K_p−Δv_sys diagrams for the free retrieval maximum-likelihood model for each target, omitting six principal components. The maps are computed with the log-likelihood function, and converted to SNR by first median subtracting each row of constant K_p and then dividing by the standard deviation of the K_p < 0 region. The nominal planetary K_p and Δv_sys are indicated in dashed red, and the red dot indicates the location of maximum SNR in the K_p−Δv_sys map. All targets are detected at SNR > 6. KELT-20 b and WASP-33 b are very strongly detected at SNR > 10, while WASP-189 b, MASCARA-1 b, and TOI-1518 b are detected at SNR > 7. KELT-9 b is the most weakly detected at SNR = 6.7, despite a total observation SNR substantially greater than was obtained for WASP-33 b. This discrepancy could be explained by dissociation of nearly all molecules in KELT-9 b, which is the hottest target by a margin of more than 1000 K. For all targets, the maximum in the K_p−Δv_sys diagram is consistent with the expected K_p and Δv_sys, and dominates over other features in the map, providing confidence that the features being fit in the retrieval are associated with the planet and not with uncorrected residuals.