Working on a thing to totally revolutionise climbing (
) but need some info - so wanted to know if people could chip in with max sport grade per age category for 10-15 / 15-20 / 20-25 / 25-30 / 30-35 / 40-45 / 45-50 / 55-60 / 60-65 / 65-70 / 70-75 / 75+
i.e. Adam Ondra 9b+ aged 21, Ben Moon 9a aged 50, Lee Sheftel 8b 67 etc etc
Not sure if this is the right place for thsi or if there already a site that does this by age but any help appreciated...