ianr33
Contributor
See, this is what I'm talking about. By working, do you mean you use a ppo2 of 1.3 if you're working as an instructor? Or do you mean if you are breathing heavy, i.e. exerting effort?
"Working" in this context generally means "swimming", even slow swimming.
During deco you are generally "resting" i.e. just hovering in place or hanging on a line (Or in a cave taking a nap on the bottom )