The median polarimetric behavior for (a) CPR, (b) SC, and (c) OC and the three m-χ components (d) Red, (e) Green, and (f) Blue, subdivided by incidence angle bin, as a function of rock abundance (RA), on a log-scaled axis, as measured over the lunar maria. As depicted in the legend, color represents the combined incidence angle and TiO₂ bin. The respective solid line and corresponding dashed lines are the median and 95% confidence envelope measured within that bin.