Daily Sunspot Evaluation
Observation Sheet Friday, 25 October 1991
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)
- 8
- Number of spots (f)
- 100
- Relative number (R)
- 180
- Observer
- YK
- Reading
- all checks consistent
- File
- 19911025.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 12 | 10 | 18W | 243 | 19W | 7 | 591 |
| 2 | AX – 6 | 19 | 27E | 198 | 26E | 3.5 | 592 |
| 3 | AX – 2 | 12 | 35E | 190 | 34E | 2.5 | 594 |
| 4 | CAI – 11 | 17 | 68E | 157 | 67E | 15 | 595 |
| 5 | AX – 3 | -13 | 74W | 299 | 75W | 3.5 | 586 |
| 6 | FKC – 44 | -11 | 40E | 185 | 39E | 17.5 | 593 |
| 7 | FKC – 21 | -20 | 44E | 181 | 43E | 13 | 596 |
| 8 | HA – 1 | -9 | 56E | 169 | 55E | 1 | 597 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.