These figures show, site by site, the results of this project (top), the predicted results from the Schwiderski model [Ray and Schrama, 1997] (middle), and the estimate - model differences (bottom). In all figures, the length of the arrow is proportional to the amplitude of the signal. The length has been scaled to one-half the true value for better presentation on figures of this size. The orientation of the arrow represents the phase of the signal, e.g. an arrow pointing straight up indicates a phase of 0 degrees; an arrow pointing to the right indicates a phase of 90 degrees (see the figure below).