Originally Posted by
Moe Zhoost
Well, it turns out that it's not noise at all. I reviewed my rowing track to check where the elevation changes were occurring and discovered that the highest elevations were close to shore. Apparently the elevation data are referenced to the lake bottom, not the actual surface.
It's not noise because the device isn't measuring your elevation. It's using a database (DEM), which, as I said, has issues and not ideal for elevation gain.
The issue might have been more apparent if the complete data (horizontal location
and elevation) was provided.