The question is a bit weird so i'll open it up. So i have a table of return periods for different amounts of rain. The table has been made using GEV distribution on known data and then the mean and confidence intervals are calculated for different return periods.
I need to recreate this curve closely as possible in another program that does not have GEV-distribution so i will have to use lognormal in this case. How can i get the parameters for a lognormal distribution that would be close to the GEV curve. I also don't have the original datapoints, just the data from the curve.