Daily Sunspot Evaluation
Observation Sheet Thursday, 24 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)
- 24
- Relative number (R)
- 74
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19811224.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HHX – 1 | 12 | 02E | 116 | 00 | 3 | |
| 2 | DAC – 12 | 22 | 36E | 82 | 34E | 9 | |
| 3 | CAO – 7 | -25 | 11E | 107 | 09E | 8 | |
| 4 | HKX – 2 | -25 | 37E | 79 | 37E | 3 | |
| 5 | AXX – 2 | -9 | 47E | 71 | 45E | 1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.