Peter has noticed a minor problem with the way hours are calculated by current firmware. (not sure about Real Speed)
They can't start the calculation at 0kts, most of the time this won't be a problem, especially if there's no minimum speed set anywhere, (GPS unit or evaluating software).

Here's an example of where it can be a problem.

This hour starts when there is a speed recorded and gives a result of 9.588, including the big gap near the beginning and ignoring the smaller gap at the end.

And here's where the hour should be. It starts at 0 and includes the smaller gap at the end



This gives a result of 10.284.

Unfortunately GPSAR seems to have a min speed of 5kts permanently set.
GPSResults has a 5kt min speed by default in the filter settings. For the best hr and distance results, change this to 0.
I'm fairly sure KA72 has no min speed filter, but still needs to start the calculation above 0kts.

For more detail, here's Peter's blog
boardsurfr.blogspot.com/2019/04/hour-analysis-for-gpstc.html