†Technique number 1 is the most rigorous
the bench mark heights will retain their original relative accuracy.† These heights will be useful to all users. In addition, NGS will adjust and publish
the results if the data
are submitted to NGS in computer-readable form.† Technique number 2 may
meet many usersí requirements, but depending upon the accuracy requirements
and the complexity of the usersís leveling network, may prove to NGS to process.† Technique number 3 should be the easiest method to implement, but in
general is only sufficiently
accurate enough to meet mapping requirements.