The arriving energy flux expected from the UHE photon emission escaping from a magnetised region with average magnetic field strength nG for 1ES 0229+200. The injected luminosity normalisation in UHE photons is L₀ = 10⁴⁵ erg s^-1 (see text for details). The dashed black line gives the injected UHE photon spectrum, the grey dotted line shows the spectrum that escapes from the magnetised region. The green solid line and blue dot-dashed line show the expected attenuated spectra using the EBL model of Kneiske & Dole (2008) and Franceschini et al. (2008) respectively.