2814
2815
2813
8686
- Area = 8
- Zurich = D
- Penumbra = small symmetric (s) north to south diameter < 2.5
- Leading = 4
- NN = 13
8787
- Area = 10
- Zurich = D
- Penumbra = small symmetric (s) north to south diameter < 2.5
- Leading = 5
- NN = 10
8888
- Area = 1
- Zurich = A
- Penumbra = no penumbra (Zurich class A or B)
- Leading =
- NN = 1
8989
- Area = 2
- Zurich = H
- Penumbra = small symmetric (s) north to south diameter < 2.5
- Leading =
- NN = 1
Catania sunspot groups
2021-04-20 07:30:00
NOAA AR/sunspot
NOAA Halpha plage
NOAA expected region
2021-04-20 00:30:00
PROBA2/SWAP 17.4nm
2021-04-20T09:35:40.702