Fig. 6.

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Gamma-ray spectra computed in the conventional (Base) and γ-optimized CR transport scenarios compared to IceCube (Aartsen et al. 2019b) and CASA-MIA (Borione et al. 1998) upper limits. Since those data refer to different regions of the sky, they are rescaled as described in Aartsen et al. (2019b; see Fig. 12 in that paper). The contribution of unresolved sources is not included here.
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