Start value in Elevation legend-table      Search Adr:
Distance between contourline-levels[m] [ you can either use the slider or make a manual input ].
+ m
Open gpx-file:

Height:  m,  Accuracy:
Distance:  m,  Time: ,   Avg Velocity:  km/t,  Ascend:  m,  Descend:  m 

v   v_eff  

Elevation[m]