CHELSEA DIVISION: 10 STATION #1502 DATE OF RUN COUNTY: WASHTENAW PERIOD ANALYSIS FOR 1978 -1999 ( 22 YEARS) 11/03/04 SNOWFALL (INCHES) YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL 1978 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 4.0 7.0 11.0 1979 16.5 3.5 1.1 1.0 .0 .0 .0 .0 .0 .0 2.0 2.0 26.1 1980 4.0 5.0 16.0 .0 .0 .0 .0 .0 .0 .5 2.0 6.0 33.5 1981 8.7 13.7 .0 .0 .0 .0 .0 .0 .0 .0 1.7 12.0 36.1 1982 9.6 20.1 9.5 7.0 .0 .0 .0 .0 .0 .0 .8 1.5 48.5 1983 1.5 3.6 8.4 8.0 .0 .0 .0 .0 .0 .0 1.6 17.2 40.3 1984 8.0 2.8 8.1 .0 .0 .0 .0 .0 .0 .0 1.0 7.2 27.1 1985 15.1 10.9 4.5 .0 .0 .0 .0 .0 .0 .0 2.6 10.9 44.0 1986 9.4 11.2 4.5 1.0 .0 .0 .0 .0 .0 .0 5.2 5.4 36.7 1987 21.0 .8 5.0 1.5 .0 .0 .0 .0 .0 .8 .0 11.5 40.6 1988 4.1 20.9 3.6 .2 .0 .0 .0 .0 .0 .0 .0 8.5 37.3 1989 4.5 7.3 1.1 .3 .0 .0 .0 .0 .0 2.5 .0 10.2 25.9 1990 2.0 13.3 4.3 .8 .0 .0 .0 .0 .0 .0 .0 11.3 31.7 1991 7.4 8.6 .0 .0 .0 .0 .0 .0 .0 .0 .4 7.7 24.1 1992 19.5 1.7 10.9 1.6 .0 .0 .0 .0 .0 .8 .0 4.5 39.0 1993 9.0 11.9 9.2 4.0 .0 .0 .0 .0 .0 .0 1.7 5.8 41.6 1994 .0 17.1 3.7 .0 .0 .0 .0 .0 .0 .0 .0 .0 20.8 1995 15.1 5.1 3.7 .0 .0 .0 .0 .0 .0 .0 .0 6.4 30.3 1996 3.7 3.9 9.8 .0 .0 .0 .0 .0 .0 .0 .0 10.6 28.0 1997 17.0 4.1 2.0 .0 .0 .0 .0 .0 .0 .0 5.2 7.0 35.3 1998 6.3 .0 7.5 .0 .0 .0 .0 .0 .0 .0 .0 1.4 15.2 1999 25.3 7.0 11.6 .0 .0 .0 .0 .0 .0 .0 .0 6.7 50.6 NON-ZERO 20 20 19 10 0 0 0 0 0 4 12 21 22 ZEROES 2 2 3 12 22 22 22 22 22 18 10 1 0 PROB OF ZERO .09 .09 .14 .55 1.00 1.00 1.00 1.00 1.00 .82 .45 .05 .00 NOTE: STATISTICS ARE COMPUTED ON THE NON-ZERO VALUES NUMBER YEARS 22 22 22 22 22 22 22 22 22 22 22 22 22 MEAN 10.39 8.63 6.55 2.54 .00 .00 .00 .00 .00 1.15 2.35 7.66 32.90 VARIANCE 46.86 36.41 15.98 8.01 .00 .00 .00 .00 .00 .83 2.61 14.91 101.66 STND DEV 6.85 6.03 4.00 2.83 .00 .00 .00 .00 .00 .91 1.62 3.86 10.08 SKEW .60 .66 .55 1.12 .00 .00 .00 .00 .00 1.07 .81 .37 -.32 KURTOSIS 2.31 2.35 2.69 2.63 .00 .00 .00 .00 .00 2.28 2.38 3.17 2.65 NOTE: A MISSING OR INCOMPLETE VALUE, INDICATED BY THE FIELD BEING FILLED WITH 9s, IS NOT INCLUDED IN THE ANALYSIS. CHELSEA DIVISION: 10 STATION #1502 DATE OF RUN COUNTY: WASHTENAW PERIOD ANALYSIS FOR 1978 -1999 ( 22 YEARS) 11/03/04 SNOWFALL (INCHES) STATISTICS PARAMETER JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL NUMBER YEARS 22 22 22 22 22 22 22 22 22 22 22 22 22 MEAN 10.39 8.63 6.55 2.54 .00 .00 .00 .00 .00 1.15 2.35 7.66 32.90 VARIANCE 46.86 36.41 15.98 8.01 .00 .00 .00 .00 .00 .83 2.61 14.91 101.66 STND DEV 6.85 6.03 4.00 2.83 .00 .00 .00 .00 .00 .91 1.62 3.86 10.08 SKEW .60 .66 .55 1.12 .00 .00 .00 .00 .00 1.07 .81 .37 -.32 KURTOSIS 2.31 2.35 2.69 2.63 .00 .00 .00 .00 .00 2.28 2.38 3.17 2.65 GAMMA 2.154 1.886 2.386 .956 .000 .000 .000 .000 .000 999.000 2.271 3.159 9.059 BETA 4.822 4.573 2.746 2.657 .000 .000 .000 .000 .000 999.000 1.035 2.424 3.631 PROB OF ZERO .09 .09 .14 .55 1.00 1.00 1.00 1.00 1.00 .82 .45 .05 .00 LEVELS PROBABILITY PERCENTILE VALUES 01 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 12.9 05 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .9 17.2 10 .9 .6 .0 .0 .0 .0 .0 .0 .0 .0 .0 2.3 19.9 20 3.3 2.4 1.7 .0 .0 .0 .0 .0 .0 .0 .0 3.6 23.5 25 4.1 3.1 2.4 .0 .0 .0 .0 .0 .0 .0 .0 4.1 25.0 30 4.9 3.8 2.9 .0 .0 .0 .0 .0 .0 .0 .0 4.7 26.4 40 6.4 5.1 3.9 .0 .0 .0 .0 .0 .0 .0 .0 5.6 29.1 50 8.0 6.5 4.9 .0 .0 .0 .0 .0 .0 .0 .6 6.6 31.7 60 9.8 8.0 6.0 .3 .0 .0 .0 .0 .0 .0 1.3 7.7 34.5 70 12.0 9.9 7.3 1.0 .0 .0 .0 .0 .0 .0 1.8 9.0 37.6 75 13.3 11.0 8.1 1.5 .0 .0 .0 .0 .0 .0 2.2 9.8 39.5 80 14.8 12.4 9.0 2.1 .0 .0 .0 .0 .0 .0 2.5 10.7 41.6 90 19.3 16.4 11.7 3.9 .0 .0 .0 .0 .0 .6 3.6 13.3 47.4 95 23.5 20.2 14.2 5.7 .0 .0 .0 .0 .0 .8 4.6 15.7 52.7 99 32.8 28.1 19.7 9.9 .0 .0 .0 .0 .0 2.1 6.6 20.9 63.5