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Fig. 4.


Overplotted mean line profiles constructed with the LSD method using various line masks. From top to bottom panels: LSD Stokes V profile, diagnostic null profile, and LSD Stokes I profile for the observations, that are off-set for increased visibility. Differences in the line depth of the LSD Stokes I profile, the strength and shape of the Zeeman signature in the LSD Stokes V profile, and the shape of the LPVs in the LSD Stokes I profile are clearly visible. We indicate the integration limits for the computation of the longitudinal magnetic field and the FAP determination by the red dashed lines for each observation. For the Balmer lines, only the cores of the LSD Stokes I profiles were used and shifted upwards to unity, following the technique of Landstreet et al. (2015, see text).

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