Daily Sunspot Evaluation
Observation Sheet Sunday, 9 August 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)
- 18
- Relative number (R)
- 38
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19870809.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 2 | 6 | 52W | 59 | 55W | -61 | 53 |
| 2 | DXO – 16 | -25 | 39W | 46 | 42W | 10.560 | 52 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.