LSD Stokes I (first panel), Q (second panel), U (third panel) and V (fourth panel) profiles of HD 24712. Rotational phases calculated according to our improved ephemeris (see Sect. 7) are indicated in the first panel. Relative to Stokes I, the vertical scale for the Stokes Q and U profiles has been expanded by a factor of 36. The scale for the Stokes V profiles has been expanded by a factor of 6. The error bars are on the order of the thickness of the lines, therefore they are not shown on the plots. The red lines represent the LSD profiles of REEs while the black lines show the LSD profiles of Fe-peak elements. All profiles were corrected for the mean radial velocity of the star.