if you use a SD-Card in your ST10 then you can find three different logfiles.
In two of them, you will find gps coordinates.
Look in the RemoteGPS-Folder to use the easier file.
You can open the file with open office for example as spreadsheet.
Then you have on the left side the date, following with the gps data
Take a look at this. Maybe it'll help. You can also overlay the telemetry onto a Google Earth map, or overlay the data on the video through Dashware. Idk if this help, hope so. They're so much to learn with these birds. Deciphering telemetry files