Simulated density, velocity, pressure, temperature, neutral hydrogen (H I), neutral helium (He I), single-ionized helium (He II), and double ionized helium (He III) fractions, for the case of HD 97658 b. The thick solid black lines trace the profiles as calculated by ATES, to be compared to those obtained by TPCI (S16), shown as dashed red lines. We note that the He III curves in the bottom right panel practically overlap.