Daily Sunspot Evaluation
Observation Sheet Friday, 1 December 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)
- 4
- Number of spots (f)
- 21
- Relative number (R)
- 61
- Observer
- BG
- Reading
- all checks consistent
- File
- 19611201.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 12 | 45E | ||||
| 2 | A – 4 | 13 | 23E | ||||
| 3 | B – 4 | 6 | 17W | ||||
| 4 | D – 11 | 9 | 9W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.