You're talking out your ass and unclear on the basics. Obviously we're using standard gas mixes based on the depth profile, not compressed air. For the working

You're talking out your ass and unclear on the basics. Obviously we're using standard gas mixes based on the depth profile, not compressed air. For the working portion of the dive we generally limit PPO2 to 1.2 atm but will go as high as 1.6 for portions of the deco. If you'd like to understand diving physiology instead of just repeating what you Googled then Bennett and Elliott is a good place to start. https://www.us.elsevierhealth.com/bennett-and-elliotts-physiology-and-medicine-of-diving-9780702025716.html https://www.us.elsevierhealth.com/bennett-and-elliotts-physi...