Mdemon, those profiles are achievable but depend on work rate, as Dr Mike has said, deco is not hardwork (normally), and is conducted shallow for the longest stops (obviously) so the scrubber can be pushed.

But do not take my word for it nor believe what I am saying, just because it works for me does not mean in anyway that it will work for you and as an Instructor I strongly advise you against exceeding the manufacturers limits for the scrubber duration. Ignore this advice at your own peril.

Cheers,

Dave Cooper.