Daily Sunspot Evaluation
Observation Sheet Tuesday, 8 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)
- 15
- Number of spots (f)
- 160
- Relative number (R)
- 310
- Observer
- GT
- Reading
- counts consistent, some coordinates doubtful
- File
- 19811208.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 2 | 20 | 25W | 354 | 28W | 0.75 | |
| 2 | DAI – 20 | 4 | 25W | 354 | 28W | 7 | |
| 3 | EKC – 23 | 18 | 06E | 323 | 03E | 12 | |
| 4 | EKC – 32 | 8 | 06E | 323 | 03E | 15 | 21 |
| 5 | CSO – 4 | 13 | 22E | 307 | 19E | 5.5 | |
| 6 | DSI – 18 | 6 | 26E | 303 | 23E | 11.5 | |
| 7 | DAO – 10 | 10 | 44E | 285 | 41E | 7.5 | |
| 8 | HAX – 2 | 17 | 48E | 281 | 45E | 3.5 | |
| 9 | DAO – 5 | -13 | 66W | 35 | 69W | 8.5 | |
| 10 | HAX – 4 | -18 | 01W | 330 | 04W | 2.5 | |
| 11 | CAI – 16 | -20 | 12E | 317 | 09E | 5 | |
| 12 | HAX – 4 | -15 | 20E | 309 | 17E | 3 | |
| 13 | DKC – 12 | -16 | 26E | 273 ⚠ | 52E | 8.0 | |
| 14 | CAO – 2 | -21 | 65E | 264 | 62E | 7 | |
| 15 | DKC – 6 | -8 | 73E | 256 | 70E | 9 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.