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Fig. B.1

image

Scatter plot showing the dependence of magnetic field inclination on the umbra area. A black cross marks the observed data points. The line colour denotes the model complexity of the Bayesian linear regression; blue shows a constant model, red a linear model, and green a quadratic model. The solid lines mark the most probable value estimated by the corresponding model, and the dashed lines mark the 99% confidence interval of the estimated model.

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