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Ψ##### POSEIDON Retrieval Output #####Ψ
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PLANET: HAT-P-18b_TACHELES

Model: T_no_spot

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Model wavelength range:

-> 0.55 - 2.9 um @ R = 20000

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Datasets:

-> JWST_NIRISS_SOSS_Ord1 (TACHELES_lb_O1.dat)
-> JWST_NIRISS_SOSS_Ord2 (TACHELES_lb_O2.dat)

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Algorithm = MultiNest
N_params = 15
N_live = 500
evidence_tol = 0.5

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Model Bayesian evidence:

-> ln Z = 986.19 +/- 0.21

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Best reduced chi-square:

-> chi^2_red = 1.52
-> degrees of freedom = 119
-> chi^2 = 180.65

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******************************************
1 σ constraints
******************************************

R_p_ref     =   1.002 (+0.002) (-0.001) R_J
log_g       =   2.73 (+0.04) (-0.04) 
a1          =   1.18 (+0.52) (-0.55) 
a2          =   1.15 (+0.52) (-0.57) 
log_P1      =   -4.50 (+2.91) (-2.28) 
log_P2      =   -3.57 (+2.49) (-2.72) 
log_P3      =   0.42 (+1.03) (-1.40) 
T_ref       =   509.6 (+108.3) (-81.9) K
log_Na      =   -5.09 (+0.78) (-1.00) 
log_H2O     =   -3.75 (+0.47) (-0.51) 
log_CO2     =   -4.44 (+0.63) (-0.66) 
log_a       =   0.96 (+0.37) (-0.28) 
gamma       =   -2.49 (+0.50) (-0.67) 
log_P_cloud =   -0.14 (+1.30) (-0.95) 
delta_rel   =   -139.29 (+38.38) (-39.88) 

******************************************
2 σ constraints
******************************************

R_p_ref     =   1.002 (+0.003) (-0.003) R_J
log_g       =   2.73 (+0.07) (-0.07) 
a1          =   1.18 (+0.76) (-0.91) 
a2          =   1.15 (+0.80) (-0.89) 
log_P1      =   -4.50 (+4.89) (-3.26) 
log_P2      =   -3.57 (+4.17) (-4.09) 
log_P3      =   0.42 (+1.48) (-2.23) 
T_ref       =   509.6 (+223.1) (-146.1) K
log_Na      =   -5.09 (+1.50) (-4.26) 
log_H2O     =   -3.75 (+0.94) (-0.86) 
log_CO2     =   -4.44 (+1.19) (-1.64) 
log_a       =   0.96 (+0.85) (-0.47) 
gamma       =   -2.49 (+0.87) (-1.55) 
log_P_cloud =   -0.14 (+1.98) (-1.37) 
delta_rel   =   -139.29 (+74.42) (-78.31) 

******************************************
3 σ constraints
******************************************

R_p_ref     =   1.002 (+0.005) (-0.005) R_J
log_g       =   2.73 (+0.12) (-0.11) 
a1          =   1.18 (+0.81) (-1.10) 
a2          =   1.15 (+0.85) (-1.05) 
log_P1      =   -4.50 (+5.87) (-3.48) 
log_P2      =   -3.57 (+5.10) (-4.39) 
log_P3      =   0.42 (+1.58) (-2.39) 
T_ref       =   509.6 (+332.9) (-194.0) K
log_Na      =   -5.09 (+2.47) (-6.65) 
log_H2O     =   -3.75 (+1.58) (-1.15) 
log_CO2     =   -4.44 (+1.77) (-6.62) 
log_a       =   0.96 (+1.71) (-0.63) 
gamma       =   -2.49 (+1.18) (-2.97) 
log_P_cloud =   -0.14 (+2.13) (-1.74) 
delta_rel   =   -139.29 (+114.85) (-139.49) 

******************************************
5 σ constraints
******************************************

R_p_ref     =   1.00 (+0.01) (-0.04) R_J
log_g       =   2.73 (+0.13) (-0.12) 
a1          =   1.18 (+0.82) (-1.16) 
a2          =   1.15 (+0.85) (-1.09) 
log_P1      =   -4.50 (+6.17) (-3.49) 
log_P2      =   -3.57 (+5.36) (-4.43) 
log_P3      =   0.42 (+1.58) (-2.41) 
T_ref       =   509.6 (+496.4) (-208.4) K
log_Na      =   -5.09 (+3.89) (-6.90) 
log_H2O     =   -3.75 (+2.67) (-1.57) 
log_CO2     =   -4.44 (+2.80) (-7.54) 
log_a       =   0.96 (+3.29) (-0.90) 
gamma       =   -2.49 (+1.36) (-6.13) 
log_P_cloud =   -0.14 (+2.14) (-3.90) 
delta_rel   =   -139.29 (+180.29) (-244.23) 

******************************************
Best-fitting parameters
******************************************

R_p_ref     =   1.003 R_J
log_g       =   2.70 
a1          =   0.57 
a2          =   1.81 
log_P1      =   -7.02 
log_P2      =   -2.40 
log_P3      =   0.91 
T_ref       =   552.2 K
log_Na      =   -4.98 
log_H2O     =   -4.13 
log_CO2     =   -4.59 
log_a       =   0.72 
gamma       =   -2.06 
log_P_cloud =   -1.20 
delta_rel   =   -146.04