Results of the S/N grid analysis for KELT-11 b. Shown are the retrieved S/N values of injected synthetic models with varying molecular abundances and cloud deck pressures (in bar) for H₂O, H₂S, and CH₄ (note the different colour scales). The dashed lines indicate the thresholds corresponding to a S/N of 1 (green), 3 (teal), and 5 (purple). Notably, the S/N for CH₄ is consistently below 3, so only the S/N=1 threshold is shown.