Also changes as how you score changes, 5,8,10 or 5,8,10,11 or 5,8,10,12 and where is the 11/12 ring, center or offset.
Heck even Vegas face has 2 "10" rings, which one you using?
All fun!
That dime size inner ring is the X ring, you can keep track of X's and use them for tie breakers. If you are keeping your arrows in either one of the inner rings for the entire round then you are shooting very well indeed.