into polar components (magnitude and direction) and residuals were calculated again. ABM and STDEV of the polar residuals quantify the obtained accuracy. This approach is analogous to the procedure described in Section 4.3.1. In this case the extent dependency of the mean error is realized by the size of the correlation window. To obtain accuracy for 'annual creep rates", the magnitude has to be divided through the number of years between the measurements.
Panadda Suebpimpawong