Daily Sunspot Evaluation
Observation Sheet Wednesday, 9 September 1992
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)
- 4
- Number of spots (f)
- 36
- Relative number (R)
- 76
- Observer
- MB
- Reading
- counts consistent, some coordinates doubtful
- File
- 19920909.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 4 | 10 | 22E | 30 ⚠ | 20E | 0.3 | 322 |
| 2 | DKI – 20 | 14 | 65E | 258 | 63E | 0.7 | 320 |
| 3 | EKO – 6 | -10 | 74W | 40 | 74W | 14.5 | 319 |
| 4 | BAO – 6 | -11 | 28E | 295 | 26E | 0.4 | 324 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.