Normalized Grade Adjusted Pace

This is based on the Grade Adjusted Pace data field, but normalized since the start of the current activity. Grade Adjusted Pace is your equivalent running pace at the same effort on flat ground at sea level. It works best on devices with barometric altimeters. Devices with GPS-based altitude may show erratic results.

v2.0: - Improved grade adjustment formula - Added some ways to correct for glitches in speed and altitude data