Daily Sunspot Evaluation
Observation Sheet Monday, 28 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)
- 9
- Number of spots (f)
- 154
- Relative number (R)
- 244
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19911028.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 8 | 9 | 58W | 245 | 60W | 7 | 591 |
| 2 | BXO – 5 | 20 | 12W | 199 | 14W | 2.5 | 592 |
| 3 | EAI – 34 | 18 | 25E | 162 | 23E | 13.5 | 595 |
| 4 | BXO – 4 | -7 | 17W | 204 | 19W | 3 | 603 |
| 5 | FKC – 64 | -11 | 02E | 185 | 00 | 20 | 593 |
| 6 | FKC – 31 | -19 | 05E | 182 | 03E | 17 | 596 |
| 7 | HA – 2 | -8 | 16E | 171 | 14E | 1 | 607 |
| 8 | AX – 3 | -11 | 49E | 138 | 41E | 1 | 604 |
| 9 | ? – 3 | -6 | 75E | 112 | 73E | 6 | 605 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.