what is relative confidence error how to calculate confidence rpgp relative confidence error between two unfixed points what is relative confidence error in surveying relative confidence error when is ls error considered a confidence error is relative confidence error accurate what is relative confidence? what is the 95% accuracy of relative confidence what is relative confidence what is relative confidence error what is the relative confidence error how to calculate relative confidence what is relative confidence what is relative confidence for land survey relative confidence definition surveying what is relative confidence error what is relative error in gps how to use relative confidence relative confidence error definition