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Table 4

Results of atmospheric retrievals on the 600B data analysed using different methods.

Method Mean radius (ρ¯)$\[(\bar{\rho})\]$ Slope (α) ΔρNa χr2$\[\chi_{\mathrm{r}}^2\]$
Gibson et al. (2017) spectrum 0.12565 ± 0.00021 −3.38 ± 1.34 0.00125 ± 0.00086 0.73
1D GP re-analysis 0.12572 ± 0.00024 −3.31 ± 1.29 0.00120 ± 0.00106 0.70
Analogous 2D GP analysis 0.12539 ± 0.00026 −3.92 ± 1.46 0.00142 ± 0.00069 1.17
2D GP: lower maximum prior on lλ 0.12537 ± 0.00026 −3.89 ± 1.62 0.00138 ± 0.00068 1.17
2D GP: without mean radius prior 0.12348 ± 0.00362 −3.92 ± 1.41 0.00154 ± 0.00069 1.20
2D GP: varying T0, a/R*, b 0.12538 ± 0.00026 −4.05 ± 1.53 0.00138 ± 0.00070 1.20
2D GP: direct atmospheric retrieval 0.12536 ± 0.00026 −4.17 ± 1.45 0.00144 ± 0.00069 N/A

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