X_LAE vs. M₁₅₀₀ for EW(Lyα) ≥ 50 Å at z ≈ 3-4. Our X_LAE at z ≈ 3.3 (≈2.9–3.7) and z ≈ 4.1 (≈3.7–4.4), are indicated by filled and open magenta stars, respectively. Stark et al. (2010)’s X_LAE at z ≈ 3.5–4.5 is shown by filled grey squares. The open grey square indicates the corrected X_LAE value of Stark et al. (2010) at M₁₅₀₀ = −19 mag (see Sect. 4.1.1). For visualization purposes, we slightly shift the magenta open stars and the grey open square along the abscissa and show the width of M₁₅₀₀ only for the red filled stars.