Attenuation–M_* relation (top panel) and the SFR–M_* relation (bottom panel) derived from the EWS-SF_sim stacked mock spectra. The attenuation is measured using the Balmer decrement (Hα/Hβ ratio), whilst the SFR is calculated from the dust-corrected Hα luminosity, applying the Calzetti et al. (2000) extinction law and assuming case B recombination conditions (electron density of 100 cm⁻² and temperature of 10 000 K. The panel layout follows the structure of Fig. 14. Shaded regions represent the 1σ uncertainties in the measured quantities.