Box-and-whisker comparison of d/D for small fresh craters (gray circles) formed within large PSRs and non-PSR (illuminated) terrains (denoted as NPSR) at the lunar north and south poles. Boxes represent the interquartile range, whiskers denote the data spread, horizontal lines indicate medians, and white circles represent mean values. A dashed vertical line separates north and south polar populations. The crater data used for the statistics shown in this figure are available as data behind the figure.

(The data used to create this figure are available in the online article.)

(The data used to create this figure are available.)