Full Range flight test

Afternoon all,

Today was a great day to get some distance flying in with the Mavic Mini to establish VLOS ranges and also a height test. I managed to get up to around 100 high and 300m before losing VLOS.

A couple of quick questions about the properties of the images, why is it the height properties of the lower image was about 15m it says altitude 82.998ft but the higher image which was at 100m it says 7.801ft.

Any ideas?