Avg Miles per Fuel Up question

[Gadifer]

The question pertains to the Average Miles per Fuel UP calculation. It shows mine as being 365 miles because it divides my total miles tracked (2191) by the total logs (6). But I think it should throw out the first log since that's the starting point and not a log unto itself. I actually drove 453 miles on that first logged tank, and then 438, 444, 430, and now 426 miles. It should be 2191 miles divided by five and the Average Miles per Fuel Up should be 438.2 shouldn't it? Is my logic incorrect? Thanks for any enlightenment.

[Draigflag]

The first log is bogus, added fuel but no miles. A fuel up is miles driven and fuel used, not just one or the other, this will screw your data up. I suggest deleting it.