(a) Sampling results of filament width. The background is the H₂ column density with the Filfinder mask applied. The red curves represents the filament spines. The thin red lines are vertical cuts perpendicular to the filament spine at each sampling interval. The blue dots are the density peaks on each cut. (b) and (c) The width fitting results for F1 and F2, along with the profile peak height, flattening radius, and density profile index, are noted in the upper left corner of the panels. The blue curves represent the Plummer function fitting curves, and the blue dashed line indicates the fitting interval of the Plummer function. The horizontal green solid line in the panel of (c) represents the fitting background straight line, and the green shaded region indicates the area of the baseline fitting, which uses a linear function, with the equation shown in the upper left corner of the panel. Due to the lack of a flatter region in the profile peak distribution of F1, the baseline fitting of the profile peak distribution is not performed for F1.