Distribution of XC from 1000 Monte Carlo realisations of of 1000 simulated events with energy above 60 EeV. The adopted mean source density is ns = 10-5 Mpc-3. The dotted curves represent the isotropic model, the hatched curves denote the LSS model and from left to right we have ⟨ τ ⟩ 100 = 0.1, ⟨ τ ⟩ 100 = 1, and ⟨ τ ⟩ 100 = 3.
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