Maybe it's showing your ascent rate in meters per minute.
Or maybe stuck in the nether world somewhere in between.
I thought an ascent rate indicator in actual feet per minute would be a pretty cool tool.
I didn't pay any attention to it till I decided to compare all the data to my Vyper, all the other data was spot on between the two.
I did try a question to Scubapro through their website as well. Will post that reply if I get one.