ΔT_th, ΔR and Δa_ℓ, 0 from ℓ = 1 to ℓ_max = 6 for the considered non-equilibrium models. Solid lines (or dots) correspond to positive (or negative) values. Green and light blue lines are essentially superimposed up to ℓ = 4, where only one of the two lines can be appreciated. Their difference multiplied by a factor F to have values compatible with the adopted range is displayed by the blue lines. Yellow lines refer to the nominal integration error quoted by the routine D01AJF, again multiplied by the factor F. See also the legend and the text.