Oceanic Personal Dive Computer Veo 100Nx - Manual (Page 48)

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The Time to Fly counter is provided to assist you with deciding
when enough surface time has elapsed to fly (or travel to higher
elevations).
 After a Surface Interval of 12 hours, you may choose to fly
(or travel to higher elevations), provided that your dive
profile(s) did not enter decompression.
 If your diving involved decompression or a repetitive multi
day profile, it is strongly recommended that you wait a full
24 hours after your last dive to add a greater degree of
protection.
Pre Dive Planning Sequence (PDPS)
After a dive, the PDPS provides 'adjusted' No Decompression
Limits (Fig. 54) based on residual nitrogen calculated to be
remaining from that dive and previous dives in the same series.
Fig. 54 - ADJUSTED NDLs