Comparison between column densities derived in this work (N_M) and in Schuller et al. (2021) (N_S) using a combinations of Herschel and ArTéMiS observations. Frame a: This work. Frame b: Schuller et al. (2021), APEX project 098.F-9304. Frame c: Difference between this work and that of Schuller. The contours correspond to N_M = (0, 0.25, 0.5, 1.0) × 10²³ cm⁻² Frame d: Comparison plot between N(H₂) values. The black dashed line represents a 1–1 relation, while the colored lines give the linear fits between N_M and N_S, with colors corresponding to the contours in frame c.