Notes. Name refers to the official IAU name. XLSSC refers to the official XMM-LSS name. PH gives the availability of CFHTLS T0004 photometric redshifts: 0/1 = not available/available. RA and Dec are the decimal J2000 coordinates of the X-ray emission center. N is the number of galaxies with spectroscopic redshifts belonging to the identified structure and within a radius of 500 kpc. ZBWT is the biweight estimate of the mean redshift of the structure (at a 0.001 precision). ERRZ is the upper value of the bootstrap uncertainty on ZBWT, at a precision of 0.001. It was computed only when more than five redshifts were available. SIG-GAP is the “Gapper” estimate of the velocity dispersion given in km s^-1. ERR is the bootstrap uncertainty on SIG (computed when  ≥ 5 redshifts were available). Flux is the value of the [0.5;2] keV flux in 0.5 Mpc (radius) in 10^-14 erg/cm²/s. L_x is the bolometric (0.1 to 50 keV) X-ray luminosity (in 10⁴³ erg/s) derived from the observed flux. N_NP is the net number of photons in 0.5 Mpc. The two last columns give name and redshift (when available) when the considered cluster was also detected by Hamana et al. (2009), Ueda et al. (2008), or Finoguenov et al. (2010). When taken from Hamana et al. (2009), the cluster name has the SL Jhhmm.mddmm format. When taken from Ueda et al. (2008), the cluster name refers to this paper (4 digits number). When taken from Finoguenov et al. (2010), the cluster name refers to this paper (with the SXDF root). The * symbols indicate that the cluster validation was made with one or two spectroscopic redshifts. The (l) attached to the cluster id means that we have a lack of precision in the measured galaxy redshifts, which prevents us from computing the uncertainty of the mean cluster redshift and the velocity dispersions.