Can someone help me understand how sample size works on individual stats. Like, I set it to 15 for VPIP and PFR and those show up after 15 hands, but other stats aren't showing up e.g. set AF to 50, people with 100 hands still don't have AF showing.

So I thought ok it must mean sample size of chances to do the certain action i.e. the number in brackets on the HUD popup. But then even setting AF to 15 still doesn't show up for some people with 30+ samples for AF.

Does sample size work off of hands played or opportunities they've had for that specific stat? I'm confused. Thanks.