Weak-lensing masses ($M_{500}^{\mathrm{WL}}$ [${10}^{14}{h}_{70}^{-1}{M}_{\odot }$]) versus redshift. The symbols are the same as in Fig. 1. Colors denote the background number density, n_den [arcmin⁻²]. The gray solid line and regions are the mean and 1σ region for the WL mass distribution in the parent sample obtained by the multivariate scaling relation analysis (Sect. 3.4), respectively.