The green line radiant flux (top) and its AoLP (bottom) from Figure 3 are shown in green. We took off the error bars for the sake of clarity. In black, the full line represents (top) the total height integrated current deduced from the magnetometer chain and (bottom) its apparent angle projected on the polarimeter. It is noticeable that the scales are the same for the AoLP and the apparent current angle. The red dashed line represents the apparent angle of the magnetic field at 110 km (which is 195°). For the sake of clarity, only AoLPs corresponding to DoLPs larger than 0.15% has been plotted.