I have a question regarding elevation. Yesterday was a dry day and I was mountain biking with two friends both wearing Apple Watches. They recorded 230m and 200m elevation during our 22km ride (their distance was slightly different than mine, but I have a wheel sensor so I take mine as more accurate) however my elevation was much different at 420m. Using Strava to correct elevation to their base map it gives me 295m of elevation. When I start up my computer it always gives me the message that my elevation is calibrated to location. Why the large disparities in elevation?