Tomographic representation of $N_{{\text{H}}_2}\left(T\right)$ produced using the best-fit parameters (Λ, Γ). Each panel represents the partial column density map (defined by Eq. (B.4)) corresponding to a temperature bin ∆T (∆T = 75 K for the first three rows and ∆T = 150 K for the last row). The temperature T indicated in the top-right corner of each panel is the lower bound of the temperature interval on which the total column density is integrated (i.e., the upper bound is T + ∆T). Note: the color scale changes between rows.