On Wed, Oct 29, 2014 at 5:00 PM, Artur Wroblewski wrobell@pld-linux.org wrote:
The 15 tissue compartments half-times are documented in the Suunto manual.
Hmm. Interesting. I hadn't actually noticed that, but right you are. Not that they are exhaustively documented, but the Nitrogen half-times for the compartments are indeed there (with "halftimes are divided by a constant factor to obtain helium halftimes")
IMHO, there is much more value in such information than in Subsurface's recalculation of inert gas pressure in tissue compartment recalculation with Buhlmann.
I'm not sure that follows, though.. The ones we calculate are much better documented, and at least as well-tested as the one Suunto does, and you can actually see how changing the values and settings changes things, and how it affects the loading during the dive - while I can only download the saturation before/after the dive, with no logging of it during..
That said, it would perhaps be interesting to see if we can match the before/after values some way. But there's that magic M-value and probably other hidden variables that depend on dynamic issues like ascent speed, so it likely isn't nearly as simple as looking at the profile and the beginning/ending compartment values and trying to figure out the hidden constants.
There's some more docs from Suunto at
http://ns.suunto.com/pdf/Suunto_RGBM.pdf
if some mathematically inclined person cares and is interested. And I can give people profiles and tissue loading data from my 21 dives if somebody really wants to see if they can match the data at least superficially.
Linus
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