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CNS% Central Nervous System toxicity limit fraction. See note
“Oxygen Limit Fraction”.
Compartment See “Tissue group”.
DAN Divers Alert Network.
DCI Abbreviation for decompression illness.
Decompression Time spent at a decompression stop or range before
surfacing, to allow absorbed nitrogen to escape naturally
from tissues.
Decompression range On a decompression stop dive the depth range, between the
fl oor and ceiling, within which a diver must stop for some
time before surfacing.
Decompression illness
Any of a variety of maladies resulting either directly
or indirectly from the formation of nitrogen bubbles in
tissues or body fl uids, as a result of inadequately controlled
decompression. Commonly called “bends” or “DCI”.
Dive series 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.
