Physical quantities along the a exemplary LOS #1 in the bottom right of Fig. 3. The vertical red lines indicate the borders between the first outer region (l₀ − l₁), the interior of the outflow lobes (l₁ − l₂), and the second outer region (l₂ − l₃). Left panel: normalized values of polarized intensity I_p (green), dust number density n_d (blue), and its first derivative dn_d(l) / dl (dotted black). The polarized intensity I_p is plotted as a cumulative value. Right panel: orientation angles of linear polarization χ_Pl (blue) and magnetic field direction θ_B (black). An orientation angle of 0° corresponds to vertical polarization vectors in all figures shown in this paper.