Magnetic field position angle histogram toward region N (top) and S (bottom). Black solid lines depict the angle median value i.e., 95^° for region N and (44^°, 153^°) for region S. Red dotted lines show the main direction of the CSO magnetic field orientation, 105^° and (33^°, 134^°) for regions N and S, respectively, as shown in Añez-López et al. (2020). Magenta dashed line is set perpendicular to the main filament orientation (i.e., F10-E, 100^°, Busquet et al. 2013). Magenta solid and dotted lines indicate the overall orientation of the polarization in the H and R bands, respectively (Santos et al. 2016).