Mean radial column density profiles of the B213 (left) and B211 (right) segments of the filament for both the north-eastern (in blue) and south-western (in red) sides. In both panels, the black dashed curve represents the mean of the best-fit Plummer models to the north-eastern and south-western profiles, truncated at r = 0.4 pc where the backgrounds start to diverge significantly between the two sides. The crests defining the B213 and B211 segments considered here can be seen in Fig. 3a. The B213 segment has a slightly shallower profile (p ≈ 1.7) and a smaller flat inner radius (Rflat ≈ 0.025 pc) than the B211 segment (p ≈ 2.6 and Rflat ≈ 0.06 pc). The detailed parameters of the model fits are given in Table B.1.
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