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Fig. 5.


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Box plots showing the evolution of the marginal posteriors inferred for 22 magnetograms along the emergence of AR 10268. Each panel shows the evolution of the model parameters: (a) a, (b) B0, (c) R, (d) d0, (e) ϕ, (f) Nt, (g) xc, and (h) yc. Blue and orange boxes compare the marginal posteriors obtained using σ = 10 G and σest = 300 G, respectively. The boxes represent the three-quartile values of the distribution (so boxes contain the 50% central part of the distribution) and the whisker extensions are fixed by a factor 1.5 of the inter-quartile range. The blue and orange lines mark the evolution of the mean value of the marginal posteriors for either σ or σest. Panel e: the tilt values obtained using two different methods are added (see inset). The black line in panel f corresponds to the estimation of Nt, c obtained comparing the inclination of the PIL with respect to the direction of the AR bipole. Black lines in panels g and h correspond to the AR barycenter.

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