graph TB 3ea066c953d0eaa6["Orthometric height"] 57933fce80bf4ad8["GNSS measurements (WGS84 ellipsoidal height)"] b0b64d8c6675e55e["Geoid height"] 57933fce80bf4ad8 --> b0b64d8c6675e55e b0b64d8c6675e55e --> 3ea066c953d0eaa6 %% Node links click 3ea066c953d0eaa6 href "/knowledge/Orthometric-height" "Orthometric height" click 57933fce80bf4ad8 href "/knowledge/Ellipsoidal-height" "Ellipsoidal height" click b0b64d8c6675e55e href "/knowledge/Geoid" "Geoid"