Daily Sunspot Evaluation
Observation Sheet Thursday, 25 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)
- 13
- Number of spots (f)
- 85
- Relative number (R)
- 215
- Observer
- TÖ
- Reading
- counts consistent, some coordinates doubtful
- File
- 19800925.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CSO – 3 | 11 | 47W | 50 | 50W | 7.5 | |
| 2 | DAO – 11 | 5 | 45W | 48 | 48W | 7.5 | |
| 3 | EKC – 30 | 19 | 42W | 45 | 45W | 12.5 | |
| 4 | AXK – 2 | 9 | 03W | 6 | 06W | - | |
| 5 | CEO – 6 | 18 | 32E | 331 | 29E | 7.5 | |
| 6 | HAK – 2 | 13 | 60E | 303 | 57E | 2.5 | |
| 7 | FEC – 16 | -33 | 40W | 43 | 43W | 17 | |
| 8 | HAI – 2 | -19 | 02E | 1 | 01W | 1 | |
| 9 | HSX – 1 | -27 | 07E | 356 | 04E | 1 | |
| 10 | AXX – 1 | -9 | 13E | 350 | 10E | - | |
| 11 | CAI – 6 | -31 | 41E | 322 | 38E | 6.5 | |
| 12 | AXX – 2 | -5 | 55E | 308 | 52E | 1 | |
| 13 | HSX – 3 | -17 | 64E | 279 ⚠ | 61E | 7 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.