Primary and secondary γ-ray spectra for the “only voids” magnetic field profile (only regions with B ≤ 10⁻¹² G are taken into account). Different subplots represent different parameters of the source. Solid black and gray lines are the intrinsic and observed primary source spectra. Dashed yellow lines show the secondary γ-ray flux for a zero line of sight magnetic field. Solid red lines show the secondary γ-ray flux with a nonzero magnetic field in the voids.