SAINT IGNACE DIVISION: 2 STATION #7274 DATE OF RUN COUNTY: MACKINAC PERIOD ANALYSIS FOR 1981 -2000 ( 20 YEARS) 11/10/04 EXTREME PRECIPITATION YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL 1981 .20 .41 .25 1.10 .25 1.15 .38 .29 .70 .90 .81 .45 4.77 1982 .45 .07 .30 .65 .32 .80 .39 1.65 .85 1.23 .40 .97 4.33 1983 .26 .36 .45 .49 1.10 .23 .43 .64 .99 1.23 .53 .56 5.03 1984 .11 .65 1.00 .49 .68 1.55 .97 1.35 .97 1.57 1.22 1.30 4.52 1985 .27 .58 1.12 .87 .61 .93 1.42 1.02 1.28 .85 1.27 .84 4.72 1986 .70 .50 .90 .65 .58 .60 .76 .97 1.42 .94 .31 .28 7.90 1987 .20 .50 .33 .38 1.40 2.35 .62 1.22 .51 1.02 1.53 .60 4.76 1988 .50 .50 .36 .77 .30 .30 2.43 1.14 .45 .79 2.26 .19 6.26 1989 .90 .20 .30 .21 1.60 1.24 .50 .70 .63 .40 .90 .20 3.61 1990 .85 .30 .62 .47 .99 1.02 1.46 .87 .95 .58 .46 .25 5.00 1991 .75 .20 1.05 .74 1.42 .82 1.41 .21 .56 1.32 .51 .24 4.97 1992 .42 .30 .80 .45 .25 .75 .69 .84 1.20 .95 1.94 .57 4.75 1993 .17 .07 .20 1.21 .55 .80 .75 .85 1.56 .94 1.05 .40 3.35 1994 .75 .18 .50 .37 .42 1.50 1.94 1.32 .95 1.20 .86 .09 4.70 1995 .30 .22 .50 1.50 .97 .52 1.55 .86 .72 1.21 .74 .50 5.09 1996 .75 .32 .93 .69 .42 1.34 1.75 .70 1.13 1.10 .74 .86 5.63 1997 1.08 .45 .80 .65 1.06 1.30 1.52 1.02 1.23 .70 .55 .50 3.03 1998 .30 .02 .87 .20 1.52 .55 .60 1.95 .80 1.31 1.35 .46 3.57 1999 .52 .47 .20 .46 .90 1.20 1.55 .35 .64 .58 .36 .47 5.68 2000 .85 .50 .57 .41 .80 1.27 .80 .23 .26 .30 .80 .23 3.39 NON-ZERO 20 20 20 20 20 20 20 20 20 20 20 20 20 ZEROES 0 0 0 0 0 0 0 0 0 0 0 0 0 PROB OF ZERO .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .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 .517 .340 .603 .638 .807 1.011 1.096 .909 .890 .956 .929 .498 4.753 VARIANCE .084 .033 .094 .109 .193 .244 .349 .210 .117 .109 .281 .092 1.255 STND DEV .291 .181 .306 .330 .439 .493 .591 .458 .342 .330 .530 .303 1.120 SKEW .283 -.180 .220 1.061 .386 .722 .524 .354 .165 -.277 1.036 1.015 .864 KURTOSIS 1.799 1.988 1.630 3.699 1.931 3.879 2.284 2.836 2.298 2.444 3.379 3.643 4.379 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 PRECIPITATION 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 .517 .340 .603 .638 .807 1.011 1.096 .909 .890 .956 .929 .498 4.753 VARIANCE .084 .033 .094 .109 .193 .244 .349 .210 .117 .109 .281 .092 1.255 STND DEV .291 .181 .306 .330 .439 .493 .591 .458 .342 .330 .530 .303 1.120 SKEW .283 -.180 .220 1.061 .386 .722 .524 .354 .165 -.277 1.036 1.015 .864 KURTOSIS 1.799 1.988 1.630 3.699 1.931 3.879 2.284 2.836 2.298 2.444 3.379 3.643 4.379 GAMMA 2.909 2.211 3.685 4.216 3.260 3.990 3.518 3.373 6.273 7.087 3.570 2.883 19.966 BETA .178 .154 .163 .151 .248 .253 .312 .269 .142 .135 .260 .173 .238 PROB OF ZERO .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 LEVELS PROBABILITY PERCENTILE VALUES 01 .07 .03 .11 .14 .13 .21 .20 .15 .27 .32 .17 .07 2.63 05 .14 .07 .19 .23 .24 .34 .34 .27 .40 .45 .29 .13 3.15 10 .19 .10 .25 .29 .31 .44 .44 .36 .48 .53 .38 .18 3.45 20 .26 .15 .34 .37 .43 .58 .60 .49 .59 .65 .51 .25 3.84 25 .29 .17 .37 .41 .48 .64 .67 .55 .63 .70 .57 .28 4.00 30 .33 .19 .41 .45 .53 .70 .73 .60 .68 .74 .62 .31 4.14 40 .39 .24 .48 .52 .62 .81 .86 .71 .76 .83 .73 .38 4.41 50 .46 .29 .55 .59 .73 .93 .99 .82 .84 .91 .84 .44 4.67 60 .53 .35 .63 .67 .84 1.05 1.14 .94 .93 1.00 .97 .51 4.94 70 .62 .41 .72 .76 .97 1.20 1.31 1.09 1.04 1.11 1.11 .60 5.24 75 .67 .45 .77 .81 1.05 1.29 1.41 1.18 1.10 1.17 1.20 .65 5.41 80 .74 .50 .84 .87 1.14 1.39 1.53 1.28 1.17 1.24 1.30 .71 5.61 90 .92 .65 1.02 1.05 1.41 1.68 1.88 1.57 1.36 1.44 1.59 .89 6.14 95 1.08 .78 1.19 1.22 1.65 1.94 2.20 1.85 1.54 1.61 1.86 1.05 6.60 99 1.43 1.08 1.55 1.57 2.19 2.45 2.88 2.43 1.92 1.98 2.43 1.38 7.44