Notes. (1) and (2) are the ID and redshift as in Table 1; (3) number of spectroscopic galaxies used to compute the velocity dispersion (see Sect. 4.1 for details); (4) redshift computed with the biweight method; (5) velocity dispersion computed with the biweight method (for peak [1]) and gapper method (all other peaks), with their uncertainties estimated with the bootstrap method; (6) virial mass computed as described in Sect. 4; (7) number of spectroscopic galaxies found in the literature and different from the galaxies listed in Col. (3); (8) and (9) are as Cols. (5) and (6) but computed by using the ensemble of galaxies of Cols. (3) and (7); (10) references where the literature spectroscopic redshifts are taken from: 1- Casey et al. (2015); 2- Kriek et al. (2015); 3- Trump et al. (2009); 4- Diener et al. (2015); 5- Chiang et al. (2015); 6- Perna et al. (2015); 7- Wang et al. (2016). Values in Cols. (4), (5), and (6) are computed using the number of galaxies mentioned in Col. (3). See Sect. 4 for more details. ^{( * )}For the velocity dispersion of peak [7] we refer the reader to the discussion in Appendix A.2.