YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.25 | v | 67.38 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 34.91 | i | 25.57 | b | 20.45 | b | 23.01 | j |
1923 | 19.97 | 18.25 | 22.71 | 29.40 | 34.97 | a | 38.53 | 46.45 | 45.43 | a | 42.26 | c | 33.71 | 29.97 | 20.07 | b | 31.81 | |||||||||
1924 | 18.13 | 26.37 | b | 21.52 | 27.37 | 37.54 | c | 39.79 | a | 43.42 | 42.77 | a | 39.33 | 32.61 | 27.23 | 17.13 | 31.10 | |||||||||
1925 | 23.19 | 22.57 | 22.20 | a | 30.10 | 37.23 | 40.73 | 47.16 | 42.69 | b | 38.27 | 30.84 | 27.60 | 25.93 | b | 32.38 | ||||||||||
1926 | 24.35 | 25.96 | a | 26.93 | b | 34.87 | 35.33 | a | 41.90 | a | 43.80 | a | 43.41 | b | 33.77 | 35.30 | a | 32.77 | 21.39 | 33.31 | ||||||
1927 | 22.77 | a | 21.11 | a | 21.61 | 24.30 | 30.77 | a | 40.53 | o | 45.30 | a | 44.17 | a | 38.47 | 31.74 | 31.83 | 20.58 | 30.24 | a | ||||||
1928 | 22.29 | 23.62 | 29.00 | b | 27.76 | a | 37.68 | ----- | z | 46.26 | 42.93 | b | 39.47 | 33.23 | 29.30 | 22.94 | 32.22 | a | ||||||||
1929 | 15.97 | 14.86 | 21.65 | 24.76 | a | 31.86 | c | 38.40 | 44.07 | a | 43.70 | a | 36.96 | c | 33.97 | b | 27.67 | 29.32 | 30.26 | |||||||
1930 | 15.23 | 25.86 | 27.07 | b | 31.93 | 32.52 | 37.93 | 43.58 | 41.27 | p | 42.12 | v | 31.70 | a | 27.00 | a | 22.25 | c | 29.51 | b | ||||||
1931 | 22.04 | c | 24.00 | c | 27.10 | b | 31.67 | c | 38.61 | 42.55 | a | 46.87 | 42.32 | f | ----- | z | 31.91 | t | 20.96 | f | 16.21 | c | 31.13 | d | ||
1932 | ----- | z | 12.28 | 24.48 | 25.75 | b | 33.06 | 41.47 | 42.00 | a | 41.42 | 41.73 | 33.35 | 31.03 | 16.29 | 31.17 | a | |||||||||
1933 | 13.68 | c | 9.86 | 22.16 | 24.26 | c | 28.62 | b | 37.70 | 45.10 | 46.10 | 36.00 | c | 36.36 | i | 28.13 | 25.68 | 28.84 | a | |||||||
1934 | 26.90 | 27.23 | b | 32.77 | 33.52 | a | 37.74 | 37.79 | a | 42.48 | 45.19 | 38.00 | n | 31.60 | a | 28.17 | 22.84 | 33.29 | a | |||||||
1935 | 18.81 | 21.57 | 13.68 | 25.27 | 30.58 | 38.03 | 41.45 | 44.13 | 39.90 | 31.39 | 20.47 | 22.89 | c | 29.01 | ||||||||||||
1936 | 20.42 | 18.66 | 19.23 | 25.24 | a | 34.55 | 39.70 | 42.87 | 42.84 | 36.93 | 33.45 | 26.13 | 20.54 | e | 30.05 | |||||||||||
1937 | 3.37 | a | 16.77 | b | 24.82 | c | 23.86 | a | 30.38 | e | 40.10 | 43.74 | 40.16 | 37.48 | e | 29.83 | a | 28.47 | 23.68 | 28.56 | ||||||
1938 | 18.65 | 19.11 | 20.52 | 28.03 | 38.69 | b | 46.53 | 52.16 | 44.84 | 39.20 | 29.93 | a | 22.52 | a | 21.93 | a | 31.84 | |||||||||
1939 | 15.78 | d | 15.81 | a | 20.03 | 26.66 | a | 31.74 | 34.43 | 42.48 | 42.90 | 40.13 | 32.72 | f | 28.00 | b | 30.73 | e | 29.88 | a | ||||||
1940 | 26.50 | a | 26.69 | 28.30 | a | 31.47 | 37.42 | 43.10 | 44.38 | e | 43.82 | i | 40.07 | 34.97 | 26.48 | c | 25.82 | c | 33.20 | a | ||||||
1941 | 25.63 | a | 26.85 | a | 27.89 | c | 28.69 | a | 36.16 | 39.07 | 46.93 | d | 44.06 | 36.33 | 31.84 | 30.89 | c | 25.43 | c | 33.31 | ||||||
1942 | 21.58 | 18.37 | a | 19.97 | b | 26.97 | 32.39 | 37.10 | 48.28 | f | 45.50 | c | 38.43 | 32.90 | a | 27.64 | b | 24.31 | e | 29.56 | a | |||||
1943 | 18.57 | c | 23.15 | b | 23.32 | i | 29.77 | d | 31.10 | 36.47 | 42.65 | 39.77 | a | 40.80 | 31.94 | 29.76 | a | 24.21 | c | 31.65 | a | |||||
1944 | 17.97 | 19.03 | 21.80 | f | 27.07 | 31.74 | d | 37.77 | 43.55 | ----- | z | 38.11 | b | 36.30 | a | 26.64 | b | 26.00 | a | 30.42 | b | |||||
1945 | 22.48 | 23.86 | 20.03 | 25.40 | 34.81 | 38.80 | 44.87 | 43.23 | 37.10 | 35.23 | 27.72 | a | 23.61 | 31.43 | ||||||||||||
1946 | 18.03 | 19.29 | 23.65 | 27.70 | 34.23 | 37.77 | 44.39 | 43.48 | 36.37 | 29.65 | 26.63 | 26.94 | 30.68 | |||||||||||||
1947 | 19.90 | 25.96 | 28.00 | 30.40 | 37.13 | 37.67 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.28 | g | |||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.52 | 40.10 | 36.59 | a | 33.19 | 23.52 | a | 15.10 | a | 31.67 | f | |||
1949 | ----- | z | 11.54 | 14.71 | 28.80 | 36.55 | 37.93 | 41.19 | 39.53 | a | 39.77 | 28.77 | 31.97 | 17.25 | c | 29.82 | a | |||||||||
1950 | 16.52 | 22.11 | 25.39 | 28.67 | 30.26 | ----- | z | 42.19 | 41.45 | 37.21 | a | 35.07 | b | 30.40 | 29.81 | 30.82 | a | |||||||||
1951 | 21.48 | 21.43 | 18.45 | 30.97 | 33.65 | 39.07 | a | 42.23 | 40.74 | 38.53 | 32.29 | 27.23 | 19.87 | 30.50 | ||||||||||||
1952 | 15.87 | 18.21 | 20.42 | 26.29 | m | 39.33 | y | 37.87 | 45.77 | 42.84 | 42.17 | 37.16 | 24.23 | 21.10 | 30.56 | b | ||||||||||
1953 | 24.06 | 19.86 | 21.90 | 26.33 | 30.23 | 35.20 | 41.90 | 42.77 | a | 42.20 | 33.39 | 32.37 | 25.32 | 31.29 | ||||||||||||
1954 | 22.00 | 23.71 | 20.58 | 28.50 | 34.52 | b | 35.47 | 40.42 | 37.19 | 32.20 | 28.28 | b | 25.70 | 18.74 | 28.94 | |||||||||||
1955 | 12.87 | 11.21 | 14.32 | 17.24 | a | 24.58 | 33.80 | 33.58 | 39.68 | 36.23 | 34.26 | 25.31 | a | 23.65 | 25.56 | |||||||||||
1956 | 22.80 | a | 17.00 | 21.00 | 20.33 | u | 34.39 | 37.00 | 45.39 | 39.83 | a | 37.57 | 31.00 | 28.00 | t | ----- | z | 31.77 | c | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.61 | 20.37 | 22.65 | 27.83 | 33.78 | 38.69 | 43.75 | 42.51 | 38.32 | 32.63 | 27.76 | 22.67 | 30.63 | |||||||||||||
S.D. | 4.74 | 4.87 | 4.43 | 3.41 | 3.31 | 2.69 | 2.99 | 2.17 | 2.38 | 2.17 | 2.86 | 3.91 | 1.96 | |||||||||||||
SKEW | -1.20 | -0.48 | 0.02 | -0.56 | -0.52 | 0.74 | -0.50 | -0.46 | -0.32 | -0.02 | -0.31 | 0.01 | -0.91 | |||||||||||||
MAX | 26.90 | 27.23 | 32.77 | 34.87 | 38.69 | 46.53 | 52.16 | 46.10 | 42.26 | 37.16 | 32.77 | 30.73 | 33.31 | |||||||||||||
MIN | 3.37 | 9.86 | 13.68 | 17.24 | 24.58 | 33.80 | 33.58 | 37.19 | 32.20 | 28.28 | 20.47 | 15.10 | 25.56 | |||||||||||||
YRS | 31 | 33 | 31 | 31 | 32 | 29 | 32 | 29 | 30 | 30 | 32 | 33 | 16 |