Quote: (Originally Posted by UWSojourner)
Richard Vann's article refers to the PO2 limits in terms of bar. Other published tables refer to ATA. What is the standard? Bar or ATA when refering to 45min at 1.6 (for example)?
Bar and ATA are almost the same: 1 ATA is 1.013 bar (the mean pressure at sea level).
The papers on which the CNS limits are determined, are in ATA, so we use ATA as the reference. The reason ATA is used is because deco algorithms are generally in ATA, because everything is reference to the surface pressure.
Plotted below is the effect of adding the CNS margins being proposed here, in ATA.
Cheers,
Alex