Daily Sunspot Evaluation
Observation Sheet Sunday, 11 May 1980
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)
- 10
- Number of spots (f)
- 78
- Relative number (R)
- 178
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19800511.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 4 | 12 | 39W | 53 | 42W | 9 | |
| 2 | AXX – 1 | 21 | 33W | 47 | 36W | ||
| 3 | DKO – 4 | -20 | 65W | 79 | 68W | 12 | |
| 4 | BXI – 4 | -16 | 58W | 72 | 61W | 6.5 | |
| 5 | AXX – 2 | -12 | 31W | 45 | 34W | 2.5 | |
| 6 | HXX – 1 | -21 | 17W | 31 | 20W | 9.5 | |
| 7 | AXX – 1 | -32 | 17E | 357 | 14E | ||
| 8 | FKC – 48 | -15 | 29E | 345 | 26E | 13 | |
| 9 | DKO – 7 | -21 | 52E | 322 | 49E | 9.5 | |
| 10 | DAO – 6 | -21 | 68E | 306 | 65E | 5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.