Measured UV magnitude and column density. Halo masses for our objects are derived from UV magnitudes (Mason et al. 2023, no dust model). The well-constrained column densities of our sample are consistent with results from SERRA simulations (Gelli et al. 2025). The grey contours represent the average column density of 100 galaxies over random sight-lines, with the 1σ error region also shown, representing the scatter across sightlines in simulations.