Daily Sunspot Evaluation
Observation Sheet Sunday, 25 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)
- 9
- Number of spots (f)
- 22
- Relative number (R)
- 112
- Observer
- ET
- Reading
- all checks consistent
- File
- 19601225.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 34 | 8E | ||||
| 2 | G – 2 | 14 | 22E | ||||
| 3 | A – 3 | 10 | 14E | ||||
| 4 | J – 2 | -9 | 68E | ||||
| 5 | G – 2 | -21 | 63W | ||||
| 6 | A – 1 | 10 | 70W | ||||
| 7 | A – 2 | 6 | 24W | ||||
| 8 | A – 4 | 8 | 33W | ||||
| 9 | A – 3 | 17 | 4W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.