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Predominant Wave Period - Seconds 



14 Distribution of Significant Wave Periods and Lengths for Period, January, 

 1949, to June, 1955, Based on 16,060 Observations 



Where fj js the fraction of all observed sea states distribution corresponding to each value of Ej 



defined by Ej. which defines an observed significant wave height 



The summation also could be carried out by and then summing over-all values of observed 



computation of the individual probability density significant wave heights. Both processes were 



21 



