Doing a study like njoy completed is just opinion and not fact.
You will need to take into account other E-cigs that don't have sensors. Like the 510, and some of the USB passes.
Also the amount of nicotine even with the same unit is absorbed differently with each subject. For example, some will do a primer puff and still absorb some through the mucosa membranes of the mouth. Some might hold the vaper longer then others. There are too many variables to nail down on this subject.
You will need to take into account other E-cigs that don't have sensors. Like the 510, and some of the USB passes.
Also the amount of nicotine even with the same unit is absorbed differently with each subject. For example, some will do a primer puff and still absorb some through the mucosa membranes of the mouth. Some might hold the vaper longer then others. There are too many variables to nail down on this subject.