Daily Sunspot Evaluation
Observation Sheet Thursday, 10 August 1961
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)
- 5
- Number of spots (f)
- 28
- Relative number (R)
- 78
- Observer
- KA
- Reading
- all checks consistent
- File
- 19610810.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 13 | 15 | 50E | ||||
| 2 | ? – 2 | 7 | 98E | ||||
| 3 | ? – 2 | -2 | 78E | ||||
| 4 | A – 1 | -5 | 55E | ||||
| 5 | D – 10 | 16 | 19W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.