Oh that makes sense now, really a nice hack, I’ll keep it in mind for when mod2 is round the door — for now all I got is airI often — for planning — set a different gas with 1% more/less oxygen 1 metre above the bottom gas for zero minutes. This forces MultiDeco to switch from bottom gas to the new one. It then lists the gas volumes meaning you’ve got the total bottom gas separated from the ascent gas, vital for bailout planning