In this dialog window, you have to set some of the network adjustment parameters.
A priori unit error m0, which will be used for the adjustment. If the distances are not measured, enter the unit mean direction error here; if the distances are measured, enter the unit mean distance error. After the adjustment is tested, the ratio of this a priori unit mean and the a posteriori unit mean errors will be determined based on the adjustment. This ratio should converge to 1.