Daily Sunspot Evaluation
Observation Sheet Thursday, 22 December 1960
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)
- 14
- Relative number (R)
- 44
- Observer
- BG
- Reading
- all checks consistent
- File
- 19601222.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 14 | 61W | ||||
| 2 | D – 5 | -21 | 25W | ||||
| 3 | C – 7 | 11 | 29W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.