Table 5
Log-evidence for retrievals with and without CH4.
| S/N | 10 | 15 | 20 | ||
|---|---|---|---|---|---|
| Nominal Case | R=35 | ln  |
−23.6 ± 0.2 | −27.0 ± 0.2 | −28.8 ± 0.2 |
ln  |
−23.7 ± 0.2 | −27.2 ± 0.2 | −28.8 ± 0.2 | ||
| log10 (K) | 0:0 ±0.1 | 0.1 ±0.1 | 0.0 ±0.1 | ||
| R=50 | ln  |
−25.1 ± 0.2 | −27.8 ± 0.2 | −29.8 ± 0.2 | |
ln  |
−25.4 ± 0.2 | −28.4 ± 0.2 | −30.6 ± 0.2 | ||
| log10 (K) | 0.1 ±0.1 | 0.3 ±0.1 | 0.3 ±0.1 | ||
| Optimized=Case | R=35 | ln  |
−24.8 ± 0.2 | −27.9 ± 0.2 | −30.2 ± 0.2 |
ln  |
−24.9 ± 0.2 | −28.2 ± 0.2 | −30.1 ± 0.2 | ||
| log10 (K) | 0.0 ±0.1 | 0.1 ±0.1 | 0.0 ±0.1 | ||
| R=50 | ln  |
−26.7 ± 0.2 | −29.6 ±0.2 | −31.5 ±0.2 | |
ln  |
−28.8 ±0.2 | −31.7 ±0.2 | −35.1 ±0.2 | ||
| log10 (K) | 0.8 ±0.1 | 0.9 ±0.1 | 1.6 ±0.1 | ||
Notes. With 
; Without 
. The results are for input spectra covering the 3–20 μm wavelength range. The last row for a given R lists log10 (K) of the Bayes’ factor K, which we calculate via: 
(derived from Eq. (5)). We compare the performance of the models with and without CH4 to each other using Jeffrey’s scale (Jeffreys 1998) (see Table 1). The ± indicates the 68% confidence interval log10 (K).
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