YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | 37.10 | a | 48.14 | a | 56.35 | 54.20 | a | 47.35 | d | 34.73 | a | 25.23 | 19.74 | 40.36 | d | |||
1960 | 13.34 | b | 15.00 | 30.00 | 33.41 | a | 37.87 | 50.97 | a | 55.58 | 52.29 | 48.27 | 35.00 | 27.79 | b | 17.74 | 34.77 | |||||||||
1961 | 18.10 | 23.96 | 26.87 | 32.87 | 37.58 | 50.00 | 55.19 | 52.84 | 43.93 | 33.55 | 25.27 | 18.19 | 34.86 | |||||||||||||
1962 | 16.81 | 24.14 | 20.55 | 35.43 | 36.26 | 44.50 | 55.23 | 53.19 | 47.93 | 35.45 | 29.50 | 20.87 | 34.99 | |||||||||||||
1963 | 15.90 | 26.04 | 24.45 | 30.97 | 39.55 | 45.21 | a | 56.68 | 53.61 | 48.18 | b | 39.89 | c | 29.07 | 17.87 | 35.62 | ||||||||||
1964 | 14.71 | 14.76 | 20.45 | 29.43 | 38.58 | 44.83 | 55.59 | b | 52.45 | 46.43 | 38.06 | 19.93 | 23.87 | 33.26 | ||||||||||||
1965 | 22.39 | 18.00 | 23.58 | 30.37 | 36.58 | 43.70 | 55.26 | 53.61 | 45.60 | 37.39 | 32.87 | 24.19 | 35.29 | |||||||||||||
1966 | 15.81 | 16.18 | 27.29 | 34.73 | 43.81 | 50.40 | 57.81 | 56.06 | 48.93 | 37.48 | 30.73 | 20.52 | 36.65 | |||||||||||||
1967 | 19.77 | 23.39 | 30.74 | 31.33 | 37.42 | 46.90 | 57.58 | 52.26 | 48.20 | 39.65 | 30.73 | 15.81 | 36.15 | |||||||||||||
1968 | 17.32 | 25.86 | 26.32 | 29.00 | 39.29 | 49.87 | 54.97 | 48.22 | d | 47.43 | 37.52 | 28.35 | m | 19.48 | f | 37.58 | b | |||||||||
1969 | 23.19 | j | 21.08 | c | 21.87 | 32.33 | 41.10 | a | 47.97 | 57.80 | a | 57.48 | f | 47.92 | e | 35.44 | d | 25.41 | m | 19.24 | n | 38.19 | d | |||
1970 | 16.55 | i | 26.00 | j | 25.25 | c | 27.18 | b | 41.67 | a | 48.07 | 56.39 | 55.90 | 45.15 | d | 31.11 | c | 29.70 | 22.17 | a | 38.26 | b | ||||
1971 | 19.36 | c | 22.93 | 25.72 | b | 29.00 | e | 32.61 | 46.27 | 56.48 | 53.94 | 44.28 | e | 32.29 | 26.17 | l | 16.05 | l | 36.29 | b | ||||||
1972 | 21.15 | e | 22.89 | a | ----- | z | 30.85 | c | 39.10 | a | 48.23 | 59.39 | 57.57 | c | 47.57 | 40.72 | f | 25.23 | q | 16.16 | 38.10 | c | ||||
1973 | 17.35 | 23.74 | a | 22.80 | a | 31.52 | e | 42.16 | 49.07 | 56.97 | ----- | z | ----- | z | 35.16 | 28.86 | a | 22.60 | f | 34.18 | c | |||||
1974 | 16.65 | e | 25.77 | b | 39.90 | k | 35.03 | ----- | z | 52.70 | 56.63 | a | 57.87 | 46.47 | ----- | z | ----- | z | 26.50 | m | 41.59 | e | ||||
1975 | 24.78 | d | 25.15 | a | 28.92 | e | 33.08 | d | 34.76 | f | 46.04 | g | 53.15 | d | 50.67 | a | 45.23 | d | ----- | z | ----- | z | ----- | z | 37.28 | e |
1976 | ----- | z | ----- | z | ----- | z | 30.38 | a | 38.90 | 44.83 | 53.77 | 49.42 | 45.70 | 33.68 | 23.53 | 18.80 | f | 40.03 | d | |||||||
1977 | 16.23 | 21.25 | 23.25 | c | 30.59 | c | 36.68 | f | 47.83 | 55.00 | b | 53.10 | k | 48.52 | a | 36.26 | 28.57 | g | 28.09 | i | 34.87 | d | ||||
1978 | 23.19 | 21.12 | c | 30.22 | d | 31.23 | d | 36.00 | a | 46.53 | 54.45 | 50.97 | 44.93 | b | 38.03 | a | 29.17 | a | 14.79 | c | 35.05 | |||||
1979 | 16.38 | b | 19.00 | i | 23.72 | f | 29.96 | c | 39.16 | 44.23 | 51.48 | 49.90 | 46.57 | 36.35 | 21.69 | d | 19.00 | 35.47 | b | |||||||
1980 | 24.57 | c | 24.97 | 24.00 | 30.24 | e | 33.80 | a | 47.13 | 53.74 | 53.06 | 45.00 | 33.84 | 27.19 | d | 26.40 | f | 36.14 | a | |||||||
1981 | 23.88 | f | 24.39 | 26.62 | b | 36.89 | b | 39.74 | 53.86 | a | 56.90 | b | 54.90 | b | 46.97 | 36.72 | b | 27.23 | d | 22.14 | b | 38.76 | a | |||
1982 | 17.45 | b | 22.36 | 26.61 | 32.27 | 38.16 | 42.97 | a | 53.23 | 54.90 | 48.20 | 31.73 | a | 27.62 | a | 19.07 | b | 34.55 | ||||||||
1983 | 19.65 | 22.74 | e | 28.77 | a | 28.50 | 37.58 | 45.00 | d | 56.16 | 52.06 | 50.63 | 37.47 | a | 26.52 | g | 23.41 | i | 37.86 | b | ||||||
1984 | 18.29 | g | 18.27 | g | 26.73 | a | 30.96 | b | 47.45 | 47.27 | 54.86 | c | 52.50 | e | 48.75 | b | 33.20 | f | ----- | z | ----- | z | 44.07 | e | ||
1985 | 18.31 | e | 18.68 | f | 27.62 | e | 34.50 | b | 40.74 | 49.93 | c | 55.19 | 55.43 | a | 43.63 | c | 38.41 | b | 27.54 | f | 18.36 | f | 40.42 | c | ||
1986 | 23.21 | c | 21.95 | h | 30.44 | d | 35.38 | a | 41.03 | b | 49.27 | 55.03 | 56.38 | r | 44.15 | j | 35.11 | d | 28.14 | a | 21.53 | a | 35.46 | c | ||
1987 | 15.16 | 21.04 | a | 22.17 | b | 33.73 | 37.68 | 47.97 | 52.48 | 51.80 | a | 44.92 | r | 39.04 | d | 25.82 | h | 15.46 | g | 35.67 | c | |||||
1988 | 14.96 | e | 22.57 | a | 24.71 | 32.59 | c | 37.10 | 49.81 | d | 57.35 | 54.75 | g | 41.27 | h | 39.65 | 27.40 | 15.31 | b | 32.15 | b | |||||
1989 | 12.17 | b | 22.39 | 32.07 | a | 39.70 | 43.17 | b | 48.00 | 56.67 | a | 52.48 | d | 45.44 | c | 35.28 | b | 23.96 | f | 16.86 | j | 38.74 | b | |||
1990 | 16.50 | i | 18.60 | h | 28.29 | j | 33.96 | e | 39.84 | 51.77 | 56.70 | d | 52.86 | b | 49.88 | d | 35.36 | c | 26.14 | a | 13.14 | b | 39.96 | c | ||
1991 | 17.23 | 23.48 | e | 22.74 | h | 30.73 | 37.68 | 45.27 | 55.23 | 53.87 | 48.79 | b | 39.77 | e | 26.29 | i | 20.38 | g | 39.11 | c | ||||||
1992 | 11.73 | e | 24.61 | f | 28.78 | d | 36.04 | b | 41.89 | d | 47.41 | a | 54.26 | 53.45 | 47.07 | a | 39.60 | a | 21.34 | a | 16.17 | g | 38.16 | b | ||
1993 | 23.57 | c | 26.43 | 27.89 | c | 32.83 | a | 40.87 | a | 46.10 | 54.87 | a | 54.71 | 46.29 | b | 36.03 | 25.00 | h | 18.79 | g | 38.96 | b | ||||
1994 | 18.50 | e | 18.54 | b | 28.58 | 33.33 | 39.57 | a | 52.48 | a | 56.76 | b | 57.19 | 48.33 | c | 34.36 | c | 24.41 | c | 23.45 | b | 36.29 | ||||
1995 | 21.81 | 27.21 | 30.13 | 31.80 | 37.90 | 46.13 | 55.13 | a | 56.37 | a | 49.90 | 35.43 | c | 30.50 | 21.46 | c | 36.98 | |||||||||
1996 | 23.10 | 25.96 | a | 25.41 | b | 34.04 | b | 45.21 | b | 52.93 | a | 59.23 | a | 55.61 | 46.45 | a | 36.29 | 26.86 | p | 23.44 | o | 40.42 | b | |||
1997 | 17.19 | o | 21.06 | j | 25.76 | n | 32.48 | i | 42.91 | h | 45.63 | c | 53.54 | c | 53.87 | h | 50.56 | l | 34.65 | h | ----- | z | 18.12 | n | 49.58 | j |
1998 | ----- | z | 17.67 | s | 28.45 | t | 27.67 | r | 37.44 | m | 45.91 | g | 56.70 | k | 55.17 | h | 48.86 | i | 33.07 | q | 26.33 | r | 18.16 | l | ----- | z |
1999 | 22.06 | m | 20.90 | r | 30.00 | s | 29.50 | l | 38.57 | h | 48.41 | a | 56.29 | g | 53.50 | k | 46.50 | p | 35.32 | l | 25.93 | o | 14.40 | p | 48.41 | k |
2000 | 17.50 | w | 21.67 | t | 22.14 | x | 34.26 | g | 43.62 | e | 53.10 | 57.23 | 54.91 | h | 48.20 | 36.44 | m | 19.75 | n | 19.67 | s | 50.54 | h | |||
2001 | 15.65 | n | 17.94 | k | 27.35 | k | 33.14 | i | 44.67 | d | 49.93 | a | 55.96 | f | 52.85 | k | 49.95 | k | 38.77 | r | 23.23 | q | ----- | z | 47.30 | j |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | 26.89 | t | 37.50 | w | 32.40 | o | 41.84 | l | ----- | z | 54.68 | 52.00 | 44.60 | 35.74 | ----- | z | ----- | z | 46.75 | h | ||||
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 18.41 | 22.53 | 26.41 | 32.33 | 39.53 | 48.06 | 55.63 | 53.48 | 47.02 | 36.20 | 27.13 | 19.35 | 35.37 | |||||||||||||
S.D. | 3.61 | 3.32 | 3.11 | 2.58 | 3.10 | 2.79 | 1.70 | 2.27 | 1.77 | 2.31 | 3.29 | 3.20 | 1.03 | |||||||||||||
SKEW | 0.16 | -0.95 | -0.20 | 0.51 | 0.34 | 0.29 | -0.07 | -0.07 | -0.08 | -0.17 | -0.57 | -0.24 | -0.25 | |||||||||||||
MAX | 24.78 | 27.21 | 32.07 | 39.70 | 47.45 | 53.86 | 59.39 | 57.87 | 50.63 | 39.89 | 32.87 | 24.19 | 36.98 | |||||||||||||
MIN | 11.73 | 14.76 | 20.45 | 27.18 | 32.61 | 42.97 | 51.48 | 48.22 | 43.63 | 31.11 | 19.93 | 13.14 | 33.26 | |||||||||||||
YRS | 31 | 29 | 31 | 37 | 37 | 41 | 41 | 34 | 36 | 35 | 23 | 20 | 12 |