V-bulletin calculates "posts per day" based on post-count dev into days since registration. Sure, it's not filtered by "days user didn't log in" but still represents the posts per day. Just not the number of posts per day the user was logg-in.
Missing a fuel up shouldn't be relevant. Use the all-time mileage tracked during, divided by number of days in the sample period selected: Days, weeks, months, year etc that all the mini stat fields currently have.
You hit it when you mentioned that the User is responsible for accurate data-point entry, if he/she wishes to have accurate output.
|