YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.07 | 57.37 | a | 53.97 | 48.45 | a | 43.35 | 41.83 | a | 34.52 | 47.65 | e | ||||
1971 | 32.63 | a | 31.96 | 36.03 | 37.96 | b | 44.43 | a | ----- | z | 58.06 | 57.27 | a | 50.28 | a | 37.89 | c | 34.73 | 29.23 | 40.95 | a | |||||
1972 | 28.93 | b | 35.86 | 40.86 | b | 39.10 | a | 45.41 | b | 52.52 | a | 55.25 | c | 54.17 | a | 46.67 | c | 45.79 | c | 36.37 | c | 28.13 | 42.42 | |||
1973 | 32.13 | a | 38.22 | a | 34.93 | a | 40.81 | c | 49.31 | b | 52.77 | d | 56.70 | d | 52.96 | d | 49.93 | a | 42.14 | c | ----- | z | 35.47 | a | 44.13 | a |
1974 | 33.97 | a | 33.00 | e | 39.67 | d | 37.21 | b | 44.68 | c | 52.62 | a | 55.55 | b | 56.32 | f | 51.08 | d | 45.87 | 36.66 | a | 31.10 | 41.95 | a | ||
1975 | 31.04 | c | 35.21 | d | 37.45 | b | 34.31 | d | 44.15 | e | 51.46 | f | 54.11 | c | 52.74 | 52.64 | b | 42.94 | 33.52 | a | 31.78 | d | 40.90 | a | ||
1976 | 29.62 | b | ----- | z | 30.58 | 36.23 | d | 45.21 | g | 48.22 | g | 55.24 | b | 51.00 | a | 50.86 | a | 42.26 | 35.32 | b | 25.37 | l | 41.39 | d | ||
1977 | 27.74 | d | ----- | z | ----- | z | ----- | z | 40.50 | o | 55.20 | j | 53.89 | d | 56.27 | a | 50.10 | a | 43.73 | a | 35.37 | c | 38.13 | a | 43.61 | e |
1978 | 39.00 | b | 37.58 | b | 42.46 | c | 40.96 | b | ----- | z | 50.63 | c | 57.07 | c | 55.31 | b | 48.69 | d | 44.88 | e | 35.04 | b | 26.46 | c | 43.46 | a |
1979 | 31.03 | 34.00 | c | 38.80 | a | 40.29 | b | 48.55 | b | 50.07 | a | 55.57 | a | 53.67 | a | ----- | z | 46.03 | a | 37.37 | 33.77 | 42.65 | a | |||
1980 | ----- | z | 38.89 | b | 34.47 | a | 41.17 | f | 44.86 | b | 47.59 | c | 56.97 | a | 53.47 | a | ----- | z | 43.00 | c | ----- | z | 33.74 | 44.12 | d | |
1981 | 35.48 | 35.46 | d | 37.10 | b | 41.83 | 46.41 | d | 54.57 | b | 52.25 | c | 53.89 | d | 51.73 | 42.00 | b | 42.00 | d | 38.84 | 44.30 | |||||
1982 | 30.32 | 36.11 | a | 37.69 | b | 40.21 | a | 47.45 | b | 50.81 | c | 54.85 | d | 55.46 | c | 51.17 | a | 44.73 | a | 36.67 | 33.50 | c | 43.25 | |||
1983 | 35.60 | a | 39.31 | b | 40.84 | 39.64 | b | 46.00 | c | ----- | z | 52.46 | e | ----- | z | 52.28 | a | 46.70 | a | ----- | z | ----- | z | 44.10 | d | |
1984 | ----- | z | 34.77 | c | ----- | z | ----- | z | 48.64 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.71 | j |
1985 | ----- | z | 32.85 | a | 33.14 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.00 | j |
1986 | ----- | z | ----- | z | 40.29 | n | 40.32 | h | 46.00 | j | 54.00 | k | 54.80 | f | 54.43 | c | 47.54 | d | 45.07 | d | 36.04 | b | 31.86 | c | 42.99 | g |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.28 | b | 53.64 | c | 49.93 | b | 47.00 | f | 36.85 | c | 36.04 | d | 45.75 | g |
1988 | ----- | z | 34.95 | j | 37.48 | j | 43.00 | e | 44.15 | e | 51.31 | d | 58.65 | e | 54.28 | f | 49.79 | b | 43.65 | e | 39.14 | b | 32.03 | b | 45.22 | d |
1989 | 31.00 | e | 31.87 | e | 39.86 | b | 44.34 | a | 45.75 | g | 53.54 | f | 54.00 | a | 53.13 | a | 49.50 | 43.77 | a | 35.62 | a | 30.64 | f | 42.57 | c | |
1990 | 32.72 | b | 29.32 | 37.38 | e | 45.56 | c | 46.97 | a | 50.90 | 58.75 | c | 56.31 | b | 50.25 | b | 43.59 | b | 32.90 | 25.00 | a | 42.47 | ||||
1991 | 29.03 | a | 35.85 | a | 34.80 | a | 37.50 | d | 42.20 | f | ----- | z | 60.41 | i | ----- | z | ----- | z | ----- | z | ----- | z | 32.23 | 33.88 | g | |
1992 | 30.92 | g | ----- | z | ----- | z | 41.35 | j | 50.08 | f | ----- | z | ----- | z | 56.93 | b | ----- | z | 47.14 | c | ----- | z | 32.24 | b | 45.44 | i |
1993 | ----- | z | 36.54 | ----- | z | ----- | z | 45.09 | h | 50.48 | e | 53.57 | c | 54.12 | e | 49.23 | h | 47.29 | c | 33.47 | 32.07 | a | 43.93 | e | ||
1994 | 32.52 | d | 34.28 | j | 37.60 | a | 40.70 | c | 47.31 | b | 49.04 | b | 55.61 | c | 51.77 | a | 48.95 | h | 41.35 | 32.12 | d | 31.76 | b | 41.98 | b | |
1995 | 40.77 | 37.07 | 40.34 | b | 39.62 | a | 46.23 | a | ----- | z | ----- | z | 53.11 | d | 50.79 | b | 44.43 | a | 40.10 | 37.70 | a | 43.02 | b | |||
1996 | 36.00 | a | 40.69 | c | 36.81 | e | 41.10 | 46.32 | 52.74 | c | 57.77 | ----- | z | 48.93 | ----- | z | 39.03 | 39.78 | d | 43.92 | b | |||||
1997 | 36.39 | ----- | z | 37.87 | a | 36.62 | f | 48.43 | a | 51.37 | 55.73 | a | 53.77 | 50.27 | h | 41.55 | 39.89 | b | 32.93 | a | 44.22 | c | ||||
1998 | 38.57 | a | 38.90 | g | 38.64 | c | 39.41 | a | 44.06 | 50.37 | 55.90 | 53.84 | 53.73 | 42.39 | 38.07 | 29.43 | a | 44.04 | a | |||||||
1999 | 33.44 | d | 30.86 | g | 34.71 | 37.57 | 41.90 | 46.73 | 50.10 | 51.52 | 48.31 | n | 40.97 | 36.67 | c | 30.90 | a | 40.45 | b | |||||||
2000 | 36.40 | a | 39.40 | d | 37.74 | 41.83 | a | 46.57 | a | 53.21 | a | 50.54 | c | 54.17 | a | 49.97 | 42.77 | a | 32.63 | 32.21 | b | 43.12 | ||||
2001 | 31.63 | a | 32.33 | a | 38.93 | c | 37.39 | g | 53.17 | h | 56.00 | p | 55.68 | 56.03 | a | 53.30 | 46.77 | 42.11 | c | 37.44 | d | 43.80 | c | |||
2002 | ----- | z | 34.61 | 36.13 | a | 43.62 | d | 45.07 | a | 53.43 | 58.16 | 53.58 | 51.13 | 41.95 | i | ----- | z | 34.81 | d | 45.62 | c | |||||
2003 | 38.26 | 33.14 | 36.06 | 37.04 | d | 44.58 | 53.03 | 58.23 | a | 56.03 | 52.23 | 46.55 | b | 34.24 | m | 31.00 | t | 45.52 | b | |||||||
2004 | 36.60 | k | 34.57 | h | 42.03 | a | 43.10 | 45.65 | 52.53 | 56.45 | 55.10 | a | 48.67 | 43.52 | 36.46 | b | 34.28 | b | 45.78 | b | ||||||
2005 | 35.38 | j | 41.30 | a | 39.27 | a | 39.03 | a | 47.68 | c | 49.56 | c | 60.16 | 55.83 | b | 48.53 | 44.20 | f | 40.48 | a | 36.35 | 45.82 | b | |||
2006 | ----- | z | 32.67 | a | 34.97 | 41.64 | e | 48.16 | 54.13 | 58.55 | 52.87 | 49.37 | 41.19 | 38.07 | 32.79 | c | 44.04 | a | ||||||||
2007 | 27.45 | 36.11 | 38.94 | 40.79 | a | 47.03 | a | 50.73 | 56.10 | b | 55.32 | 48.37 | 44.00 | a | 38.40 | 32.00 | a | 42.94 | ||||||||
2008 | 32.68 | c | 33.90 | 36.77 | 38.10 | 47.39 | 50.93 | 56.48 | 56.74 | 50.87 | 44.23 | ----- | z | 30.57 | a | 43.51 | a | |||||||||
2009 | 33.26 | h | 35.33 | a | 36.13 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.73 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 33.25 | 35.48 | 37.47 | 40.09 | 46.20 | 51.45 | 55.70 | 54.33 | 50.23 | 43.80 | 37.00 | 33.00 | 43.08 | |||||||||||||
S.D. | 3.60 | 2.89 | 2.60 | 2.58 | 1.77 | 1.97 | 2.40 | 1.60 | 1.68 | 2.12 | 2.81 | 3.37 | 0.68 | |||||||||||||
SKEW | 0.33 | 0.16 | -0.29 | -0.01 | -0.27 | -0.53 | -0.51 | -0.01 | 0.12 | -0.37 | 0.17 | -0.10 | 0.88 | |||||||||||||
MAX | 40.77 | 41.30 | 42.46 | 45.56 | 49.31 | 54.57 | 60.16 | 57.27 | 53.73 | 47.29 | 42.11 | 39.78 | 44.30 | |||||||||||||
MIN | 27.45 | 29.32 | 30.58 | 34.31 | 41.90 | 46.73 | 50.10 | 51.00 | 46.67 | 37.89 | 32.12 | 25.00 | 42.42 | |||||||||||||
YRS | 26 | 28 | 32 | 28 | 27 | 25 | 33 | 32 | 29 | 32 | 29 | 33 | 6 |