Daily Sunspot Evaluation
Observation Sheet Wednesday, 10 August 1966
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)
- 3
- Number of spots (f)
- 7
- Relative number (R)
- 37
- Observer
- SB
- Reading
- counts consistent, some coordinates doubtful
- File
- 19660810.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 4 | 15 | 13E | 56 | |||
| 2 | A – 2 | 11 | 26E | 43 | |||
| 3 | A – 1 | 4 | 3W | 12 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.