2847 2849
25
25
  • Area = 1
  • Zurich = B
  • Penumbra = no penumbra (Zurich class A or B)
  • Leading = 1
  • NN = 3
25
25
  • Area = 1
  • Zurich = B
  • Penumbra = no penumbra (Zurich class A or B)
  • Leading = 1
  • NN = 3

Catania sunspot groups
2021-07-29 08:30:00
NOAA AR/sunspot
NOAA Halpha plage
NOAA expected region
No observation
PROBA2/SWAP 17.4nm
2021-08-02T08:57:49.408