model data capabilites comparison chart link?

I;m pretty sure I came across a chart linked at this forum that had the xPAP models and what data they recorded. I cant find it.
any links appreciated..

I am particularly interested in exent duration, which my Intellipap does not seem to have. 1 AHI could be for 5 minutes for all I know. (that would affect the tidal volume somewhat though I should think). could tidal volume or other Sleepyhead reporting stats be of use for this purpose?

my apnea study had the average and max durations but that wasnt on a xpap machine , do any machines record this data?
my only alternative is to use the oximeter which should be correlative (and correlative should be a word if it isnt).



cheers..