Parameter space scan for Mixed Composition Dip Model in the internal shock scenario. Here is shown as a function of R and L_γ for the fit to cosmic ray data of the Pierre Auger Observatory (Valiño et al. 2015; Aab et al. 2014) above 10¹⁸ eV; pure silicon injection with k = 1.8 is assumed. The sources are distributed in the range from z = 0 to 6 following the star formation rate (SFR). The blue squares mark the current (90% C.L.) IceCube-excluded region from the GRB stacking analysis from northern and southern sky muon tracks Aartsen et al. (2015, 2017), while the green squares mark the current (90% C.L.) IceCube-excluded region from the cosmogenic neutrino analysis (Aartsen et al. 2016), applied to . The contours show the nuclear loading ( log₁₀ξ).