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Table 3

Number of free parameters of the forward models considered in this study.

Name of the model Abbreviation NChem NTemp NClouds NPhys NTotal
Sonora-Diamondback GM–SD 1 1 1 3 6
Exo-REM GM–ER 2 1 0 3 6
BT-Settl CIFIST GM–BT 0 1 0 3 4
Free chemistry (clear) FM–FC 9 4 0 2 15
Free chemistry (clear) + 13CO FM–FC13 10 4 0 2 16
Chemical (dis)equ. (clear) FM–CD 3 4 0 2 9
Chemical (dis)equ. + cloudy FM–CDCL 3 4 1 2 10

Notes. Notation: NChem indicates the number of free parameters governing the chemistry of the atmosphere, e.g. C/O, [Fe/H], Xi, etc; NTemp indicates the number of free parameters describing the temperature of the atmosphere, e.g. Teff, Tequ, etc.; NClouds indicates the number of free parameters for the modelling of clouds, i.e. fsed or log (Pcloud); NPhys indicates the number of free parameters for the modelling of clouds, i.e. fsed or log (Pcloud); NTotal indicates the total number of free parameters.

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