For the Techy experts

[jillybean]

I have an Apap, s8 auto spirit thingy. Well being nosy I pressed the buttons and now can see how long each night had it on for all well and good ... but it also shows the pressure which varies a lot!!! Its been as low as 11.7 and as high as 19.4 and everywhere inbetween. Is that the preesure that it was stopped on or an average throughout the night?? Just wondered. Thanks