Corner plot showing the main parameters of the internal structure of planet b. The parameters are: the core mass fraction; the mantle mass fraction; the water mass fraction (all relative to the solid planet); the molar fractions of Fe, Si, and Mg in the mantle; the molar fraction of Fe inthe core; and the mass of gas (log scale). The dashed lines give the positions of the 16 and 84% quantiles, and the number at the top of each column gives the median and the 16 and 84% quantiles.