Pages 85-94
In the first report authors presented an approximate calculation method of long-term distribution of random variables on the premise that their standard deviations are given. It was clarified that the expected values of long-term distribution were almost determined by the maximum values of the standard deviations and the corresponding average wave periods. In this report authors bring these two values into focus and their approximate calculation method will be presented. If the response functions are given, the maximum values of the standard deviations and the corresponding average wave periods can easily be obtained by this method.