Daily Sunspot Evaluation
Observation Sheet Thursday, 29 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)
- 8
- Number of spots (f)
- 100
- Relative number (R)
- 180
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19910829.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 10 | 77W | 337 | 80W | 2 | 455 |
| 2 | CAO – 5 | 15 | 18W | 278 | 21W | 8 | 458 |
| 3 | FKC – 43 | 24 | 24E | 236 | 21E | 18 | 469 |
| 4 | HS – 3 | -8 | 05W | 265 | 08W | 3.5 | 467 |
| 5 | CAI – 8 | -12 | 05E | 255 | 02E | 7 | 472 |
| 6 | HA – 2 | -16 | 10E | 250 | 07E | 1 | 470 |
| 7 | BRI – 29 | -9 | 16E | 244 | 13E | 9 | 475 |
| 8 | FAO – 9 | -20 | 57E | 203 | 54E | 20 | 477 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.