It seems it depends on how much air you need to get to the surface and whether you plan to take a detour rather than going straight up. And do you plan to hang around for a few minutes making up your mind.
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No it is much more complicated than that... You need to consider options......LOLIt seems it depends on how much air you need to get to the surface and whether you plan to take a detour rather than going straight up. And do you plan to hang around for a few minutes making up your mind.