Summary of the polarization slope trends for the PL-distributed parameter space reported in Table 2. Each subpanel refers to the three different values of q = [0, −1.0, −1.5], as reported in the subpanel title. Top panels: Low-energy (a_l, left panels) and high-energy (a_h, right panels) polarization slopes as a function of the dispersion in the electron energy distribution index, Δ_p. Middle panels: a_l and a_h as a function of the minimum cell size ratio, r_min. Bottom panels: a_l and a_h as a function of the minimum cutoff ratio, ${\gamma }_{\mathrm{cut}}^{\min .\mathrm{ratio}}$. Different colors correspond to the different f_γcut PDF reported in the top legend.