Azimuthally averaged profiles of intensity (solid), flow velocity (long-dashed), divergence (dashed), and radial velocity (dash-dotted) for all pores (same as Fig. 11 using a similar layout to the one in Fig. 8). Two dashed lines represent our choice of intensity threshold (0.85 I₀) and the photometric radius of pores (1.0 I₀). The solid line in the center is provided as a visual guide for the zero-crossing of divergence and radial velocity. The short colored vertical lines mark the extreme values and zero-crossings. These markers are replicated on the abscissa to assist in finding the corresponding normalized radii.