Percentage of time practicing? 20% practice time for tap in's? That's not what I am saying. There is a chart I found a few years back. You can see it in this blog post I did here: http://golfing-guru.com/?p=33.
Essentially it profiled golfers at various skill levels and outlined what their relative strengths/deficiencies are.
For example: An average score of 85 typically meant a golfer will have hit 5 greens in regulation, hit 46% of fairways,...