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Term
Decompression range
Dive series
Dive time
Floor
He%
MOD
90
Explanation
absorbed nitrogen to escape naturally
from tissues.
On a decompression stop dive, the
depth range between the floor and
the ceiling within which a diver must
stop for some time during ascent.
A group of repetitive dives between
which the dive computer indicates
some nitrogen loading is present.
When nitrogen loading reaches zero
the dive computer deactivates.
Elapsed time between leaving the
surface to descend, and returning to
the surface at the end of a dive.
The deepest depth during a
decompression stop dive at which
decompression takes place.
Helium percentage or helium fraction
in the breathing gas.
Maximum operating depth of a
breathing gas is the depth at which
the partial pressure of oxygen (pO 2 ) of
the gas mix exceeds a safe limit.
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