Assertion: nitrox diving | /r/CapableOf | tweak this mixture
Facets:
value: to maximize bottom time
type: PURPOSE
Source sentences:
text: Nitrox diving, on the other hand, tweaks this mixture to maximize bottom time (i.e., the diver's time spent underwater) and minimize surface intervals (i.e., the time the diver must stay on the surface before diving back in).