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Fig. 1.


Histograms of inversion results of noised theoretical polarization profiles. The introduced noise level is 1.5 × 10−3, in terms of polarization degree. The method used is a Milne-Eddington inversion, but including a magnetic filling factor α (see text). As a result, the inaccuracy can be estimated to be 20 G for the x and y components (left and middle plots), whereas it is 10 G for the z component (right plot). The Oz-axis lies along the line of sight. The assumed line is Fe I 6302.5 Å. These histograms were published (in spherical coordinates) in Fig. 5 of Bommier et al. (2007).

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