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I gave Will a simple method to make the Z program generate the right stops,
but he then made it recalculate ( you can't see it doing that when you run
the program) and add "safety factors". Otherwise it would come out right.
For GUE's program, you need to ask Eric Baker what he is doing there.

>  -----Original Message-----
> From: 	James Dibbs [mailto:James.Dibbs@op*.co*.au*] 
> Sent:	Monday, January 07, 2002 7:58 PM
> To:	'techdiver list'
> Cc:	'andrew.ross@ma*.co*'
> Subject:	Deco planner algorithms
> 
> I have a question about algorithms used in deco programs.
> 
> Given that the Oxygen window theory is fairly widely accepted, why do none
> of the deco calculators (including the one used by GUE?) take this into
> account when creating profiles? (tell me if I'm wrong), ie add a long stop
> at 21m (or whatever depth is 1.6atm ppO2) and trim the shallow stops.
> 
> All the profiles I have created using Z-Plan, V-Planner, Gap, etc using
> 50% for deco seem to only have a 1 or 2min max stop at 21m then conduct
> most of the deco up in the 6m and 3m stops.
>  
> The norm I have seen locally is to fudge the resulting profile based on
> experience and rules of thumb after it has been calculated (ie Add a long
> soak at 21m then trim off the shallow stops or reduce the conservatism or
> put in a 21m waypoint then calculate the ascent from there) rather than
> get the tool to build it based on the correct inputs.
> 
> Thanks in advance
> 
> James Dibbs
> Sydney Australia

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