Notes. Top half: observational parameters taken from Guillot & Gautier (2015) – planet mass M_p, mean radius R_p, present-day effective temperature T_eff – as well as present-day equilibrium temperature T_eq. Bottom half: model parameters used in this work – outer envelope metallicity Z₁, mass value m₁₂ that marks the outside edge of the TBL, and core mass m_core expressed in units of Earth masses M_E using a value of M_E = 5.9722 × 10²⁴ kg. The inner envelope metallicity is Z₂ = 1 unless otherwise noted. ⁽¹⁾The given uncertainty in M_P is the relative uncertainty of the gravitational constant G given by Cohen & Taylor (1987), which was used to calculate the M_P values presented here.