YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1969 | 25.20 | a | 14.75 | 14.58 | 26.00 | b | 32.35 | 38.57 | 48.03 | 48.97 | 41.80 | 31.35 | 26.50 | 24.77 | 31.07 | |||||||||||
1970 | 26.58 | 24.39 | 19.48 | 21.70 | 36.29 | 41.03 | 47.84 | 47.84 | 39.63 | 33.23 | 29.70 | 18.03 | 32.15 | |||||||||||||
1971 | 18.00 | 18.82 | 25.61 | 24.53 | 28.55 | 40.45 | a | 46.68 | 47.48 | 42.70 | 28.45 | b | 25.63 | 16.97 | 30.32 | |||||||||||
1972 | 17.77 | a | 23.66 | 29.19 | 29.47 | 32.90 | 40.13 | 51.58 | 43.79 | c | 40.31 | a | 31.32 | f | 21.40 | 18.45 | 31.70 | a | ||||||||
1973 | 17.74 | 15.75 | 13.61 | 22.80 | 33.82 | c | 43.30 | 47.71 | 44.52 | 38.43 | g | 32.38 | o | 23.76 | m | 23.89 | d | 29.24 | c | |||||||
1974 | 18.11 | c | 19.71 | d | 23.81 | d | 28.72 | a | 35.35 | 46.82 | b | 46.48 | 44.14 | c | 43.88 | e | 32.57 | h | 26.77 | d | 17.24 | f | 33.38 | b | ||
1975 | 23.30 | d | 20.07 | 21.19 | d | 19.30 | 29.03 | b | 38.96 | b | 47.62 | e | 45.00 | d | 39.92 | f | 33.42 | g | 27.64 | b | 19.61 | 29.17 | b | |||
1976 | 22.48 | 20.96 | b | 18.52 | d | 22.42 | d | 33.20 | f | 37.65 | j | 45.88 | e | 43.00 | e | 35.95 | h | 30.62 | j | 25.18 | h | 20.74 | d | 27.72 | e | |
1977 | 16.00 | e | 22.21 | d | 17.69 | o | 25.84 | e | 27.30 | k | 41.89 | k | 44.74 | h | 46.20 | k | 40.32 | h | 33.20 | k | 29.00 | h | 28.48 | b | 23.13 | h |
1978 | 20.55 | b | 18.09 | f | 20.38 | g | 21.00 | j | 30.00 | k | 41.85 | j | 44.61 | h | 45.78 | d | 38.46 | q | 34.33 | p | 19.00 | n | 12.30 | k | 33.16 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 20.57 | 20.04 | 20.75 | 24.53 | 32.62 | 41.32 | 47.73 | 45.61 | 41.66 | 31.01 | 26.27 | 21.37 | 31.18 | |||||||||||||
S.D. | 3.62 | 3.27 | 5.35 | 3.33 | 2.94 | 2.87 | 1.73 | 2.05 | 1.73 | 2.41 | 2.76 | 3.98 | 0.92 | |||||||||||||
SKEW | 0.42 | -0.33 | 0.13 | 0.07 | -0.29 | 1.04 | 1.41 | 0.41 | 0.06 | -0.26 | -0.76 | 0.63 | 0.21 | |||||||||||||
MAX | 26.58 | 24.39 | 29.19 | 29.47 | 36.29 | 46.82 | 51.58 | 48.97 | 43.88 | 33.23 | 29.70 | 28.48 | 32.15 | |||||||||||||
MIN | 16.00 | 14.75 | 13.61 | 19.30 | 28.55 | 38.57 | 45.88 | 43.00 | 39.63 | 28.45 | 21.40 | 16.97 | 30.32 | |||||||||||||
YRS | 10 | 9 | 8 | 9 | 7 | 7 | 8 | 9 | 5 | 3 | 6 | 8 | 3 |