7
7
  • Area = 1
  • Zurich = B
  • Penumbra = no penumbra (Zurich class A or B)
  • Leading = 1
  • NN = 2

Catania sunspot groups
2019-02-19 07:06:00
NOAA AR/sunspot
NOAA Halpha plage
NOAA expected region
No observation
PROBA2/SWAP 17.4nm
2019-02-19T23:11:17.282