Boost for modified gravity with f_R0 = −10⁻⁵ and GR for different parameter variations. The ratios are shown in the larger panels for three different parameter values, while the narrower panels connected to each large panel show the corresponding ratios of ratios for the three different parameter values, with the middle value as the baseline. The parameters are varied while holding the rest constant, and the fiducial test cosmology is given in Table 1. When varying Ω_cdm, Ω_b is kept constant, meaning that Ω_m varies accordingly. When Ω_b is varied, Ω_cdm also varies so that Ω_m is kept constant at a value of 0.32. There is no screening invoked for the f(R) simulations. The M_ν parameter refers to the sum of the neutrino masses and is given in eV. Note the different axes for the first row narrow panels compared to the rest.