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Fig. 6
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Polarization angle and the rotation measure properties of Sh 2–27. (a)χ; (b) σχ (colour-scale saturated to 0.15 rad, the maximum is 0.70 rad); 
(colour-scale saturated to 10 rad m−2, the maximum is 45 rad m−2). The orange and black ellipses show the area dealt with in the calculations.
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