Number of neighbors as a function of projected distance. The projected distance is calculated with respect to the passive galaxy hosted by the z343 over-density (cyan line), to the passive galaxy hosted by the z355 over-density (black line), and to the passive galaxy, from the literature, located in the field around the z323 over-density (orange line) in both the left and right panels. The right panel also shows the number of neighbor as a function of projected distance from the passive galaxies, from the literature, identified in the subgroups of the z355 over-density (yellow and purple dashed lines). (a) Overdensties. (b) Group Differentiation.