Frequency: average instead of sum

[FunkyMonx]

At the lower end of the screen of each habit I can see a monthly overview of all the totals. In my Dutch version this is called 'Frequency'.
It seems to add up all the values. But it is fairly skewed. For example if a month has more Fridays than Mondays, the sum of the Friday seems higher. So you're thinking: Friday is a good day for this habit. But if you look more closely this is not the case. The Friday simply has more values to add up.
So my improvement would be: show the average value instead of the sum because I want to spot at once which day has been the best for this particular habit.
I do not want to see which day was the most prevalent.