In an effort to maintain quality info here on FR, would you mind saying which info is marginal and/or bad?
There are people out there...that run in the high 80's...That is their norm.
I could try to explain the OxyHemoglobin Disassociation Curve to you... but it won't make sense to you.
I'm RRT...I do not get worried until someone's Pulse Ox reading is under 80....That's when the curve falls off precipitously.
Hopefully I was informative....and that is all you needed.