This figure (Fig.5 of the paper) illustrates the domain of applicability of the fit and of the code.
Points in the ρT plane where the input data have
been used to construct the analytical fit. Different symbols correspond to
different phase states: crosses for liquid, asterisks for plasma, upright
triangles for superionic state, and reverted triangles for ice X. The colors
of the symbols represents the accuracy of the fit (for both pressure and internal energy,
i.e., the maximum of the two residuals) according to the palette above the
legend.
The lines show isentropes of Jupiter (J), according to the models of
Leconte & Chabrier (2012) and Nettelmann et al. (2012) (the solid and dashed
lines, respectively), Saturn (S), according to Leconte & Chabrier (2012),
Neptune (N) according to two models of Nettelmann et al. (2013) (solid and
dashed lines), and a planet with M=9M_{J}
(Baraffe et al. 2008, 2010).

