Daily Sunspot Evaluation
Observation Sheet Tuesday, 23 September 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)
- 11
- Number of spots (f)
- 105
- Relative number (R)
- 215
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19800923.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 7 | 6 | 18W | 47 | 21W | 5 | |
| 2 | EKC – 47 | 18 | 15W | 44 | 18W | 12 | |
| 3 | DAI – 16 | 11 | 15W | 44 | 18W | 8 | |
| 4 | AXX – 3 | 9 | 24E | 5 | 21E | 1 | |
| 5 | CAI – 4 | 18 | 57E | 332 | 54E | 3.5 | |
| 6 | HAX – 1 | 13 | 85E | 304 | 82E | ||
| 7 | AXX – 1 | -10 | 53W | 82 | 54W | ||
| 8 | FKC – 23 | -83 | 15W | 44 | 18W | 15.5 | |
| 9 | AXX – 1 | -14 | 29E | 0 | 16E | 0.5 | |
| 10 | HAX – 1 | -27 | 32E | 357 | 29E | 15 | |
| 11 | AXX – 1 | -5 | 40E | 349 | 37E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.