Why is my Instinct solar's altimeter so accurate when I'm at the coast meanwhile there would be a (+/-) 20m error when I'm at my residence which is 2km away from the
After calibrating the barometer the trending arrow is pointing down 15min after every altimeter calibration - fēnix 5 Plus series - Wearables - Garmin Forums
Barometric altimeter. Everything you need to know about altitude on GPS
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