Number of days with precipitation of .25 inch or above(Weibull)
BIG BAY 3 SE
DIVISION: 1 STATION #0770 DATE OF RUN
COUNTY: MARQUETTE PERIOD ANALYSIS FOR 1981 -1998 ( 16 YEARS) 11/17/04
NUMBER OF DAYS WITH PRECIPITATION => .25"
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1981 1 2 1 3 3 4 0 3 1 6 1 7 32
1982 4 0 0 5 4 1 6 5 6 5 4 3 43
1983 4 1 5 3 4 5 1 5 7 5 6 3 49
1984 1 3 4 1 1 3 2 3 5 3 2 3 31
1986 3 2 5 1 0 5 4 3 6 4 3 0 36
1987 1 1 2 2 6 3 6 8 3 7 3 4 46
1988 0 0 2 0 2 2 1 10 4 6 5 2 34
1989 0 2 2 2 2 5 2 2 1 3 1 1 23
1990 1 1 1 1 3 5 5 0 8 6 1 0 32
1991 0 2 4 5 3 3 8 1 5 5 7 1 44
1992 0 0 2 1 3 0 7 5 3 1 2 3 27
1994 1 0 2 3 3 4 2 4 4 2 2 0 27
1995 2 0 4 2 3 2 7 3 7 11 2 2 45
1996 1 3 1 6 2 9 7 5 5 5 2 5 51
1997 6 1 4 2 4 1 4 4 2 4 4 3 39
1998 0 1 2 2 2 4 1 3 2 2 6 3 28
NON-ZERO 11 11 15 15 15 15 15 15 16 16 16 13 16
ZEROES 5 5 1 1 1 1 1 1 0 0 0 3 0
PROB OF ZERO .31 .31 .06 .06 .06 .06 .06 .06 .00 .00 .00 .19 .00
NOTE: STATISTICS ARE COMPUTED ON THE NON-ZERO VALUES
NUMBER YEARS 16 16 16 16 16 16 16 16 16 16 16 16 16
MEAN 2.3 1.7 2.7 2.6 3.0 3.7 4.2 4.3 4.3 4.7 3.2 3.1 36.7
VARIANCE 3.0 .6 2.1 2.5 1.4 4.1 6.5 5.2 4.8 5.7 3.8 2.6 76.4
STND DEV 1.7 .8 1.4 1.6 1.2 2.0 2.5 2.3 2.2 2.4 1.9 1.6 8.7
SKEW 1.0 .5 .3 .9 .8 .9 .0 1.2 -.0 .9 .6 1.0 .1
KURTOSIS 2.7 1.9 1.6 2.7 3.9 4.2 1.5 4.0 1.9 4.2 2.1 4.0 1.7
NOTE: A MISSING OR INCOMPLETE VALUE, INDICATED BY THE FIELD BEING FILLED WITH 9s, IS NOT INCLUDED IN THE ANALYSIS.
BIG BAY 3 SE
DIVISION: 1 STATION #0770 DATE OF RUN
COUNTY: MARQUETTE PERIOD ANALYSIS FOR 1981 -1998 ( 16 YEARS) 11/17/04
NUMBER OF DAYS WITH PRECIPITATION => .25" STATISTICS
PARAMETER JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
NUMBER YEARS 16 16 16 16 16 16 16 16 16 16 16 16 16
MEAN 2.3 1.7 2.7 2.6 3.0 3.7 4.2 4.3 4.3 4.7 3.2 3.1 36.7
VARIANCE 3.0 .6 2.1 2.5 1.4 4.1 6.5 5.2 4.8 5.7 3.8 2.6 76.4
STND DEV 1.7 .8 1.4 1.6 1.2 2.0 2.5 2.3 2.2 2.4 1.9 1.6 8.7
SKEW 1.0 .5 .3 .9 .8 .9 .0 1.2 -.0 .9 .6 1.0 .1
KURTOSIS 2.7 1.9 1.6 2.7 3.9 4.2 1.5 4.0 1.9 4.2 2.1 4.0 1.7
SIGMA 3.335 1.850 3.383 3.061 2.294 3.871 9.140 3.352 7.849 4.581 4.081 3.082 31.431
ETA 1.765 2.200 2.200 1.765 1.765 1.765 3.600 1.360 3.600 1.765 1.945 1.765 3.600
MU -.696 .089 -.263 -.125 .958 .287 -4.036 1.197 -2.761 .609 -.431 .334 8.364
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 .31 .31 .06 .06 .06 .06 .06 .06 .00 .00 .00 .19 .00
LEVELS PROBABILITY PERCENTILE VALUES
01 0 0 0 0 0 0 0 0 0 1 0 0 17
05 0 0 0 0 0 0 0 0 1 1 0 0 22
10 0 0 1 0 1 1 0 2 1 2 1 0 25
20 0 0 1 1 2 2 1 2 2 3 1 1 29
25 0 0 1 1 2 2 2 2 3 3 2 1 31
30 0 0 2 1 2 2 2 3 3 3 2 1 32
40 0 1 2 2 2 3 3 3 4 4 2 2 34
50 1 1 2 2 3 3 4 4 4 4 3 2 37
60 2 1 3 3 3 4 5 4 5 5 3 3 39
70 2 2 3 3 3 4 5 5 6 6 4 3 41
75 3 2 4 3 4 5 6 5 6 6 4 4 43
80 3 2 4 4 4 5 6 6 6 7 5 4 44
90 4 3 5 5 5 6 7 7 7 8 6 5 48
95 5 3 5 6 5 7 8 9 8 9 7 6 51
99 7 4 6 7 6 9 10 11 9 11 9 7 56
