Daily Sunspot Evaluation
Observation Sheet Thursday, 20 September 1984
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 0
- Number of spots (f)
- 0
- Relative number (R)
- 0
- Observer
- HG
- Reading
- all checks consistent
- File
- 19840920.jpg
Sunspot groups
No sunspot groups.