CHELSEA DIVISION: 10 STATION #1502 DATE OF RUN COUNTY: WASHTENAW PERIOD ANALYSIS FOR 1978 -1999 ( 22 YEARS) 11/03/04 NUMBER OF DAYS WITH PRECIPITATION => .10" YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL 1978 0 0 0 0 6 6 6 4 9 5 7 6 49 1979 5 1 4 9 7 5 8 9 1 5 9 6 69 1980 3 2 8 8 5 5 8 9 7 6 2 9 72 1981 1 5 2 7 8 6 6 6 9 7 3 3 63 1982 6 6 6 3 4 5 8 4 7 3 9 7 68 1983 2 5 7 11 8 4 7 3 6 6 8 6 73 1984 1 2 5 6 6 3 5 3 6 4 6 8 55 1985 6 6 7 3 4 4 5 7 6 8 10 4 70 1986 4 8 2 7 6 8 8 5 9 9 5 4 75 1987 5 0 4 5 5 4 6 8 11 11 6 8 73 1988 2 5 3 4 1 2 6 8 6 10 12 3 62 1989 4 3 4 7 5 8 6 5 6 4 6 4 62 1990 7 9 8 6 5 8 7 5 6 7 5 9 82 1991 4 3 7 6 5 5 7 7 2 9 8 7 70 1992 4 3 6 12 6 4 12 5 8 5 7 5 77 1993 9 5 6 9 5 9 5 5 9 5 9 4 80 1994 5 3 6 5 2 7 5 7 5 5 6 2 58 1995 6 2 5 9 10 4 7 9 5 7 7 5 76 1996 4 3 4 9 4 8 3 4 10 4 7 7 67 1997 4 5 4 5 10 9 6 11 7 2 5 4 72 1998 6 5 9 8 5 8 4 7 7 5 4 2 70 1999 8 4 4 10 7 4 9 8 2 3 2 5 66 NON-ZERO 21 20 21 21 22 22 22 22 22 22 22 22 22 ZEROES 1 2 1 1 0 0 0 0 0 0 0 0 0 PROB OF ZERO .05 .09 .05 .05 .00 .00 .00 .00 .00 .00 .00 .00 .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 4.6 4.3 5.3 7.1 5.6 5.7 6.5 6.3 6.5 5.9 6.5 5.4 68.6 VARIANCE 4.5 4.2 3.8 6.2 4.7 4.3 3.6 4.8 6.5 5.6 6.4 4.4 64.4 STND DEV 2.1 2.0 2.0 2.5 2.2 2.1 1.9 2.2 2.6 2.4 2.5 2.1 8.0 SKEW .1 .6 .1 .1 .2 .1 .8 .3 -.5 .5 .0 .2 -.6 KURTOSIS 2.6 2.9 2.2 2.3 3.3 1.8 4.5 2.2 2.9 2.5 2.7 2.0 3.1 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 NUMBER OF DAYS WITH PRECIPITATION => .10" 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 4.6 4.3 5.3 7.1 5.6 5.7 6.5 6.3 6.5 5.9 6.5 5.4 68.6 VARIANCE 4.5 4.2 3.8 6.2 4.7 4.3 3.6 4.8 6.5 5.6 6.4 4.4 64.4 STND DEV 2.1 2.0 2.0 2.5 2.2 2.1 1.9 2.2 2.6 2.4 2.5 2.1 8.0 SKEW .1 .6 .1 .1 .2 .1 .8 .3 -.5 .5 .0 .2 -.6 KURTOSIS 2.6 2.9 2.2 2.3 3.3 1.8 4.5 2.2 2.9 2.5 2.7 2.0 3.1 SIGMA 7.594 4.310 7.025 8.949 7.813 7.461 3.639 7.879 16.176 5.574 9.069 7.573 70.137 ETA 3.600 1.945 3.600 3.600 3.600 3.600 1.765 3.600 6.950 2.200 3.600 3.600 10.000 MU -2.271 .428 -1.044 -.969 -1.404 -.996 3.306 -.782 -8.580 .973 -1.672 -1.460 1.866 SCALE FACTOR 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 TRANS FACTOR .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 PROB OF ZERO .05 .09 .05 .05 .00 .00 .00 .00 .00 .00 .00 .00 .00 LEVELS PROBABILITY PERCENTILE VALUES 01 0 0 0 0 1 1 4 1 0 2 1 1 46 05 0 0 1 1 2 2 4 3 2 2 2 2 54 10 1 1 2 3 3 3 4 3 3 3 3 3 58 20 2 2 3 5 4 4 5 4 4 4 4 4 62 25 3 2 4 5 4 4 5 5 5 4 5 4 64 30 3 3 4 5 4 5 5 5 5 4 5 4 65 40 4 3 5 6 5 5 6 6 6 5 6 5 67 50 4 4 5 7 6 6 6 6 7 6 7 5 69 60 5 4 6 8 6 6 7 7 7 6 7 6 71 70 6 5 6 8 7 7 7 8 8 7 8 7 73 75 6 5 7 9 7 7 8 8 8 7 8 7 74 80 6 6 7 9 8 8 8 8 9 8 9 7 75 90 7 7 8 10 8 8 9 9 10 9 10 8 78 95 8 8 8 11 9 9 10 10 10 10 11 9 80 99 9 10 10 13 11 10 12 11 12 12 12 10 84