67.13 | 85.35 | |||||||
1922 | 60.61 | 65.89 | a | 70.07 | b | 78.89 | c | 93.94 | 102.70 | g | 103.17 | a | 102.40 | a | 99.30 | 87.50 | a | 69.90 | 65.65 | 81.57 | a | |||||
1923 | 68.45 | 67.07 | 71.87 | 81.71 | i | 94.94 | 97.52 | c | 100.63 | a | 98.10 | a | 94.48 | a | ----- | z | 69.80 | e | 59.35 | 82.22 | b | |||||
1924 | 62.61 | c | 72.38 | 69.23 | 78.60 | 95.13 | 102.33 | o | 102.97 | 104.00 | 98.33 | 84.06 | 76.17 | 62.14 | b | 82.33 | a | |||||||||
1925 | 61.81 | 72.29 | 78.29 | 85.17 | 95.55 | b | 101.03 | a | 105.14 | b | 97.41 | b | ----- | z | ----- | z | 70.43 | p | 64.77 | a | 84.61 | c | ||||
1926 | 60.54 | c | 70.74 | a | 75.67 | a | 79.61 | b | 91.04 | d | 103.61 | b | 103.04 | c | 102.93 | a | 96.73 | 87.12 | f | 73.53 | 62.15 | e | 83.60 | a | ||
1927 | ----- | z | 66.90 | g | 71.36 | f | 80.50 | b | 94.07 | c | 100.28 | a | 103.55 | k | 101.06 | 95.08 | e | 86.07 | a | 74.07 | 60.69 | b | 86.48 | d | ||
1928 | 65.77 | 64.55 | 75.90 | 83.23 | 95.43 | a | 101.93 | 106.90 | 100.65 | 97.90 | 84.36 | f | 69.41 | a | 61.73 | a | 83.95 | a | ||||||||
1929 | 62.14 | b | 64.25 | 71.54 | c | 79.90 | a | 94.59 | b | 102.40 | 103.93 | b | 101.07 | a | 94.96 | b | 87.27 | a | 69.61 | b | 67.81 | d | 83.29 | |||
1930 | 60.70 | a | 71.73 | b | 72.10 | 85.71 | b | 87.36 | c | 101.88 | e | 103.04 | h | 103.10 | 95.80 | 82.74 | 71.57 | 63.10 | 81.43 | a | ||||||
1931 | 63.81 | 65.82 | 74.45 | 85.40 | 96.71 | 103.20 | 108.35 | 101.26 | 97.33 | 84.71 | 65.77 | 59.16 | 83.83 | |||||||||||||
1932 | 56.16 | 65.62 | 73.03 | 83.83 | 93.65 | 101.07 | 103.06 | 103.90 | 99.87 | 81.84 | 74.40 | 57.58 | 82.83 | |||||||||||||
1933 | 58.90 | 59.89 | 73.42 | 77.21 | a | 86.26 | 101.80 | 106.55 | 104.55 | 97.87 | 87.00 | 73.80 | 63.48 | 82.56 | ||||||||||||
1934 | 64.26 | 69.04 | 80.03 | 88.30 | 99.10 | a | 99.13 | 105.84 | 100.70 | a | 97.13 | 87.15 | d | 70.33 | 64.58 | 85.47 | ||||||||||
1935 | 63.33 | a | 66.25 | 66.90 | 80.53 | 88.84 | 105.87 | 103.97 | 98.29 | 95.34 | a | 84.35 | e | 67.13 | 63.68 | 82.04 | ||||||||||
1936 | 62.10 | 63.93 | 75.19 | 87.07 | 98.81 | 105.60 | 104.94 | 102.65 | 95.43 | 83.58 | 72.47 | 61.81 | 84.46 | |||||||||||||
1937 | 51.58 | 64.50 | 69.55 | 81.37 | 95.61 | 101.47 | 104.42 | 102.52 | 96.57 | 86.30 | a | 72.63 | 65.71 | 82.69 | ||||||||||||
1938 | 64.97 | a | 65.18 | 68.48 | 81.57 | 92.17 | a | 103.00 | a | 102.90 | 101.42 | 97.80 | 83.70 | a | 67.47 | 65.00 | a | 82.80 | ||||||||
1939 | 60.77 | 57.00 | a | 73.77 | 85.37 | 95.32 | 102.83 | 105.23 | 100.35 | 92.17 | 84.06 | 74.37 | 67.48 | 83.23 | ||||||||||||
1940 | 65.16 | 65.66 | 75.35 | 83.13 | 97.82 | i | 104.03 | a | 106.67 | a | 102.74 | 95.57 | 83.58 | 68.60 | 65.44 | f | 85.05 | b | ||||||||
1941 | 62.04 | d | 65.15 | h | 69.21 | b | 74.27 | 90.77 | 98.53 | 101.97 | 98.68 | 93.10 | 78.13 | 72.87 | 62.52 | 82.01 | a | |||||||||
1942 | 63.32 | 62.86 | 69.74 | 77.70 | 89.81 | 99.97 | 102.06 | 98.39 | 95.80 | 82.74 | 74.17 | 66.38 | j | 83.32 | a | |||||||||||
1943 | 62.42 | 70.00 | 74.39 | 85.43 | 93.70 | a | 99.07 | b | 103.72 | f | 97.26 | 97.97 | 83.65 | 73.73 | 62.35 | 81.82 | a | |||||||||
1944 | 66.36 | f | 65.26 | b | 70.68 | 79.10 | 90.23 | 96.37 | c | 103.78 | h | 104.74 | 97.13 | 89.87 | 72.16 | e | 70.35 | k | 85.06 | c | ||||||
1945 | 64.11 | d | 68.71 | 68.48 | 80.67 | 92.16 | 95.29 | p | 103.70 | d | 102.55 | 98.80 | e | 88.16 | 75.97 | 63.97 | 82.48 | a | ||||||||
1946 | 62.84 | 71.53 | i | 76.68 | i | 89.20 | 92.59 | i | 103.40 | 103.14 | b | 101.48 | 96.87 | 81.17 | g | 69.17 | 69.90 | a | 87.00 | d | ||||||
1947 | 64.83 | b | 74.75 | 76.55 | 82.30 | 93.80 | a | 98.26 | c | 105.62 | e | 102.19 | 100.50 | 88.16 | f | 69.12 | f | 64.29 | 86.31 | b | ||||||
1948 | 65.39 | m | 68.89 | a | 69.57 | a | 87.92 | f | 93.45 | 99.93 | b | 104.55 | 107.44 | m | 103.23 | h | 90.13 | 73.52 | a | 65.39 | c | 83.18 | d | |||
1949 | 53.70 | d | 65.86 | 74.42 | 84.70 | 91.95 | i | 99.38 | f | 103.47 | a | 103.27 | a | 100.63 | 84.32 | 82.90 | 67.68 | i | 83.70 | c | ||||||
1950 | 64.32 | 73.39 | 76.65 | 88.79 | a | 91.94 | 101.21 | a | 101.74 | 104.00 | b | 96.00 | a | 94.87 | 82.13 | 75.68 | 87.56 | |||||||||
1951 | 67.53 | a | 68.89 | a | 74.54 | e | 81.23 | 92.45 | 100.57 | 105.07 | a | 100.10 | a | 99.27 | 90.35 | 73.45 | a | 67.26 | h | 86.68 | a | |||||
1952 | 64.10 | a | 67.63 | b | 67.27 | a | 78.07 | b | 95.93 | a | 102.21 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 79.20 | f |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 63.24 | 67.76 | 73.79 | 82.82 | 92.80 | 101.96 | 103.93 | 101.85 | 97.37 | 85.98 | 73.15 | 63.99 | 84.35 | |||||||||||||
S.D. | 3.92 | 3.78 | 3.83 | 3.48 | 2.95 | 2.23 | 2.45 | 2.38 | 2.38 | 3.58 | 3.58 | 3.74 | 1.79 | |||||||||||||
SKEW | -0.69 | -0.36 | 0.18 | -0.20 | -0.14 | -0.27 | 0.17 | -0.15 | 0.37 | 0.04 | 0.47 | 0.75 | 0.69 | |||||||||||||
MAX | 70.32 | 74.75 | 82.26 | 89.20 | 99.10 | 105.87 | 109.32 | 106.77 | 103.60 | 94.87 | 82.90 | 75.68 | 87.56 | |||||||||||||
MIN | 51.58 | 57.00 | 66.90 | 74.27 | 86.26 | 96.37 | 99.19 | 97.26 | 92.17 | 78.13 | 65.77 | 57.58 | 82.04 | |||||||||||||
YRS | 44 | 45 | 46 | 46 | 44 | 44 | 43 | 45 | 44 | 40 | 44 | 42 | 24 |