Daily Sunspot Evaluation
Observation Sheet Monday, 26 August 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)
- 17
- Number of spots (f)
- 80
- Relative number (R)
- 250
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19910826.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 3 | 57W | 357 | 60W | 2 | 449 |
| 2 | HA – 4 | 11 | 56W | 356 | 59W | 4.5 | 444 |
| 3 | HA – 3 | 16 | 43W | 343 | 46W | 1 | 456 |
| 4 | HA – 3 | 2 | 41W | 341 | 44W | 1 | 454 |
| 5 | CAO – 9 | 11 | 36W | 336 | 39W | 8 | 455 |
| 6 | BRO – 2 | 9 | 28W | 328 | 31W | 4.5 | 443 |
| 7 | AX – 2 | 10 | 21E | 279 | 18E | 0.5 | 476 |
| 8 | CAI – 8 | 15 | 23E | 277 | 20E | 7 | 468 |
| 9 | FKC – 18 | 23 | 63E | 237 | 60E | 19.5 | 469 |
| 10 | ? – 4 | -8 | 76W | 16 | 79W | 3 | 447 |
| 11 | AX – 1 | -3 | 66W | 6 | 69W | - | 448 |
| 12 | HA – 2 | -26 | 53W | 353 | 56W | 2 | 451 |
| 13 | HS – 2 | -9 | 36E | 264 | 33E | 3.5 | 467 |
| 14 | DAO – 8 | -12 | 47E | 253 | 44E | 7 | 472 |
| 15 | HA – 1 | -17 | 53E | 247 | 50E | 1.5 | 470 |
| 16 | AX – 4 | -7 | 53E | 247 | 50E | 2 | 471 |
| 17 | BXO – 8 | -12 | 57E | 241 | 56E | 5.5 | 475 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.