Maps showing the degree of linear polarization P_l (color-coded) overlaid with normalized orientation vectors for the three distinct wavelengths of λ = 46 μm (left column), λ = 93 μm (middle column), and λ = 1.3 mm (right column) at an inclination angle of 90°. The top row shows the maps considering IDG alignment, while the bottom row shows the results considering RAT alignment. The numbers in the right bottom panel correspond to the LOS shown in Figs. 5 and 6. Only the panels for λ = 93 μm trace the helical magnetic field.