Relative difference in radii of water dominated exoplanets (50 wt.% H₂O, 30 wt.% Mg₂SiO₄, 20 wt.% Fe) using different water EoS. The light blue lines show the relative difference between QEOS (Vazan et al. 2013) and AQUA (Haldemann et al. 2020), while the blue lines show the relative difference between ANEOS (Melosh 2007) and AQUA. The results are shown for four different outer boundary temperatures, while the outer boundary pressure is equal to the pressure of the vapor curve at the corresponding boundary temperature.