OLD MISSION 3 SSW DIVISION: 3 STATION #6158 DATE OF RUN COUNTY: GRAND TRAVERSE PERIOD ANALYSIS FOR 1981 -2000 ( 20 YEARS) 11/10/04 EXTREME SNOWFALL YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL 1981 2.9 6.2 2.7 .0 .0 .0 .0 .0 .0 .9 2.7 4.7 39.0 1982 11.3 3.6 4.2 .0 .0 .0 .0 .0 .0 .0 2.2 3.7 72.5 1983 5.4 2.6 5.3 1.6 .0 .0 .0 .0 .0 .0 4.3 4.1 56.8 1984 3.6 2.6 2.1 .0 .0 .0 .0 .0 .0 .0 2.7 3.7 36.0 1985 8.7 12.2 4.6 3.4 .0 .0 .0 .0 .0 .0 4.1 7.1 69.1 1986 4.1 4.8 3.5 .0 .0 .0 .0 .0 .0 .0 3.6 4.6 38.5 1987 5.2 1.8 1.7 3.5 .0 .0 .0 .0 .0 .0 2.0 6.3 27.8 1988 4.2 4.5 2.5 1.0 .0 .0 .0 .0 .0 .0 3.3 4.5 40.7 1989 6.3 6.4 6.1 .0 .0 .0 .0 .0 .0 .0 5.7 6.3 65.1 1990 13.0 5.2 .9 1.1 .0 .0 .0 .0 .0 .0 .0 .0 19.9 1991 5.0 3.8 .0 .9 .0 .0 .0 .0 .0 .0 2.4 7.1 31.8 1992 3.9 3.5 4.4 3.0 .0 .0 .0 .0 .0 .0 5.7 7.1 32.2 1993 7.2 4.2 2.0 2.1 .0 .0 .0 .0 .0 .0 .5 5.4 36.6 1994 .4 6.1 4.1 2.9 .0 .0 .0 .0 .0 .0 2.8 2.2 23.3 1995 5.5 6.6 6.6 .7 .0 .0 .0 .0 .0 .0 6.9 5.7 39.8 1996 7.4 4.2 4.7 3.9 .0 .0 .0 .0 .0 .0 5.8 6.0 44.3 1997 9.3 5.1 5.9 .1 .0 .0 .0 .0 .0 .0 1.8 1.9 71.9 1998 3.9 .6 9.2 .0 .0 .0 .0 .0 .0 .0 .9 2.8 25.9 1999 10.2 1.9 1.6 .0 .0 .0 .0 .0 .0 .0 .0 3.3 39.1 2000 8.6 1.7 .0 .0 .0 .0 .0 .0 .0 .0 3.7 4.4 34.7 NON-ZERO 20 20 18 12 0 0 0 0 0 1 18 19 20 ZEROES 0 0 2 8 20 20 20 20 20 19 2 1 0 PROB OF ZERO .00 .00 .10 .40 1.00 1.00 1.00 1.00 1.00 .95 .10 .05 .00 NOTE: STATISTICS ARE COMPUTED ON THE NON-ZERO VALUES NUMBER YEARS 20 20 20 20 20 20 20 20 20 20 20 20 20 MEAN 6.30 4.38 4.01 2.02 .00 .00 .00 .00 .00 .90 3.39 4.78 42.25 VARIANCE 9.79 6.33 4.53 1.65 .00 .00 .00 .00 .00 .00 3.12 2.64 261.53 STND DEV 3.13 2.52 2.13 1.28 .00 .00 .00 .00 .00 .00 1.77 1.63 16.17 SKEW .39 1.33 .62 .07 .00 .00 .00 .00 .00 .00 .36 -.11 .76 KURTOSIS 2.62 5.76 3.04 1.55 .00 .00 .00 .00 .00 .00 2.34 1.99 2.41 NOTE: A MISSING OR INCOMPLETE VALUE, INDICATED BY THE FIELD BEING FILLED WITH 9s, IS NOT INCLUDED IN THE ANALYSIS. OLD MISSION 3 SSW DIVISION: 3 STATION #6158 DATE OF RUN COUNTY: GRAND TRAVERSE PERIOD ANALYSIS FOR 1981 -2000 ( 20 YEARS) 11/10/04 EXTREME SNOWFALL STATISTICS PARAMETER JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL NUMBER YEARS 20 20 20 20 20 20 20 20 20 20 20 20 20 MEAN 6.30 4.38 4.01 2.02 .00 .00 .00 .00 .00 .90 3.39 4.78 42.25 VARIANCE 9.79 6.33 4.53 1.65 .00 .00 .00 .00 .00 .00 3.12 2.64 261.53 STND DEV 3.13 2.52 2.13 1.28 .00 .00 .00 .00 .00 .00 1.77 1.63 16.17 SKEW .39 1.33 .62 .07 .00 .00 .00 .00 .00 .00 .36 -.11 .76 KURTOSIS 2.62 5.76 3.04 1.55 .00 .00 .00 .00 .00 .00 2.34 1.99 2.41 GAMMA 3.009 3.088 3.459 1.697 .000 .000 .000 .000 .000 999.000 3.145 7.948 7.736 BETA 2.095 1.419 1.158 1.189 .000 .000 .000 .000 .000 999.000 1.079 .602 5.462 PROB OF ZERO .00 .00 .10 .40 1.00 1.00 1.00 1.00 1.00 .95 .10 .05 .00 LEVELS PROBABILITY PERCENTILE VALUES 01 .9 .7 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 15.0 05 1.7 1.2 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 20.7 10 2.3 1.6 .0 .0 .0 .0 .0 .0 .0 .0 .0 2.4 24.3 20 3.2 2.3 1.7 .0 .0 .0 .0 .0 .0 .0 1.3 3.1 29.2 25 3.6 2.5 2.0 .0 .0 .0 .0 .0 .0 .0 1.6 3.4 31.3 30 4.0 2.8 2.3 .0 .0 .0 .0 .0 .0 .0 1.9 3.6 33.2 40 4.8 3.4 2.8 .0 .0 .0 .0 .0 .0 .0 2.3 4.0 36.8 50 5.6 3.9 3.4 .6 .0 .0 .0 .0 .0 .0 2.8 4.5 40.4 60 6.5 4.5 3.9 1.1 .0 .0 .0 .0 .0 .0 3.3 4.9 44.3 70 7.6 5.3 4.6 1.6 .0 .0 .0 .0 .0 .0 3.9 5.4 48.7 75 8.2 5.7 5.0 1.9 .0 .0 .0 .0 .0 .0 4.2 5.7 51.2 80 9.0 6.2 5.4 2.3 .0 .0 .0 .0 .0 .0 4.6 6.0 54.2 90 11.2 7.7 6.7 3.3 .0 .0 .0 .0 .0 .0 5.8 7.0 62.4 95 13.2 9.1 7.9 4.3 .0 .0 .0 .0 .0 .0 6.9 7.8 69.8 99 17.6 12.1 10.4 6.5 .0 .0 .0 .0 .0 .7 9.2 9.3 84.7