Left panel: cumulative distribution of Lyα REW P(> REW) for the complete sample of redshift 6 and 7 galaxies in red and black, respectively. The lines are the best fit exponential functions of the two distributions. Right panel: same distribution but only for galaxies with M_UV >  −20.25 (the faint sample). The dashed line indicates the previously adopted fit to the distribution at z ∼ 6 (e.g., Dijkstra et al. 2011; LP14).