@lorna
Ok, it looks quite useful. But I don't know exactly how to make sense of the data to compare the performance of the different filters.
Specifically, when I select a filter, a button appears called "Analyze filter". If I click on that a new graph appears and there is a tab called "Compare" below the graph. Apparently this is where data on each filter can be tabulated for comparison. I've figured out how to tabulate the data for the various filters, but I don't know what the data means. Is there some instructions somewhere explaining what "CCT", "Cyanopic", "Melanopic" etc. mean. And which data is most relevant for comparing the filter performance?
Ultimately, I want to get sleep glasses and a screen filter for my iPhone which I will use in the evening in my apartment. So I want to compare the performance of the filters for these applications.