SUUNTO Vyper - Manual (Page 65)

Figure 6.8. Decompression dive, above the floor. The upward pointing arrow has
disappeared and the ASC TIME label has stopped blinking, which means that you are
in the decompression range.
Decompression will now begin, but is very slow. Therefore, you should continue your
ascent.
Display at the ceiling zone
When you reach the ceiling zone, the display will show you two arrows pointing at
each other (the “hour glass” icon). Below is an example of a decompression dive at
the ceiling zone.
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