Same as Fig. C.1 but for ϵ₂, which governs deviations in halo concentration for high-mass haloes that have retained their gas. Increasing ϵ₂ increases halo concentration and this generally boosts power. From the top right we see this has the largest impact for higher mass haloes because these have retained most of their gas. From the left-hand panels, this has comparatively more of an impact on power spectra involving gas than on the other spectra. We can also see some effects on spectra that involve the electron pressure.