placement in space: where are the off-world homeworlds?

[Mamorien]

Something I've been trying to remember to ask for a while: On p.IST32, Nea!son^ma is said to have "a lower partial pressure of oxygen than Terran normal". Is it low enough to qualify as a low-oxygen marginal atmosphere as per p.80 of Fourth Edition GURPS Space? If so, I think we should give the Kyz (or at least Touchstone) the Pressure-Tolerant Lungs perk from p.211 of GURPS Bio-Tech to reflect that Earth's atmosphere doesn't seem to affect her in the ways outlined in the "High Oxygen" section of p.S80.