Surface and shallow subsurface properties hypothesis for Pluto’s CRs. S CR, NW CR, and NE CR correspond to the southernmost, northwesternmost, and northeasternmost example CRs, respectively, in Figures 1 and 4. SP1 corresponds to a Sputnik Planitia locality between the three example CRs. The 95% statistical confidence intervals are generally smaller than the filled circles, and the two P_LORRI (19° solar phase angle) measurements of each locality are indistinguishable. Hapke+haze photometric functions are shown using best-fit parameters and average incidence and azimuth angles (both angles are approximately constant; Table 1). Best-fit parameters for each locality, however, were determined using angles specific to each measurement, and residuals are generally smaller than they appear. Different surface and shallow subsurface parameter values satisfactorily fit differences between example CRs on Pluto and their surroundings.