SB ratio of the Lyα SB profile from undetected LAEs and the redone stacked profile from Wisotzki et al. (2018) at 3 < z < 5. The ratios at R = 90 pkpc are lower limits. Undetected LAEs are assumed to cluster like the extrapolated HOD model for L_min = 10^38.5 erg s⁻¹ and resolved sources like those in the MUSE-Wide sample. The colors represent different minimum Lyα luminosities for the undetected sources. The symbols display various faint-end slopes of the Lyα LF. The dashed line shows a scenario in which the undetected LAEs alone fully explain the apparent Lyα SB profile. A pseudo-NB width of 600 km s⁻¹ is assumed.