SUUNTO OCTOPUS II - Manual (Page 33)

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The ascent time (ASC TIME) is the minimum amount of minutes needed to reach the surface in a decompression dive. It
includes: The time needed to ascend to the ceiling at an ascent rate of 10 m/min [33 ft/min]
plus
The time needed at the ceiling. The ceiling is the shallowest depth to which you should ascend
plus
The time needed to reach the surface after the ceiling has been removed.
NOTE: Ascent time is not displayed in the Octopus II dive computer (see Figure 3.16).
WARNING!
YOUR ACTUAL ASCENT TIME MAY BE LONGER THAN DISPLAYED ON THE DIVE COMPUTER.
The ascent time will increase if you:
• remain at depth
• ascend slower than 10 m/min [33 ft/min] or
• make your decompression stop deeper than at the ceiling.
These factors will also increase the amount of air required to reach the surface.
WARNING!
NEVER ASCEND ABOVE THE CEILING! You must not ascend above the ceiling. In order to avoid doing so by accident,
you should stay slightly below the ceiling. The ceiling zone is the shallowest depth range to which you should ascend when
in decompression.