Fig. A.2
Upper row: comparison of the LSD Stokes I profiles of HD 104237 computed for the individual subexposures obtained with a time lapse of 2.2 min (left side) and differences between Stokes I profiles computed for the individual subexposures and the average Stokes I profile with standard deviation limits indicated by the dashed lines (right side). Lower row: Stokes V spectra calculated for the combination of pairs of two subexposures with the quarter-wave plate angles separated by 90 degrees, four pairs in all.
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