Average aggregator works wrong when there are missing values for the period

[KonishchevDmitry]

Hi! I've noticed that average aggregator works wrong when there are missing values for the period.

Here I got an aggregated chart (generated by https://thingspeak.com/channels/134669/charts/3?title=CO2%20concentration&xaxis=&yaxis=&width=auto&days=1&average=10):

As you can see there is a gap at 22:00:00, but if we look on non-aggregated chart (generated by https://thingspeak.com/channels/134669/charts/3?title=CO2%20concentration&xaxis=&yaxis=&width=auto&start=2016-09-11%2021:00:00&end=2016-09-11%2023:00:00&offset=3):

we'll see that the gap was an aggregation error due to missing data.