Daily Sunspot Evaluation
Observation Sheet Tuesday, 16 December 1980
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)
- 10
- Number of spots (f)
- 65
- Relative number (R)
- 165
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19801216.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKI – 8 | 13 | 46W | 48 | 47W | 10 | |
| 2 | EKC – 18 | 7 | 22E | 340 | 19E | 10.5 | |
| 3 | EAC – 18 | 15 | 28E | 334 | 25E | 16 | |
| 4 | HKX – 4 | 7 | 41E | 321 | 38E | 4 | |
| 5 | ? – 1 | 4 | 82E | 280 | 79E | ||
| 6 | HAX – 1 | -11 | 76W | 78 | 79W | 1.5 | |
| 7 | AXX – 1 | -17 | 45W | 47 | 48W | ||
| 8 | CAI – 7 | -16 | 11E | 351 | 08E | 3.5 | |
| 9 | DAO – 5 | -9 | 33E | 329 | 30E | 8 | |
| 10 | HAX – 2 | -15 | 66E | 296 | 63E | 2 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.