Ratio of the flux observed in the F115W filter relative to the expected F115W from our PROSPECTOR SED fitting (described in Section 5). The data points are colour coded by the inferred neutral hydrogen column density, discussed in Section 5. We note here that the circular data point is simultaneously a strong LAE and DLA, and hence we utilise the spectroscopically measured N_HI from Witten et al. (in prep.). The majority of galaxies show a strong suppression in the F115W filter that is best explained by high neutral hydrogen column densities (N_HI > 10²² [cm⁻²]), which has been seen in the galaxies for which deep NIRSpec prism observations are available (Chen et al. 2024; Witten et al. 2025a; Mason et al. 2026).