Quality of Competition / Teammates
Who a player skates against and with, weighted by ice time and by that season's RAPM. It describes context only. See the note below.
QoC (Quality of Competition) shows how strong a player's 5v5 opponents were. QoT (Quality of Teammates) shows how strong his linemates were. Both weigh ice time and that season's RAPM. Each is a percentile within the season. 100 is the toughest foes or best teammates. 50 is the middle.