The air diver enters the water at 5:05 p.m. and dives to 114 feet for six minutes. The nitrox/computer diver enters the water at 2:53 p.m. and dives to 114 feet for 32 minutes. Surface Interval ...

If you scuba dive, you may already have heard of Nitrox. To breath underwater, most divers use a normal atmospheric air mixture (21% oxygen, 78% nitrogen, 1% trace gases) under pressure. One the ...