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<br />APRIL 15-30,1975-2001 LOG-PEARSON TYPE III CALCS
<br />USGS Gauge Data
<br /> Apr 15-30 $F$7+($F$11'H6) 10^K6 L6/(1,9835'16)
<br /> log10 Probability of log10 April 15-30 Avg Daily
<br />Year AF of AF April 15-30, 1975-2001 K for GS = -0.1 Exceedance of AF Volume, AF Flow, cfs
<br />1975 20,654.19 4.32 -2,39961 99% 3,964144594 9208 290
<br />1976 15,731,14 4.20 Mean 4,354267 -1.67279 95% 4.082309201 12087 381
<br />1977 13,188,29 4.12 Standard Error 0.031288 -1.29178 90% 4,14425287 13940 439
<br />1978 24,894,91 4.40 Median 4.385781 -0.83639 80% 4.218289055 16531 521
<br />1979 35,802.18 4,55 Mode #N/A -0.51207 70% 4.271016203 18664 588
<br />1980 35,570.11 4.55 Standard Deviation 0.162578 -0.23763 60% 4.315633983 20684 652
<br />1981 20,751.38 4,32 Sample Variance 0,026431 0,01662 50% 4.356969323 22749 717
<br />1982 31,375.00 4.50 Kurtosis 0,116171 0,26882 40% 4,397971378 25002 788
<br />1983 24,309,78 4.39 Skewness -0.538669 0.53624 30% 4.441447864 27634 871
<br />1984 26,955.77 4.43 Range 0,654708 0.84611 20% 4.491825766 31033 978
<br />1985 37,420,71 4.57 Minimum 3.92918 1.27037 10% 4.560800913 36375 1146
<br />1986 28,933.31 4.46 Maximum 4,583889 1,61594 5% 4,616982834 41398 1304
<br />1987 32,876.51 4.52 Sum 117,5652 1 ,99973 2% 4,679378468 47795 1506
<br />1988 24,591.43 4,39 Count 27 2.25258 1% 4.720486199 52540 1656
<br />1989 23,012,57 4.36
<br />1990 17,928.86 4,25
<br />1991 15,060,72 4.18
<br />1992 15,681,55 4.20
<br />1993 18,321.59 4,26
<br /> ~-
<br />1994 18,266,05 4.26
<br />1995 8,495.33 3.93
<br />1996 38,360,89 4.58
<br />1997 36,175.07 4,56
<br />1998 27,461.56 4.44
<br />1999 17,674.97 4,25
<br />2000 25,593.10 4.41
<br />2001 15,165.84 4.18
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