Experience says a carto of 1 ml and 24 mg is only about equal in nicotine intake to less then half a pack. That's why folks routinely vape 3 ml a day, on average. I can't quite vape that much, probably only around 2 ml. So, compared to my 2PAD habit of analogs my vaping is taking less then half of what I was getting by smoking.
Most interesting information. Thanks for that.