Local surface density of cores as a function of their core mass, for the MM2, MM10, and Outskirts subregions (panel a) and for the MM3, MM12, and MM51 subregions (panel b). Horizontal segments indicate the local surface densities of the five most massive cores, (Σ_{6 cores})_massive, in the subregion. Left arrows and vertical dashed segments locate the 90% completeness level of each core catalog (see Table 2). The five most massive cores of MM2, MM3, and MM10 have higher core local surface densities of cores than the median densities measured for their entire core sample (see Table 3).