ML vs. previous methods. As in Fig. 4, the x-axis shows the true line-of-sight Log(N_H) values determined by spectral fitting while the y-axis shows the Log(N_H) values predicted by our machine learning algorithm (blue circles) and by the Pfeifle et al. (2022) relation (magenta triangles). The errors from our algorithm were calculated statistically as described in the caption of Fig. 4. No errors are included on the magenta points for readability purposes.