Fig. 4

Comparison of integrated cross sections for the models SH18CE (Takeuchi, 2007), SAW24B16 (Mégnin and Romanowicz, 2000), SB4L18 (Masters et al., 2000), S20RTS (Ritsema et al., 1999), and S362D1 (Gu et al., 2001). The average of these five sections (labeled as AVERAGE) is also plotted. The distance and direction from the center of the figure show the radius and the longitude of the central point (or the bottoming point) of each integrated path, respectively. Downward and upward directions show 0°E and 180°E, respectively, and rightward and leftward directions show 90°E and 90°W, respectively.