Median IGM transmission Tr(Lyα) derived from the LOS towards 2127 VUDS galaxies (full red circles). IGM transmission values are computed from the distribution of IGM transmission measurements resulting from the fit with GOSSIP+, in redshift bins δz = 0.5 at a mean redshifts 2.75, 3.25, 3.75, and 4.25 and in a redshift bin δz = 0.8 at z = 4.8, and using a dust extinction limit E(B−V) ≤ 0.15. The error bars represent the 68% interval in the distribution of IGM transmission values as measured from the 2127 LOS probed by the VUDS galaxies. The empty red circles at z > 4 represent the measurements obtained when setting the dust extinction limit to E(B−V) ≤ 0.05. The blue triangles and associated error bars are median transmission and 1σ dispersion values taken from Faucher-Giguère et al. (2008b). At z > 4, points have been artificially shifted in redshift for clarity.