Daily Sunspot Evaluation
Observation Sheet Wednesday, 2 September 1987
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)
- 2
- Number of spots (f)
- 9
- Relative number (R)
- 29
- Observer
- FL
- Reading
- all checks consistent
- File
- 19870902.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKC – 8 | -22 | 67E | 344 | 63E | 13.32 | 69 |
| 2 | ARX – 1 | -25 | 46E | 5 | 42E | 0.574 | 65 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.