Notes. Columns are as follows: (1): order number or ID of the group (see text); (2): ID of the group from Tempel et al. (2014b) (Gr 3070 correspond to the Abell cluster A2142); (3): number of galaxies in the group, N_gal; (4)–(5): group centre right ascension and declination (in degrees); (6): group centre comoving distance (in h⁻¹ Mpc); (7): group distance from the centre of the cluster A2142 (for brevity, clustercentric distance) (in h⁻¹ Mpc); (8): group virial radius (in h⁻¹ Mpc); (9): group total luminosity (in 10¹⁰ h⁻² L_⊙); (10): dynamical mass of the group assuming the NFW density profile, M_dyn, (in 10¹⁴ h⁻¹ M_⊙); (11-12): luminosity-density field values at the location of the group, D1 and D8, in units of the mean density as described in the text. (13): magnitude gap between the two brightest galaxies in a group. (14): difference between the velocity of the main galaxy in a group, and mean group velocity (in km s⁻¹). (15): connectivity C (the number of filaments or subsystems connected to a group).