Net thickness change at the equator including both Modifications I and II for all the shape cases. Each panel shows a different shape. Panel (a) shows the case when a₀ = 413 m, b₀ = 395.5 m, and c₀ = 298 m. Panel (b) illustrates the case when a₀ = 393 m, b₀ = 375.5 m, and c₀ = 318 m. Panel (c) shows the case when a₀ = 433 m, b₀ = 415.5 m, and c₀ = 318 m. Finally, Panel (d) illustrates the case when a₀ = 413 m, b₀ = 395.5 m, and c₀ = 278 m. Panel (a) is identical to Figure 5.