These scores seem a bit fishy to me. Way too consistent if you ask me. Excluding that lone 3 in the first set, all his scores are conveniently between 6 and 12. Statistically speaking, it's very improbable to have such a low standard deviation at his skill level. You would expect a couple of 1s and 2s in the mix. Likewise, if he can string a couple of 10s and 12s, you'd think he would be able to reach a score of 16 or 18 a handful of times. My verdict...either he made these scores up, or he didn't record the several 0s, 1s, and 2s he certainly should have accumulated.
Sorry, I shouldn't criticize since I haven't posted my scores...yet.