mipapo understood. The support is excellent and I see the fields at the bottom! The insight here about Native Field Num is also really valuable.
I was just remarking on how I can’t tell which data field was used for elevation, for example.
My gym has a treadmill that broadcasts FTMS, unsupported by Garmin platforms but enabled via CIQ. The data from the treadmill app isn’t consistent with the treadmills the author tested with and wrote for, so the numbers are interpreted wrong; 3000% average incline vs 3%. Units being written wrong, etc. But not for all fields.