D’Oh! I knew I was tired when I wrote that; it’s 40% or 2 in 5. Fixed, thanks!
Thanks for the link; I hadn’t realised that was still available on the oldforums archive, and the other version I have is missing most of the images. Unfortunately, the link appears to be missing the table of intervals? It is for me, anyway. I need some time to go through a number of things before filling in more content, but it’s New Year’s Eve… I’m not trying to present a “stopping rule” as such, so I’ve made some edits to try and clarify that. It’s more the point at which I start to feel comfortable sharing my data with others so it can be pooled.
Anyway, time to go!