Saint Charles 3SSW DIVISION: STATION #7255 DATE OF RUN COUNTY: PERIOD ANALYSIS FOR 1971 -1999 ( 26 YEARS) 11/17/04 NUMBER OF DAYS WITH PRECIPITATION => .25" YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL 1971 1 1 4 1 2 1 3 3 3 4 0 3 26 1972 1 1 3 1 1 2 3 7 4 3 2 5 33 1973 0 2 3 3 4 3 3 3 1 3 3 3 31 1974 1 2 5 1 7 4 4 3 3 3 2 1 36 1975 4 2 4 3 5 4 2 6 3 0 6 6 45 1976 3 2 8 5 3 4 2 1 3 2 1 1 35 1977 1 0 5 2 2 3 1 3 5 3 2 4 31 1978 2 0 1 3 6 2 3 2 6 1 3 5 34 1979 3 1 2 5 2 4 3 4 0 3 6 1 34 1980 5 1 5 10 3 6 8 3 7 5 1 3 57 1981 0 3 0 7 2 6 4 5 8 4 3 1 43 1982 1 1 3 1 6 4 1 6 3 0 7 5 38 1983 1 1 6 7 7 2 4 2 7 3 4 4 48 1984 0 2 4 7 5 2 2 5 4 4 4 3 42 1988 1 0 3 5 1 1 2 6 5 4 4 2 34 1989 1 0 4 3 4 7 1 5 5 3 4 1 38 1990 4 3 3 3 5 5 4 3 6 6 4 4 50 1991 1 1 7 8 3 6 6 4 2 6 4 3 51 1992 3 2 3 7 2 3 4 3 5 4 5 3 44 1993 5 1 3 5 3 5 5 7 6 3 2 2 47 1994 3 1 2 4 3 5 5 8 6 3 8 1 49 1995 2 0 3 5 2 4 4 5 3 4 5 1 38 1996 3 2 2 6 5 6 3 3 4 4 2 5 45 1997 4 5 4 4 8 3 5 4 6 2 2 1 48 1998 6 4 3 3 3 1 2 3 3 4 2 2 36 1999 5 0 1 8 2 3 3 4 5 2 2 3 38 NON-ZERO 23 20 25 26 26 26 26 26 25 24 25 26 26 ZEROES 3 6 1 0 0 0 0 0 1 2 1 0 0 PROB OF ZERO .12 .23 .04 .00 .00 .00 .00 .00 .04 .08 .04 .00 .00 NOTE: STATISTICS ARE COMPUTED ON THE NON-ZERO VALUES NUMBER YEARS 26 26 26 26 26 26 26 26 26 26 26 26 26 MEAN 2.7 1.9 3.6 4.5 3.7 3.7 3.3 4.2 4.5 3.5 3.5 2.8 40.4 VARIANCE 2.7 1.3 2.8 6.1 3.8 2.9 2.6 3.0 3.0 1.4 3.4 2.5 57.2 STND DEV 1.6 1.1 1.7 2.5 2.0 1.7 1.6 1.7 1.7 1.2 1.9 1.6 7.6 SKEW .5 1.4 .8 .3 .6 .1 .8 .5 .0 .3 .7 .3 .2 KURTOSIS 1.9 4.3 3.5 2.3 2.3 2.1 3.9 2.5 2.3 3.3 2.8 2.0 2.3 NOTE: A MISSING OR INCOMPLETE VALUE, INDICATED BY THE FIELD BEING FILLED WITH 9s, IS NOT INCLUDED IN THE ANALYSIS. ????? DIVISION: STATION #7255 DATE OF RUN COUNTY: PERIOD ANALYSIS FOR 1971 -1999 ( 26 YEARS) 11/17/04 NUMBER OF DAYS WITH PRECIPITATION => .25" STATISTICS PARAMETER JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL NUMBER YEARS 26 26 26 26 26 26 26 26 26 26 26 26 26 MEAN 2.7 1.9 3.6 4.5 3.7 3.7 3.3 4.2 4.5 3.5 3.5 2.8 40.4 VARIANCE 2.7 1.3 2.8 6.1 3.8 2.9 2.6 3.0 3.0 1.4 3.4 2.5 57.2 STND DEV 1.6 1.1 1.7 2.5 2.0 1.7 1.6 1.7 1.7 1.2 1.9 1.6 7.6 SKEW .5 1.4 .8 .3 .6 .1 .8 .5 .0 .3 .7 .3 .2 KURTOSIS 1.9 4.3 3.5 2.3 2.3 2.1 3.9 2.5 2.3 3.3 2.8 2.0 2.3 SIGMA 3.861 1.644 3.226 5.812 4.113 6.169 3.116 4.086 6.240 2.774 3.894 3.707 27.207 ETA 2.200 1.360 1.765 2.200 1.945 3.600 1.765 2.200 3.600 2.200 1.945 2.200 3.600 MU -.767 .395 .769 -.647 .045 -1.867 .572 .535 -1.103 1.002 .067 -.475 15.907 SCALE FACTOR 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 TRANS FACTOR .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 PROB OF ZERO .12 .23 .04 .00 .00 .00 .00 .00 .04 .08 .04 .00 .00 LEVELS PROBABILITY PERCENTILE VALUES 01 0 0 0 0 0 0 1 1 0 0 0 0 23 05 0 0 1 1 1 1 1 2 1 0 0 0 28 10 0 0 1 1 1 1 1 2 2 2 1 1 30 20 1 0 2 2 2 2 2 3 3 2 2 1 34 25 1 1 2 3 2 2 2 3 3 2 2 2 35 30 1 1 2 3 2 3 2 3 3 3 2 2 36 40 2 1 3 4 3 3 3 4 4 3 3 2 38 50 2 1 3 4 3 4 3 4 4 3 3 3 40 60 3 2 4 5 4 4 4 4 5 4 4 3 42 70 3 2 4 6 5 5 4 5 5 4 4 4 45 75 4 2 5 6 5 5 4 5 6 4 5 4 46 80 4 2 5 7 5 5 5 6 6 4 5 4 47 90 5 3 6 8 6 6 6 7 7 5 6 5 50 95 5 4 7 9 7 7 6 7 7 6 7 6 53 99 7 5 8 11 9 8 8 9 8 7 9 7 57