Left panels: synthetic magnetic field lines (red vectors) plotted on top of observed Band 7 Stokes I contours (5–45 mJy beam⁻¹ in steps of 5 mJy beam⁻¹), polarized intensity (grayscale with same intensity levels of Fig. 1), and magnetic fields (blue vectors, which are 90°-rotated with respect to Fig. 1). The red vectors result from our rotating disk modeling assuming different k = B_p ∕B_ϕ values. Figure 6 is shown in the upper left panel for reference. Right panels: residuals from each case, with mean δPA = PA_data − PA_model values and standard deviation σ indicated oneach histogram panel.