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rp6conrad said..
>>>GPSspeedreader is a amazing piece of software, very impressive !!
In my opinion it's the best, especially for GPSTC use.
The hour algorithm is the way we want it, the number of NMs traveled in over an hour period.
So it doesn't matter how long you sail or what your starting speed is, you always get an accurate result.
There never should be a "0" hour.
And the default filters eliminate most invalid results.