H₂ surface density distributions for detected pixels in control sample galaxies (black) as well as detected pixels on the leading half (orange) and trailing half (purple) of H I-tailed galaxies. H₂ surface density distributions are taken from the 720 pc resolution maps. Bin widths are set according to Knuth’s rule (Knuth 2006) using the histogram functionality within astropy.visualization. Compared to the control and trailing half, pixels on the leading half are skewed towards higher H₂ surface densities.