I've just recently configured my Perdix to display GF99 and SurGF in OC Tec. These are no-deco dives using the default 85/85 gradient factors. Typically when I hit 20', SurGF was around 60% and the display was showing "Clear" where it would if I was in OC Rec and did a 3-minute safety stop.
So the question: Under these circumstances, is a 3-minute pause really warranted at 20'?
So the question: Under these circumstances, is a 3-minute pause really warranted at 20'?