And, I'm not going to say how many green kits I used. I did this just to get data and because I was interested by it, not to improve my player (or show off). And I don't know how many (but might be able to work it out) .............

...................IF I remember or relearn how to do stuff in spreadsheets I can look at 'gain per 1 or 5% condition' which might be useful for considering the time or cost involved.