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

Model: p_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 (phot_lb_O1.dat)
-> JWST_NIRISS_SOSS_Ord2 (phot_lb_O2.dat)

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Algorithm = MultiNest
N_params = 14
N_live = 200
evidence_tol = 0.5

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Model Bayesian evidence:

-> ln Z = 984.36 +/- 0.32

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Best reduced chi-square:

-> chi^2_red = 1.89
-> degrees of freedom = 120
-> chi^2 = 226.38

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

R_p_ref     =   0.998 (+0.001) (-0.001) R_J
a1          =   1.20 (+0.51) (-0.49) 
a2          =   1.17 (+0.54) (-0.56) 
log_P1      =   -4.40 (+2.79) (-2.37) 
log_P2      =   -3.75 (+2.37) (-2.60) 
log_P3      =   0.33 (+1.15) (-1.30) 
T_ref       =   395.8 (+69.1) (-49.3) K
log_Na      =   -6.95 (+2.21) (-3.09) 
log_H2O     =   -2.97 (+0.51) (-0.48) 
log_CO2     =   -4.59 (+0.98) (-2.88) 
log_a       =   1.61 (+0.40) (-0.35) 
gamma       =   -3.17 (+0.55) (-0.61) 
log_P_cloud =   -0.43 (+1.23) (-0.84) 
delta_rel   =   -182.08 (+30.39) (-31.60) 

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

R_p_ref     =   0.998 (+0.003) (-0.003) R_J
a1          =   1.20 (+0.75) (-0.83) 
a2          =   1.17 (+0.76) (-0.91) 
log_P1      =   -4.40 (+4.68) (-3.44) 
log_P2      =   -3.75 (+4.14) (-3.83) 
log_P3      =   0.33 (+1.56) (-2.14) 
T_ref       =   395.8 (+151.1) (-78.9) K
log_Na      =   -6.95 (+3.37) (-4.63) 
log_H2O     =   -2.97 (+1.05) (-0.93) 
log_CO2     =   -4.59 (+1.77) (-6.42) 
log_a       =   1.61 (+0.94) (-0.63) 
gamma       =   -3.17 (+0.94) (-1.29) 
log_P_cloud =   -0.43 (+2.11) (-1.29) 
delta_rel   =   -182.08 (+61.63) (-63.92) 

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

R_p_ref     =   0.998 (+0.004) (-0.005) R_J
a1          =   1.20 (+0.80) (-1.12) 
a2          =   1.17 (+0.82) (-1.06) 
log_P1      =   -4.40 (+5.82) (-3.59) 
log_P2      =   -3.75 (+5.26) (-4.21) 
log_P3      =   0.33 (+1.65) (-2.32) 
T_ref       =   395.8 (+221.3) (-89.4) K
log_Na      =   -6.95 (+4.71) (-5.01) 
log_H2O     =   -2.97 (+1.75) (-1.21) 
log_CO2     =   -4.59 (+2.32) (-7.35) 
log_a       =   1.61 (+2.05) (-0.89) 
gamma       =   -3.17 (+1.37) (-2.90) 
log_P_cloud =   -0.43 (+2.38) (-1.69) 
delta_rel   =   -182.08 (+99.66) (-105.76) 

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

R_p_ref     =   1.00 (+0.01) (-0.01) R_J
a1          =   1.20 (+0.80) (-1.17) 
a2          =   1.17 (+0.83) (-1.13) 
log_P1      =   -4.40 (+6.06) (-3.59) 
log_P2      =   -3.75 (+5.37) (-4.23) 
log_P3      =   0.33 (+1.67) (-2.33) 
T_ref       =   395.8 (+373.9) (-94.6) K
log_Na      =   -6.95 (+5.51) (-5.02) 
log_H2O     =   -2.97 (+1.96) (-1.62) 
log_CO2     =   -4.59 (+2.63) (-7.40) 
log_a       =   1.61 (+2.79) (-1.09) 
gamma       =   -3.17 (+1.80) (-4.23) 
log_P_cloud =   -0.43 (+2.42) (-2.43) 
delta_rel   =   -182.08 (+140.61) (-173.72) 

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

R_p_ref     =   0.998 R_J
a1          =   0.87 
a2          =   1.17 
log_P1      =   -7.91 
log_P2      =   -2.17 
log_P3      =   1.13 
T_ref       =   464.7 K
log_Na      =   -5.42 
log_H2O     =   -3.33 
log_CO2     =   -4.59 
log_a       =   1.30 
gamma       =   -2.62 
log_P_cloud =   0.58 
delta_rel   =   -182.72