Internal profiles as functions of radial distance from the centre for M∕M_⊕ = 0.6 for all modelled ΔT_TBL and compositions for the temperature (left column), pressure (middle column), and density (right column). The solid curves correspond to Type-1 planets, the dashed curves to Type-2 planets and the dotted curves to Type-3 planets (see text for details). Since hydration tends to steepen the temperature gradient in the mantle, the Type-2 planets exhibit generally higher temperatures in the interiors than their Type-1 and Type-3 analogues.