I have to confess that I am still a bit confused about what happened. It sounded to me in the other posts that you were trapped in a down current and had to struggle to ascend. As I read this, it took you 30 seconds to go from 150 feet to 10 feet, an ascent rate of 280 feet per minute. Please correct any misunderstanding in that.
EDIT: In response to the next post below, I would say that my reading skills have deteriorated in my dotage. Carry on.
I believe that would be 20 ft per minute?
They made it "10 ft". Not TO 10 ft.
OK, so I looked at the video again, and it looks to me as if the first attempts to start an ascent begin at about 6 minutes, and the surface is reached at about 7:20. (Just rounding off.) So going from 150 feet to the surface took two minutes, or an ascent rate of about 75 feet per minute. Is that accurate?