ΔT_th, ΔR, and Δa_ℓ, 0 from ℓ = 1 to ℓ_max = 6 for the considered BE-like distortion models. The inset in the top-right panel shows separately the case with the highest value of μ₀, which cannot be appreciated in the main panel as it is targeted to much lower values of μ₀, in order to appreciate the extremely similar spectral shape of the red and green lines. Except in the top-right panel where ΔR is shown in linear scale, solid lines (or dots) correspond to positive (or negative) values. See also the legend and the text.