Evolution of the as a function of the DM mass m_χ in the case of direct annihilation into standard model particles (left panel) and annihilation into four leptons through light mediators (right panel). The results of the analysis are displayed using a Fisk potential of 830 MV, 724 MV, and 647 MV in red, green, and blue, respectively. The black dashed line represents the minimal among the seven Fisk potentials and 54 propagation models. The thickness of the coloured band is obtained by scanning over the 54 propagation models.