Posterior distribution of the most important internal structure parameters for HD 15337 b. The parameters depicted are the mass fractions of the inner iron core and water layer with respect to the solid part of the planet (which together with the mass fraction of the silicate mantle add up to 1), the molar fractions of Si and Mg in the mantle layer and Fe in the inner iron core and the logarithm with base 10 of the total mass of the H/He layer in Earth masses. The values and errors on top of each column correspond to the median and the 5th and 95th percentiles.