Central temperature (left column), central pressure (middle column), and M-R relation (right column) for the Type-1 planets. The different rows correspond to different assumed values for ΔT_TBL (see annotations at the right). While the core temperature increases significantly for higher ΔT_TBL the central pressure and radius remain vastly unaffected. The mass-radius relations for pure H₂O, MgO and Fe are shown for reference.