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<br />SYMBOLS <br /> <br />Symbol, explanation: <br /> <br />c ,centroidal position occupied by moth largest observed peak <br />m <br />G, generalized skew coefficient <br />G, historically-adjusted skew coefficient <br />~ '-* ~* ""* <br />G', skew coefficient of frequency curve passing throu~h Q 0.50, Q 0.10, and Q' om <br />1 GI , absolute value of the station skew coefficient <br />G, station skew coefficient <br />Gw' Bulletin 17B skew coefficient estimate used in final log-Pearson Type III frequency curve <br />g, desired skew coefficient <br />H, historical period length <br />K, confidence coefficient <br />KN, 10 percent significance level outlier tests KN values for a normal distribution for sample size N <br />k , Pearson Type III standardized ordinates for desired skew (g) and exceedance probability (p) <br />g,p <br />kp' standard normal frequency factor for probability p <br />k " frequency factor after adjustment with Student-t <br />p <br />1\1, historically-weighted logarithmic mean <br />1\1, Bulletin 17B mean <br />- -* -* ....* <br />M' , mean of frequency curve passing through Q 0.50. Q 0.10, and Q 0.01 <br />ill, historically-weighted rank of the moth largest observed peak <br />m, rank of the moth largest observed peak <br />MSE, mean-square error (standard error of estimate squared) <br />MSEG, mean-square error of generalized skew coeffi(:ient <br />MSEG, mean-square error of station skew coefficient i <br />N, effective number of peaks above flood base, Qo <br />NBB, number of peaks below the flood base, includin~ any zeros and low outliers <br />NHO ,number of high outliers <br />NHP' number of historic peaks <br />N s ' number of systematic peaks <br />Nx' number of peaks between Qo and QH <br /> <br />PEAKFQ <br /> <br />v <br /> <br />DRAFT. 1/30/98 <br />