Number density map of the population of our catalog across the 2° × 2° region investigated in this study (see text). Spatial coordinates (RA and Dec) are expressed in degrees (°) in this and all subsequent diagrams. Object densities are mapped according to a “rainbow” color scale, where purple and blue correspond to the highest number density, green indicates intermediate densities, and red corresponds to the lowest number density. North is up and east is left on the diagram.