Planet radii and densities for planets having ﹩{R}_{P}﹩ = 4–8 ﹩{R}_{\oplus }﹩ where density is measured to better than 50%. We have also included those planets with one-sigma radius measurements consistent with 4–8 ﹩{R}_{\oplus }﹩. The symbol color represents the (zero-albedo) equilibrium temperature. The symbol shape indicates the observational technique used to measure planet mass. Triangles and circles represent RV and TTV measurements, respectively. Planets taken from the Exoplanet Orbit Database and from Bakos et al. (2015). Note: planets from the Kepler prime mission are designated with “K” (e.g., K-79d is Kepler-79d).