Diagram of the HD 108236 system. We show the scaled semi-major axis, a/R_★ (bottom axis) and the respective orbital period of the planets (in units of planet f’s period, top axis). We mark the relevant main mean motion resonances with vertical lines. The relative orbital inclination (90° − i) of each planet is shown in the left axis. The symbol size scales with the planetary radius in units of Earth radius; and the color with the equilibrium temperature of the planet (with A_B = 0).