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Table 4

Sign of the Stokes v normalised parameter along the slit.

Dataset West oval exterior West oval interior Polar regions East oval interior East oval exterior

1 + + + + X
2 X + no clear tendency + X
3 X no clear tendency around 0
4 + + +
5 + around 0 +
6 X around 0 +
7 X around 0 X
8 around 0 around 0

Notes. Crosses indicate that no unambiguous polarisation was found.

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