\[fig:pro\_euviA\_0407\]. Only plume 1 is associated with a bright point. Plumes 0 and 3 were rooted in the brighter part of the coronal hole, but not on a bright point. Considering the evolution of polar plumes [@Wang:1998; @Raouafi:etal:2008], plumes 0 and 3 were observed perhaps in the decaying phase in which the bright points have already disappeared but the two plumes were still visible. For the big bright point close to the limb between plumes 3 and 4, we tried to find a plume pair but none of the possible peaks in the two plume radiance profiles (e.g., Figure \[fig:inten\_epi\_plot\]) produced a reasonable result with a footpoint close to this bright point and an orientation roughly along the diverging direction of the magnetic field around the pole.

For the data in June, Figures \[fig:side\_view\] and \[fig:top\_view\] reveal that of the five reconstructed plumes only plume 6 lies in front of the solar limbs as seen by *STEREO A* and *B*, the footpoints of the other four are hidden by the limb. By projecting the reconstructed plumes onto two simultaneous EUVI images (see Figure \[fig:proj\_euvi\_0601\]) and taking into account Figures \[fig:side\_view\] and \[fig:top\_view\], the spatial relationship between plumes and bright points 