MZ and FMR relation for the Steidel et al. (2014) sample. Left panel: MZ relation is shown; galaxies are colour coded into three bins based on their measured SFR. The black solid line shows the z = 0 M10 MZ relation using SDSS galaxies; the observed offset from the z ∼ 2 galaxies is due to the evolution of the MZ relation. The error bars represent the 1σ dispersion in each bin. Right panel: FMR μ_0.32 projection for the same data points; the black points indicate medians in bins of μ_0.32, showing that the Steidel et al. (2014) z ∼ 2.3 sample is reasonably reproduced by the FMR defined with SDSS galaxies at z = 0 (shown in black).