Saint Charles 3SSW DIVISION: STATION #7255 DATE OF RUN COUNTY: PERIOD ANALYSIS FOR 1971 -1999 ( 26 YEARS) 11/17/04 EXTREME SNOWFALL YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL 1971 4.0 1.8 7.5 .2 .0 .0 .0 .0 .0 .0 1.5 7.6 23.1 1972 4.0 3.0 3.5 2.0 .0 .0 .0 .0 .0 .0 1.5 6.5 24.4 1973 .6 3.0 11.5 2.9 .0 .0 .0 .0 .0 .0 .0 6.0 14.4 1974 4.0 5.0 3.0 .0 .0 .0 .0 .0 .0 .0 2.0 3.0 11.8 1975 1.5 2.0 4.0 8.9 .0 .0 .0 .0 .0 .0 7.0 8.0 20.9 1976 4.0 5.0 2.0 .1 .0 .0 .0 .0 .0 .0 .5 3.0 24.8 1977 4.0 1.0 7.2 .5 .0 .0 .0 .0 .0 .0 3.0 4.0 9.6 1978 17.5 1.5 1.7 .0 .0 .0 .0 .0 .0 .0 2.3 2.5 30.5 1979 9.5 1.5 3.3 1.1 .0 .0 .0 .0 .0 .0 2.0 3.0 20.4 1980 4.0 2.0 6.4 1.0 .0 .0 .0 .0 .0 .0 .3 12.0 13.0 1981 2.9 6.0 .0 .0 .0 .0 .0 .0 .0 .0 .0 3.3 13.5 1982 4.0 7.0 2.0 4.0 .0 .0 .0 .0 .0 .0 .0 4.0 15.5 1983 3.0 1.5 12.0 3.0 .0 .0 .0 .0 .0 .0 2.0 6.0 21.0 1984 2.0 3.0 2.0 .0 .0 .0 .0 .0 .0 .0 .0 3.0 14.5 1988 2.5 2.5 1.4 .1 .0 .0 .0 .0 .0 .0 .0 3.8 17.9 1989 3.0 3.0 4.0 1.0 .0 .0 .0 .0 .0 .0 4.5 2.0 9.0 1990 4.0 6.0 1.0 .0 .0 .0 .0 .0 .0 .0 .0 3.0 15.5 1991 7.0 5.0 1.5 .0 .0 .0 .0 .0 .0 .0 6.0 5.0 11.5 1992 2.0 2.0 7.0 1.5 .0 .0 .0 .0 .0 1.5 1.5 3.0 15.5 1993 4.0 7.5 3.5 5.5 .0 .0 .0 .0 .0 .0 .6 1.5 13.5 1994 5.0 6.0 3.0 .0 .0 .0 .0 .0 .0 .0 .5 7.0 21.0 1995 6.0 3.5 1.5 .0 .0 .0 .0 .0 .0 .0 2.0 3.0 15.0 1996 2.5 3.5 4.0 1.0 .0 .0 .0 .0 .0 .0 1.0 2.5 13.8 1997 10.0 3.5 2.0 3.0 .0 .0 .0 .0 .0 6.0 .5 1.9 23.4 1998 2.8 .0 4.5 .0 .0 .0 .0 .0 .0 .0 .0 1.1 11.4 1999 8.0 .5 4.2 .0 .0 .0 .0 .0 .0 .0 .0 2.1 26.5 NON-ZERO 26 25 25 16 0 0 0 0 0 2 18 26 26 ZEROES 0 1 1 10 26 26 26 26 26 24 8 0 0 PROB OF ZERO .00 .04 .04 .38 1.00 1.00 1.00 1.00 1.00 .92 .31 .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 4.68 3.45 4.15 2.24 .00 .00 .00 .00 .00 3.75 2.15 4.15 17.36 VARIANCE 12.05 3.86 8.74 5.50 .00 .00 .00 .00 .00 10.13 3.60 6.21 32.17 STND DEV 3.47 1.96 2.96 2.35 .00 .00 .00 .00 .00 3.18 1.90 2.49 5.67 SKEW 2.18 .53 1.37 1.58 .00 .00 .00 .00 .00 .00 1.40 1.41 .54 KURTOSIS 8.32 2.18 4.21 5.10 .00 .00 .00 .00 .00 1.00 4.05 4.86 2.35 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 EXTREME SNOWFALL 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 4.68 3.45 4.15 2.24 .00 .00 .00 .00 .00 3.75 2.15 4.15 17.36 VARIANCE 12.05 3.86 8.74 5.50 .00 .00 .00 .00 .00 10.13 3.60 6.21 32.17 STND DEV 3.47 1.96 2.96 2.35 .00 .00 .00 .00 .00 3.18 1.90 2.49 5.67 SKEW 2.18 .53 1.37 1.58 .00 .00 .00 .00 .00 .00 1.40 1.41 .54 KURTOSIS 8.32 2.18 4.21 5.10 .00 .00 .00 .00 .00 1.00 4.05 4.86 2.35 GAMMA 2.552 2.905 2.470 .926 .000 .000 .000 .000 .000 999.000 1.549 3.432 10.022 BETA 1.836 1.188 1.679 2.415 .000 .000 .000 .000 .000 999.000 1.388 1.208 1.732 PROB OF ZERO .00 .04 .04 .38 1.00 1.00 1.00 1.00 1.00 .92 .31 .00 .00 LEVELS PROBABILITY PERCENTILE VALUES 01 .5 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .7 7.2 05 1.1 .5 .5 .0 .0 .0 .0 .0 .0 .0 .0 1.3 9.4 10 1.5 1.0 1.1 .0 .0 .0 .0 .0 .0 .0 .0 1.7 10.8 20 2.2 1.6 1.7 .0 .0 .0 .0 .0 .0 .0 .0 2.2 12.7 25 2.5 1.8 2.0 .0 .0 .0 .0 .0 .0 .0 .0 2.5 13.4 30 2.8 2.1 2.3 .0 .0 .0 .0 .0 .0 .0 .0 2.8 14.1 40 3.4 2.5 2.9 .0 .0 .0 .0 .0 .0 .0 .5 3.2 15.5 50 4.1 3.0 3.5 .4 .0 .0 .0 .0 .0 .0 1.0 3.8 16.8 60 4.8 3.5 4.1 .9 .0 .0 .0 .0 .0 .0 1.4 4.3 18.2 70 5.7 4.1 4.9 1.6 .0 .0 .0 .0 .0 .0 2.0 5.0 19.8 75 6.2 4.4 5.4 2.0 .0 .0 .0 .0 .0 .0 2.3 5.4 20.7 80 6.8 4.9 6.0 2.5 .0 .0 .0 .0 .0 .0 2.7 5.8 21.7 90 8.6 6.1 7.6 4.1 .0 .0 .0 .0 .0 .0 3.8 7.1 24.7 95 10.3 7.2 9.1 5.7 .0 .0 .0 .0 .0 1.0 5.0 8.4 27.3 99 14.0 9.5 12.5 9.6 .0 .0 .0 .0 .0 4.8 7.4 11.0 32.6