Same volume of space as Fig. 3, but in RA–Dec–z coordinates. Each sphere represents one of the overdensity peaks, and is placed at its barycenter (see Table 1). The colour of the spheres scales with redshift (blue = low z, dark red = high z), and the dimension scales with the logarithm of M_tot quoted in Table 1. Small blue dots are the spectroscopic galaxies which are members of each overdensity peak, as described in Sect. 4.