Why am I getting different data readings (elevation, distance, or speed) from different data sites?
When you upload your rides from your GPS to Lezyne's GPS Root, Strava, or any other data processing sites, you will see corrected values for elevation, speed, and distance which use that particular site's software.
For example, Strava's correction software for elevation is based off of GPS data that they have received from a multitude of riders using their website. The correction software we use is based off of NASA's 3D model of the Earth. Because they use different data processing software than we do, the data will seem slightly different.