So, first of all I have a random signal, then I find out that it is nothing but sum of regular waves. Then if I can find it out, I can find out what omega and what a are associated. Then, I plot that graph; it turns out that the graph represents, , you know, Rayleigh distribution. So, I make an assumption, look I will consider this graph to be Rayleigh distribution. Now, I have to find out what is my average wave height or significant wave height. All I will do, take the area under the graph, use this formula.