That was a long time ago but I'm thinking it was 0.75 - 1.0 percent. Oxygen was allowed to go surprisingly low, like 16-17%. We could smoke when I was in and people used to complain they couldn't keep their zippos going or that their smokes would go out but I doubt the O2 was ever that low.Well now I understand your level in this discussion. You think I have not studied the IPCC report? Well, there have been a number of the reports and yes, I have studied some of them. It shocked me you dismiss Dr. Moore and actually libelled him. I could indeed have included Spencer as well as many many others. Do you happen to know the CO2 level inside nuclear submarines? I think it is not secret.
Patrick Moore is not a climate scientist and he has spent most of his professional career doing PR work for mining concerns. Why do you bring him up in this context?
And I would still like to hear why you dismiss the IPCC and the hundreds of scientists' studies on whom they base their work.