MESA hydrostatic profiles of 1 and 4 M_J at different evolutionary times, cut at an outer density ≈100 times (thin extended lines) or ≈20 times (thick lines only) that is lower than the innermost radius of the isentropic shell, just outside the core-envelope boundary. The gray lines show the Jovian values according to the popular French et al. (2012) model, and the vertical gray band reflects the current Jovian radius as a reference. From top to bottom: density ρ(r), temperature T(r), gravity g(r), thermal expansion coefficient α(r), and the inverse of the Grüneisen parameter Γ(r).