Inconsistent use of the word average

On charges.php the column labels is inconsistent with how it uses the word average or its abbreviation.

In the AC Charging Totals section, two column headers are "Avg Efficiency" and "Avg. Time" (note the period in Avg. Time).

In the Supercharging Totals section one column header is "Average Time" with the word being written out in full.

It would be good to standardize the use of the word average.