YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.26 | f | 59.47 | 42.48 | 24.12 | 26.89 | 38.24 | h | ||||
1960 | 16.29 | 18.67 | 17.11 | 43.30 | 51.47 | 60.24 | a | 64.88 | a | 65.68 | 58.30 | 45.19 | 34.60 | 15.52 | 40.94 | |||||||||||
1961 | 12.29 | 21.77 | 29.85 | 38.88 | 50.40 | b | 62.66 | b | 66.50 | 65.42 | 57.47 | 47.10 | 29.87 | 17.12 | j | 43.84 | a | |||||||||
1962 | 6.52 | g | 10.13 | b | 24.98 | 39.85 | 56.87 | a | 60.78 | 63.32 | 64.11 | 52.80 | 47.37 | a | 33.13 | 17.90 | a | 42.84 | a | |||||||
1963 | 1.69 | 7.45 | 27.37 | 44.38 | 50.31 | 64.72 | 67.37 | 62.89 | 55.45 | 53.74 | 35.47 | 10.79 | 40.14 | |||||||||||||
1964 | 17.47 | 18.21 | 26.28 | a | 42.80 | 58.40 | 62.85 | 69.31 | b | 62.85 | 55.10 | a | 44.81 | 36.33 | 13.94 | 42.36 | ||||||||||
1965 | 10.42 | 9.80 | 21.61 | 38.00 | 57.58 | 60.70 | b | 64.56 | 63.44 | 52.72 | 46.56 | 32.70 | 25.52 | 40.30 | ||||||||||||
1966 | 5.58 | 16.11 | 30.98 | 39.35 | 48.76 | 64.83 | a | 69.85 | 63.95 | 58.38 | e | 45.11 | d | 32.11 | b | 18.52 | 41.13 | |||||||||
1967 | 15.18 | 7.70 | 24.81 | 41.88 | 48.25 | a | 63.05 | 64.90 | 61.40 | 55.35 | 43.40 | b | 28.85 | 19.74 | 39.54 | |||||||||||
1968 | 11.05 | 12.21 | a | 33.65 | 43.07 | 51.13 | 62.58 | 66.55 | a | 65.18 | 58.02 | 48.98 | 33.44 | e | 22.41 | n | 44.17 | a | ||||||||
1969 | ----- | z | 16.22 | a | 24.12 | a | 43.92 | 54.48 | 56.09 | b | 66.60 | a | 68.33 | a | 57.48 | c | 44.14 | b | 30.02 | g | 19.18 | 45.06 | b | |||
1970 | 5.74 | 14.02 | c | 24.34 | b | 43.50 | b | 54.26 | b | 63.81 | c | 69.82 | 65.77 | 56.27 | b | 48.26 | 31.70 | 18.45 | 41.33 | |||||||
1971 | 6.42 | 12.91 | 22.05 | 41.22 | 50.52 | a | 66.43 | a | 64.16 | 62.39 | 58.86 | a | 53.15 | 33.88 | 19.52 | a | 40.96 | |||||||||
1972 | 6.43 | a | 9.98 | 22.84 | 37.25 | 57.44 | 60.90 | 65.62 | a | 64.62 | b | 56.13 | 41.72 | a | 32.37 | c | 13.95 | a | 39.10 | |||||||
1973 | 16.50 | 18.43 | 37.40 | a | 37.96 | g | 50.09 | d | 63.98 | e | 68.93 | a | 67.98 | a | 58.05 | b | 50.73 | a | 31.96 | c | 18.02 | a | 43.83 | a | ||
1974 | 13.41 | b | 12.27 | d | 27.12 | a | 43.72 | a | 50.37 | a | 54.71 | w | ----- | z | 63.73 | p | 51.80 | 44.44 | 33.50 | 21.24 | b | 33.10 | c | |||
1975 | 13.31 | 15.20 | 22.03 | a | 35.72 | 57.66 | 61.95 | a | 69.02 | 64.34 | b | 52.53 | 46.73 | a | 36.02 | a | 18.16 | 41.06 | ||||||||
1976 | 8.68 | 21.62 | 26.56 | 44.67 | 51.63 | 65.05 | 68.29 | 64.11 | 53.86 | a | 40.32 | 25.68 | b | 8.32 | a | 39.90 | ||||||||||
1977 | 2.37 | e | 18.23 | 33.85 | a | 47.35 | 62.15 | a | 61.55 | a | 70.38 | e | 61.68 | 57.33 | a | 44.93 | a | 31.50 | a | 19.52 | i | 44.67 | a | |||
1978 | 9.56 | e | 10.44 | d | 26.55 | b | 40.61 | b | 55.45 | a | 62.44 | c | 64.74 | d | 64.50 | h | 58.40 | e | 44.98 | g | 30.41 | a | 15.48 | f | 39.84 | c |
1979 | 2.50 | f | 7.37 | b | 24.94 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.83 | g | 29.93 | j | 24.79 | c | 19.03 | i |
1980 | 13.19 | g | 13.88 | c | 24.58 | f | 45.80 | j | 56.56 | f | 61.50 | e | 68.79 | c | 66.92 | f | 55.67 | d | 41.83 | k | 33.24 | k | 18.31 | o | 49.96 | h |
1981 | 12.44 | f | 21.74 | c | 32.52 | c | 43.74 | c | 52.05 | c | 64.30 | c | 65.93 | i | 66.00 | g | 53.69 | l | 42.76 | l | 37.17 | d | 19.15 | a | 38.67 | e |
1982 | 3.40 | e | 11.80 | f | 25.84 | f | 39.41 | b | 58.36 | f | 55.67 | j | 69.40 | g | 62.93 | j | 54.37 | c | 45.96 | d | 31.74 | m | 25.97 | l | 35.79 | h |
1983 | 18.73 | c | 27.92 | d | 30.62 | g | 40.37 | c | 49.09 | b | 64.15 | f | 71.48 | g | 68.48 | f | 58.09 | g | 45.40 | f | 34.24 | g | 9.62 | g | 34.03 | h |
1984 | 11.04 | d | 25.00 | i | 23.23 | c | 45.59 | a | 51.37 | e | 65.39 | g | 66.57 | j | 67.92 | g | 53.64 | i | 45.81 | g | 33.06 | l | 19.84 | o | 32.81 | h |
1985 | 9.67 | g | 17.07 | h | 32.10 | e | 46.28 | c | 56.88 | c | 59.73 | h | 66.59 | c | 64.08 | g | 56.85 | f | 45.29 | e | 27.67 | g | 8.14 | i | 49.43 | g |
1986 | 10.92 | f | 15.28 | h | 29.50 | i | 47.12 | a | 57.34 | b | 60.83 | i | 69.20 | d | 62.59 | d | 56.98 | b | 44.60 | f | 26.83 | c | 20.83 | g | 53.35 | f |
1987 | 18.93 | d | 24.50 | a | 33.71 | 47.53 | a | 55.85 | d | 65.67 | c | 70.43 | c | 64.70 | d | 58.22 | a | 40.25 | c | 34.31 | d | 25.45 | 44.96 | |||
1988 | 7.00 | a | 12.64 | d | 27.93 | a | 42.95 | a | 57.48 | a | 66.93 | a | 71.36 | c | 70.03 | b | 58.02 | e | 37.00 | g | 33.13 | d | 18.66 | f | 44.75 | b |
1989 | 18.62 | a | 8.21 | b | 22.30 | a | 40.40 | a | 51.97 | b | 61.53 | 68.52 | c | 66.58 | a | 55.50 | g | 46.76 | d | 27.93 | c | 8.43 | c | 38.29 | a | |
1990 | 22.05 | 18.59 | a | 32.50 | b | 46.10 | a | 51.74 | 63.71 | b | 65.74 | d | 65.73 | e | 59.48 | f | 43.69 | e | 35.47 | a | 17.86 | b | 42.11 | a | ||
1991 | 9.08 | a | 20.69 | b | 29.16 | 45.26 | a | 57.43 | c | 66.64 | e | 67.07 | d | 66.96 | f | 54.90 | e | 43.73 | i | 26.78 | a | 19.46 | d | 39.65 | b | |
1992 | 18.25 | a | 23.84 | 27.97 | 39.70 | b | 53.31 | b | 60.24 | a | 60.97 | p | 60.85 | d | 54.63 | 41.62 | g | 30.00 | d | 20.23 | 38.90 | b | ||||
1993 | 12.95 | 15.04 | 27.90 | a | 38.79 | a | 52.98 | b | 59.58 | l | 66.00 | g | 66.74 | f | 51.62 | e | 43.83 | d | 29.84 | e | 20.61 | c | 32.62 | c | ||
1994 | 2.77 | e | 13.55 | h | 29.34 | b | 41.27 | b | 53.54 | c | 65.57 | 65.19 | r | 64.11 | h | 55.27 | q | 48.08 | f | 36.69 | f | 23.70 | k | 38.50 | g | |
1995 | 17.57 | d | 17.33 | b | 33.00 | c | 37.33 | 53.17 | d | 67.47 | l | 68.20 | c | 71.10 | p | 57.06 | m | 47.17 | h | 25.00 | u | 13.22 | o | 37.77 | f | |
1996 | 8.19 | g | 13.80 | a | 21.29 | b | 37.58 | 50.61 | 63.74 | g | 64.81 | d | 65.71 | j | 57.00 | i | 46.03 | m | 26.83 | o | 19.44 | m | 37.62 | g | ||
1997 | 11.04 | e | 19.09 | a | 27.13 | a | 41.64 | b | 47.98 | d | 64.92 | l | 66.44 | w | 60.62 | s | 57.14 | s | 43.81 | o | 28.27 | q | 29.61 | q | 29.38 | g |
1998 | 19.88 | n | 27.73 | o | 34.93 | j | 46.58 | d | 59.13 | l | 59.97 | o | 68.29 | n | 66.38 | s | 57.47 | o | 46.36 | q | 35.60 | t | 36.83 | y | 46.58 | k |
1999 | 5.95 | t | 23.83 | m | 31.59 | o | 47.69 | f | 57.77 | p | 61.97 | l | 69.25 | o | 64.27 | p | 54.10 | o | 43.82 | t | 40.87 | o | 23.07 | x | ----- | z |
2000 | 14.64 | t | 25.71 | q | 37.22 | f | 41.60 | a | 58.38 | k | 62.33 | o | 66.50 | q | 65.50 | o | 55.08 | r | 50.50 | p | 35.25 | r | 8.69 | w | 41.60 | k |
2001 | 18.42 | s | 16.36 | q | 26.36 | m | 44.87 | g | 57.60 | k | 63.65 | q | 68.16 | o | 68.12 | n | 55.19 | n | 45.42 | r | 37.12 | r | 30.36 | x | ----- | z |
2002 | 21.71 | n | 21.50 | p | 25.41 | n | 40.38 | e | 48.81 | j | 64.47 | l | 69.82 | l | 64.70 | i | 60.12 | n | 42.78 | o | 32.30 | j | 29.45 | u | 40.38 | k |
2003 | 12.85 | n | 9.06 | l | 23.96 | q | 35.33 | r | 53.86 | q | 60.57 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 11.46 | 15.64 | 27.31 | 42.08 | 53.43 | 62.99 | 67.34 | 64.55 | 56.01 | 45.80 | 31.75 | 18.40 | 40.98 | |||||||||||||
S.D. | 5.69 | 5.34 | 4.58 | 3.15 | 3.48 | 2.44 | 2.21 | 2.27 | 2.30 | 3.38 | 3.37 | 4.86 | 1.53 | |||||||||||||
SKEW | -0.04 | 0.25 | 0.11 | 0.00 | 0.42 | -0.55 | -0.03 | 0.55 | -0.43 | 0.65 | -0.51 | -0.40 | 1.43 | |||||||||||||
MAX | 22.05 | 27.92 | 37.40 | 47.53 | 62.15 | 66.93 | 71.36 | 70.03 | 59.47 | 53.74 | 37.17 | 26.89 | 44.96 | |||||||||||||
MIN | 1.69 | 7.37 | 17.11 | 35.72 | 47.98 | 56.09 | 63.32 | 60.85 | 51.62 | 40.25 | 24.12 | 8.32 | 39.10 | |||||||||||||
YRS | 30 | 33 | 34 | 38 | 35 | 27 | 28 | 23 | 28 | 25 | 28 | 24 | 12 |