Distances, , of the BS (black squares, solid line), AP (blue diamonds, dashed line), TS (purple circles, dotted line), and the MD in its most distended (MD_max, orange triangles, dash-dotted line) and compressed (MD_min, green pyramids, dash-dot-dotted line) positions along the central axis of the 2D models (Table 3) against the respective inflow speed, u_ISM. Both axes are scaled logarithmically.