Details of models with three layers. Panels a, b, and c: J₄ vs. J₆ for three-layer models calculated using different equations of state for H, indicated in the figure. Cyan squares show the Juno measurements , and gravitational harmonics corrected by differential rotation - the ones to match with our interior models - are shown in red. Panel d: histogram showing the difference in heavy elements (ΔZ = Z₂ - Z₁) between the H_metallic- and H₂-dominated layers.