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Fig. 3


Sample of the dataset at 08:10:50 UT. a) Line core of Fe i 6302 Å; b) Hα blue wing at Δλ = −0.6 Å; c) Hα line core; and d) Ca ii 8542 Å line core. The orange box is the subfield chosen for the inversion of this time step. The smaller green boxes are the subfields for which the entire time series has been inverted. The numbered diamond symbols indicate the location of the selected Stokes profiles shown in Fig. 6. The green arrow points towards the north and the red arrow towards the disk centre. The temporal evolution can be found in a movie available online. In the middle of the time series, the field of view is shifted.

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