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Fig. 4.


Polarization signals of Stokes Q/I, U/I and V/I in the Sr I 4607.3 Å line versus normalized Stokes I continuum intensity. Left panels: polarization found in the continuum, right panels: polarization signals from the line core. Inserts display the function describing the linear fit, with x as the normalized continuum intensity and y the polarization percentage.

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