Number of days with precipitation of .50 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 => .50"
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1981 0 0 0 2 2 4 0 2 0 2 1 2 15
1982 2 0 0 3 2 0 3 2 2 3 1 3 21
1983 0 1 3 2 4 3 0 2 6 2 3 2 28
1984 0 2 2 1 0 3 1 2 2 0 0 1 14
1986 0 0 3 1 0 1 3 3 2 2 2 0 17
1987 0 0 1 1 3 1 2 5 2 2 1 2 20
1988 0 0 0 0 0 0 1 5 2 1 2 0 11
1989 0 0 1 0 1 4 1 1 1 0 0 0 9
1990 0 1 0 1 2 4 3 0 3 2 1 0 17
1991 0 1 1 2 2 2 5 0 1 2 4 0 20
1992 0 0 0 1 1 0 3 3 2 1 2 1 14
1994 0 0 2 1 1 1 2 2 2 0 1 0 12
1995 0 0 2 1 0 0 2 3 1 3 1 0 13
1996 1 0 0 2 1 5 3 3 1 2 0 2 20
1997 3 0 0 0 1 0 2 2 2 1 0 0 11
1998 0 0 0 0 2 2 0 2 0 1 3 0 10
NON-ZERO 3 4 8 12 12 11 13 14 14 13 12 7 16
ZEROES 13 12 8 4 4 5 3 2 2 3 4 9 0
PROB OF ZERO .81 .75 .50 .25 .25 .31 .19 .13 .13 .19 .25 .56 .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 2.0 1.3 1.9 1.5 1.8 2.7 2.4 2.6 2.1 1.8 1.8 1.9 15.8
VARIANCE 1.0 .3 .7 .5 .9 2.0 1.3 1.3 1.6 .5 1.1 .5 25.8
STND DEV 1.0 .5 .8 .7 .9 1.4 1.1 1.2 1.3 .7 1.0 .7 5.1
SKEW .0 1.2 .2 .9 1.0 .1 .7 1.1 2.2 .2 .9 .1 .7
KURTOSIS 1.5 2.3 1.7 2.8 3.4 1.7 3.4 3.3 7.8 2.2 2.5 2.4 3.1
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 => .50" 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 2.0 1.3 1.9 1.5 1.8 2.7 2.4 2.6 2.1 1.8 1.8 1.9 15.8
VARIANCE 1.0 .3 .7 .5 .9 2.0 1.3 1.3 1.6 .5 1.1 .5 25.8
STND DEV 1.0 .5 .8 .7 .9 1.4 1.1 1.2 1.3 .7 1.0 .7 5.1
SKEW .0 1.2 .2 .9 1.0 .1 .7 1.1 2.2 .2 .9 .1 .7
KURTOSIS 1.5 2.3 1.7 2.8 3.4 1.7 3.4 3.3 7.8 2.2 2.5 2.4 3.1
SIGMA 999.000 999.000 3.002 1.294 1.800 5.110 2.358 1.690 1.269 2.477 1.977 2.482 9.751
ETA 999.000 999.000 3.600 1.765 1.765 3.600 1.945 1.360 1.000 3.600 1.765 3.600 1.765
MU 999.000 999.000 -.830 .348 .231 -1.877 .293 1.095 .803 -.386 .073 -.379 7.070
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 .81 .75 .50 .25 .25 .31 .19 .13 .13 .19 .25 .56 .00
LEVELS PROBABILITY PERCENTILE VALUES
01 0 0 0 0 0 0 0 0 0 0 0 0 8
05 0 0 0 0 0 0 0 0 0 0 0 0 9
10 0 0 0 0 0 0 0 0 0 0 0 0 10
20 0 0 0 0 0 0 1 1 1 0 0 0 11
25 0 0 0 0 0 0 1 2 1 1 0 0 12
30 0 0 0 1 1 0 1 2 1 1 1 0 13
40 0 0 0 1 1 1 2 2 1 1 1 0 14
50 0 0 0 1 1 2 2 2 2 2 1 0 15
60 0 0 1 1 2 2 2 3 2 2 2 1 16
70 0 0 2 2 2 3 3 3 2 2 2 2 18
75 0 0 2 2 2 3 3 3 2 2 2 2 19
80 0 1 2 2 2 4 3 3 3 2 2 2 20
90 1 1 3 2 3 4 4 4 4 3 3 2 23
95 2 1 3 3 3 5 4 5 4 3 4 3 25
99 3 2 4 3 4 6 5 6 6 3 5 3 30
