Assertion: diver | /r/HasProperty | allowed 150 minutes of bottom time
Facets:
value: at a ppo2 of 1.4
type: OTHER
Source sentences:
text: Most recreational dive schedules consist of no more than two dives in a half-day period of no more than one hour each, and at a PPO2 of 1.4, divers are allowed 150 minutes of bottom time--even if it is all completed on a single dive.