Are there any dive computers currently on the market that log psi profile (e.g. as a function of time, similar to depth as a function of time in a depth profile?). I currently own a Suunto Cobra that logs psi at the start of the dive and end of the dive. It displays current psi during the dive, but does not log this and cannot be retrieved later - even though the Suunto dive log software "Profile Graph" will show psi changing, it is just an extrapolation from the logged starting and ending psi.