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Table 4

Free parameters and priors for the retrievals.

Parameters Bounds
GJ 1214 b HD 189733 b WASP-121 b
Ttop (K) 100–2000 500–2500 450–3750
Tbot (K) 100–2000 500–2500 450–3750
T1 (K) 100–2000 500–2500 450–3750
T2 (K) 100–2000 500–2500 450–3750
log10(P1) (Pa) 2–6 2–6 2–6
log10(P2) (Pa) −1 to 6 −1 to 6 −1 to 6
log10(Pclouds) (Pa) −2 to 6 −2 to 6 −2 to 6
Radius (Rjup) 0.1–0.5 0.5–2.0 1.0–2.5

Chemistry

Equilibrium
log(Z) −1 to 3 −1 to 3 −1 to 3
C/O 0.01–2 0.01–2 0.01–2
Constant
log10(H2O) −12 to −1 −12 to −1 −12 to −1
log10(CO) −12 to −1 −12 to −1 −12 to −1
log10(CH4) −12 to −1 −12 to −1 −12 to −1
log10(CO2) −12 to −1 −12 to −1 −12 to −1
log10(HCN) −12 to −1 −12 to −1 −12 to −1
log10(NH3) −12 to −1 −12 to −1 −12 to −1
log10(FeH) −12 to −1 −12 to −1 −12 to −1
log10(SiO) −12 to −1 −12 to −1 −12 to −1
log10(Na) −12 to −1 −12 to −1 −12 to −1
log10(K) −12 to −1 −12 to −1 −12 to −1
log10(TiO) −12 to −1 −12 to −1 −12 to −1
log10(VO) −12 to −1 −12 to −1 −12 to −1

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