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PDIS (Profile Dependent Intermediate Stop)
NOTE:
Subgear XP-3G issues no warnings relating to a missed PDI stop.
When diving with MB levels, PDIS follows the same rules as described above. MB levels,
however, introduce stops earlier and deeper than the L0 base algorithm. As such, the PDIS
display may be delayed and for certain dives it may not be displayed at all. This for instance
would be the case for a shallow dive with air (21% oxygen) and MB level L5.