A curved filament
was seen surrounding an active region in the northern hemisphere on Nov 23 and a long bow shaped filament was in the SW quadrant aligned north-south with two shorter filaments to the east.
A long curved filament
aligned north-south preceded both AR1401 and 1402 on Jan 16 which was still present but thickened, on Jan 19.
A large curved filament was seen in the NE quadrant on Nov 7 and by the next day, a total of six filaments were seen mostly in the NE and SE quadrants.
On Nov 19 an extensive filament was reported in the SW quadrant as well as a quite long curved filament on the NE limb.
A long dark curved filament
was observed to NNE of the disk centre, halfway to the limb on May 28 and a patch of bright plage near the ENE limb.