Polarized intensity image of NGC 4217 from Stokes Q and U at C-band with a σ of 13.5 μJy beam⁻¹. The robust parameter of clean was set to two, smoothed to a resulting beam size of 18″ × 18″, shown in the bottom left. Total intensity (Fig. 1 smoothed to 18″) contours at 3, 120, 360, 690σ levels with a σ of 7.0 μJy beam⁻¹. The apparent magnetic field orientations, not corrected for Faraday rotation, are shown in black and clipped below 3σ.