SAINT IGNACE DIVISION: 2 STATION #7274 DATE OF RUN COUNTY: MACKINAC 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 3.2 4.0 1.1 .0 .0 .0 .0 .0 .0 .0 .0 4.8 12.3 1982 9.7 3.1 2.0 1.3 .0 .0 .0 .0 .0 .0 1.0 2.2 51.8 1983 3.7 2.7 4.5 .0 .0 .0 .0 .0 .0 .0 2.0 6.7 56.6 1984 3.6 2.3 1.5 .0 .0 .0 .0 .0 .0 .0 .3 3.2 26.8 1985 3.5 7.1 6.0 10.5 .0 .0 .0 .0 .0 .0 2.1 10.8 53.3 1986 10.0 7.5 5.5 .0 .0 .0 .0 .0 .0 .0 3.7 10.5 32.9 1987 4.2 4.1 2.0 8.0 .0 .0 .0 .0 .0 .0 .8 7.4 18.8 1988 5.1 2.5 8.0 .0 .0 .0 .0 .0 .0 .0 .0 3.0 27.8 1989 5.5 3.0 4.3 2.0 .0 .0 .0 .0 .0 .0 3.8 9.5 41.5 1990 14.0 6.8 1.0 1.0 .0 .0 .0 .0 .0 .0 1.0 1.8 35.0 1991 2.5 3.5 1.3 2.5 .0 .0 .0 .0 .0 .0 5.0 5.5 21.2 1992 3.5 4.8 1.5 4.5 .0 .0 .0 .0 .0 .0 1.5 4.5 22.1 1993 3.0 2.0 .9 3.5 .0 .0 .0 .0 .0 .0 2.0 3.8 12.4 1994 5.5 7.5 3.0 .0 .0 .0 .0 .0 .0 .0 .0 .5 27.2 1995 3.7 1.0 5.5 .0 .0 .0 .0 .0 .0 .0 5.0 4.0 20.5 1996 5.3 6.0 6.5 2.5 .0 .0 .0 .0 .0 .0 3.0 7.5 46.0 1997 6.0 7.0 10.0 .0 1.0 .0 .0 .0 .0 .0 2.9 2.0 36.8 1998 6.0 .5 6.0 .0 .0 .0 .0 .0 .0 .0 .0 10.0 32.0 1999 15.0 2.5 .4 .0 .0 .0 .0 .0 .0 .0 .0 6.0 65.0 2000 10.0 6.7 .0 .0 .0 .0 .0 .0 .0 .0 5.0 10.5 37.5 NON-ZERO 20 20 19 9 1 0 0 0 0 0 15 20 20 ZEROES 0 0 1 11 19 20 20 20 20 20 5 0 0 PROB OF ZERO .00 .00 .05 .55 .95 1.00 1.00 1.00 1.00 1.00 .25 .00 .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 6.15 4.23 3.74 3.98 1.00 .00 .00 .00 .00 .00 2.61 5.71 33.88 VARIANCE 13.33 5.17 7.70 10.44 .00 .00 .00 .00 .00 .00 2.57 10.67 220.00 STND DEV 3.65 2.27 2.77 3.23 .00 .00 .00 .00 .00 .00 1.60 3.27 14.83 SKEW 1.26 .14 .62 1.11 .00 .00 .00 .00 .00 .00 .28 .23 .45 KURTOSIS 3.47 1.69 2.37 2.87 .00 .00 .00 .00 .00 .00 1.81 1.81 2.34 NOTE: A MISSING OR INCOMPLETE VALUE, INDICATED BY THE FIELD BEING FILLED WITH 9s, IS NOT INCLUDED IN THE ANALYSIS. SAINT IGNACE DIVISION: 2 STATION #7274 DATE OF RUN COUNTY: MACKINAC 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 6.15 4.23 3.74 3.98 1.00 .00 .00 .00 .00 .00 2.61 5.71 33.88 VARIANCE 13.33 5.17 7.70 10.44 .00 .00 .00 .00 .00 .00 2.57 10.67 220.00 STND DEV 3.65 2.27 2.77 3.23 .00 .00 .00 .00 .00 .00 1.60 3.27 14.83 SKEW 1.26 .14 .62 1.11 .00 .00 .00 .00 .00 .00 .28 .23 .45 KURTOSIS 3.47 1.69 2.37 2.87 .00 .00 .00 .00 .00 .00 1.81 1.81 2.34 GAMMA 3.733 2.796 1.678 1.987 999.000 .000 .000 .000 .000 .000 2.221 2.449 5.229 BETA 1.647 1.513 2.226 2.002 999.000 .000 .000 .000 .000 .000 1.173 2.332 6.478 PROB OF ZERO .00 .00 .05 .55 .95 1.00 1.00 1.00 1.00 1.00 .25 .00 .00 LEVELS PROBABILITY PERCENTILE VALUES 01 1.2 .6 .0 .0 .0 .0 .0 .0 .0 .0 .0 .6 9.0 05 2.0 1.1 .0 .0 .0 .0 .0 .0 .0 .0 .0 1.3 13.7 10 2.6 1.5 .5 .0 .0 .0 .0 .0 .0 .0 .0 1.8 16.8 20 3.4 2.1 1.1 .0 .0 .0 .0 .0 .0 .0 .0 2.6 21.2 25 3.8 2.4 1.4 .0 .0 .0 .0 .0 .0 .0 .0 3.0 23.1 30 4.2 2.6 1.7 .0 .0 .0 .0 .0 .0 .0 .6 3.4 24.8 40 4.9 3.2 2.3 .0 .0 .0 .0 .0 .0 .0 1.1 4.2 28.3 50 5.6 3.7 2.9 .0 .0 .0 .0 .0 .0 .0 1.6 5.0 31.7 60 6.4 4.4 3.6 1.1 .0 .0 .0 .0 .0 .0 2.1 5.9 35.5 70 7.3 5.1 4.4 2.4 .0 .0 .0 .0 .0 .0 2.7 6.9 39.8 75 7.9 5.6 4.9 3.0 .0 .0 .0 .0 .0 .0 3.0 7.6 42.4 80 8.5 6.1 5.6 3.7 .0 .0 .0 .0 .0 .0 3.4 8.3 45.3 90 10.4 7.6 7.4 5.7 .0 .0 .0 .0 .0 .0 4.5 10.6 53.7 95 12.1 9.0 9.2 7.4 .0 .0 .0 .0 .0 .0 5.6 12.7 61.3 99 15.7 12.0 13.2 11.1 .8 .0 .0 .0 .0 .0 7.9 17.4 77.4