GURPS Space question

[awesomenessofme1]

Originally Posted by David Johnston2

But it isn't. You're right, I forgot that if it didn't have Low Oxygen then it would be Habitability 2. So because it has Low Oxygen...it's still Habitability 2. It's not objectively better because with or without Low Oxygen the amount of nitrogen in your lungs is still lethal.

Atmospheric nitrogen has no listed effects in GURPS. Even the description for Very Dense only talks in the context of oxygen.