Differences in the partial integrals for differences in Π₀ (cf. Eq. (F.7)) between the original LPCODE 2.5 M_⊙, 10 R_⊙ solar-calibrated model and the ASTEC model, in the sense (LPCODE) – (ASTEC). The dashed and dash-dotted lines show the contributions δ_rℐ[δ_rℬ] and δ_rℐ[δ_r𝒢] from δ_rℬ and δ_r𝒢, respectively, and the solid line shows their sum. For comparison, the dotted line shows the relative difference in ℐ.