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Table 1.

Most probable values and 68% and 95% credible limits for Compton and Thomson models applied to synthetic data.

Quantity 95% lower limit 68% lower limit Most probable value 68% upper limit 95% upper limit
Compton fit to Compton model
Req (km) 11.99 12.00 12.01 12.02 12.03
θ (deg) 35.6 35.8 35.9 36.0 36.2
ρ (deg) 4.99 5.00 5.00 5.01 5.01
T (MK) 3.121 3.125 3.128 3.131 3.135
log (σi) 0.868 0.869 0.869 0.870 0.872

MCPHAC fit to Compton model
Req (km) 11.99 12.00 12.01 12.02 12.03
θ (deg) 35.5 35.6 35.8 35.9 36.0
ρ (deg) 4.95 4.96 4.96 4.96 4.97
T (MK) 3.136 3.139 3.142 3.145 3.148
log (σi) 0.980 0.993 1.007 1.020 1.032

Notes. The quantities shown in the Table are equatorial radius Req, spot co-latitude θ, spot angular radius ρ, hotspot temperature T, and intrinsic scatter logσi. The correct values for the model parameters are Req = 12 km, θ = 36°, ρ = 5°, and T = 3.133 MK.

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