Daily Sunspot Evaluation
Observation Sheet Friday, 25 December 1981
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)
- 22
- Relative number (R)
- 72
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19811225.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HKX – 1 | 12 | 10W | 115 | 13W | 3 | |
| 2 | DKI – 13 | 21 | 23E | 82 | 20E | 7 | |
| 3 | AKX – 3 | -25 | 02E | 103 | 01W | 1.5 | |
| 4 | HAX – 2 | -24 | 26E | 79 | 23E | 3 | |
| 5 | AKX – 3 | -7 | 34E | 71 | 31E | 2 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.