Plots for visual inspections. Black open circles are galaxies with known velocities within ±1500 km s⁻¹. Large open violet circles represent the position of each group or cluster detected by the FoF algorithm (arbitrary radius). Red filled circles are galaxies in these groups and clusters, but non-virialised. On the other hand, blue filled circles are galaxies in groups that are also virialised and are used to estimate the velocity dispersion and mass. Coral bands are filaments, whereas big, light-blue filled circles are nodes of the cosmic web (both from Chen et al. 2016). The red ellipse is centred at the position of the corresponding FG and has a radius of 5 Mpc at the redshift of the target. Green and blue ellipses are centred in the same position, but their radii are 50 Mpc and 100 Mpc, respectively.