Table 1. Relevant data for participating divers. * = Nitrox used but computer set on air .

Parameter	Diver 1	Diver 2	Diver 3	Diver 4	Diver 5	Diver 6
Age (years)	56	54	61	45	63	66
Sex	M	F	F	F	F	M
Body Mass Index (kg·m2)	22.9	20.4	22.7	19.9	26	22.9
Dive experience (years)	35	35	40	29	35	40
Dive experience (dives)	1,500	800	2,190	2,000	1,100	3,800
Dive computer used	Suunto D4i	Oceanic Geo	Suunto Zoop	Suunto D6	Mares Puck	Suunto Zoop
Gas used	Air	Nitrox*	Air	Air	Air	Air