Retrieved elemental abundances (relative to their solar values) from the simplified models (minimal set of chemical species needed to fit data). The solar elemental abundances assumed are C/H = 2.95 × 10⁻⁴ and O/H = 5.37 × 10⁻⁴ (Asplund et al. 2009). Separate retrievals are performed assuming grey versus non-grey clouds. Displayed are the median values of the posterior distributions and their 1-σ uncertainties. There is no C/H entry for NIRISS, because no carbon-bearing species are detected from that spectrum.