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<br />T <br />X <br />X <br /> <br />Xn <br /> <br />Standard error of sample skew coefficient, which for <br /> <br />samples from a normal distribution can be estimated as: <br />/ 6N (N-l) <br />SEG =~(N-2) (N+l) (N+3) <br /> <br />Recurrence interval in years <br /> <br />Logarithm of peak flow <br /> <br />Mean logarithm of peak flows <br /> <br />Logarithm of lowest item in set of N items <br /> <br />SEG <br /> <br />2-7 <br />