Cloud particle load in terms of mass density ratios (top; ρdust∕ρgas) and the C/O element ratio (bottom) at the equator (left) and in the northern hemisphere (right) of the WASP-18b atmosphere profiles. C/O remains at the solar value of 0.53 for profiles without forming clouds (ϕ = − 45°, 135°). For other mineral ratios such as Fe/Si and Mg/Si, we refer to Appendix A (Figs. A.2– A.12).
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