Statistical experiment to understand the cuts of Lyman α luminosity on EW₀. Left panel: Lyman α EW₀ over Lyman α line luminosity for 10 000 simulated objects (purple dots). The dashed lines indicate different luminosity cuts in the Lyman α line at log₁₀(L_Lyα[erg s⁻¹]) = [41.5,42,42.5,43]. Right panel: Lyman α EW₀ over the UV continuum luminosity. The different colours correspond to the different line luminosity cuts in the left panel.