Evolution of the planet radius as a function of the age. KOI-206b with mass 2.82 M_Jup and effective temperature 1776 K is plotted to the left, KOI-614b (2.86 M_Jup and 1000 K) in the center plot, and KOI-680b (0.84 M_Jup and 1729 K) in the right plot. The 68.3%, 95.5%, and 99.7% joint confidence regions are denoted by black, dark gray, and light gray areas, respectively. The curves represent the thermal evolution of a respective planet mass and equilibrium temperature. Text labels indicate the amount of heavy elements in the planet (its core mass in Earth masses). Dashed lines represent planetary evolution models for which 0.25% of the incoming stellar flux () is dissipated into the core of the planet, whereas plain lines do not account for this dissipation (standard models). Dashed-dotted lines (gray shades) are coreless models with higher amounts of dissipated energy, as labeled.