Four projections of FMR: MZR (top left), metallicity-SFR relation (top right), metallicity versus sSFR (bottom left), and metallicity versus log M_⋆ − αlogSFR (bottom right, inside this panel, the scatter as a function of α is reported) for VIPERS (blue dots), SDSS (orange dots), SDSS p-control (green dash-dotted line), and SDSS d-control (red dotted line). The shaded areas show the 1σ_dist, while the black error bars show the 1σ_med for the metallicity. We report the number of galaxies in each sample in the legend. The vertical black solid line indicates the M_⋆ (log M_⋆[M_⊙] = 9.75) below which the MZR at intermediate redshift flattens. The vertical black dashed line in the MZR plane shows the most conservative mass limit for completeness (log M_⋆[M_⊙] = 10.47 for 0.65 < z < = 0.8) in the redshift range observed by VIPERS (Davidzon et al. 2016). For each sample, we report the number of galaxies in the legend.