Daily Sunspot Evaluation
Observation Sheet Friday, 30 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)
- 137
- Relative number (R)
- 217
- Observer
- HE
- Reading
- all checks consistent
- File
- 19910830.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 3 | 15 | 32°W | 278 | 35°W | 5.5 | 468 |
| 2 | FKI – 43 | 24 | 10°E | 236 | 07°E | 16.5 | 469 |
| 3 | BXI – 18 | 12 | 20°E | 226 | 17°E | 6.5 | 473 |
| 4 | HS – 1 | -9 | 20°W | 266 | 23°W | 1.5 | 467 |
| 5 | HA – 4 | -13 | 11°W | 257 | 14°W | 1.5 | 472 |
| 6 | HA – 3 | -16 | 04°W | 250 | 07°W | 1.5 | 470 |
| 7 | BRI – 47 | -8 | 02°E | 244 | 01°W | 7.5 | 475 |
| 8 | FKO – 18 | -20 | 43°E | 203 | 40°E | 23 | 477 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.