Daily Sunspot Evaluation
Observation Sheet Sunday, 11 December 1983
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)
- 52
- Relative number (R)
- 102
- Observer
- HG
- Reading
- all checks consistent
- File
- 19831211.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 11 | 12 | 46W | 60 | 48W | 6 | 333 |
| 2 | CAI – 7 | 2 | 43E | 333 | 39E | 6 | 334 |
| 3 | AXX – 1 | -9 | 48W | 62 | 50W | - | 335 |
| 4 | AXX – 7 | -12 | 08W | 22 | 10W | 3 | 336 |
| 5 | BXI – 26 | -14 | 01E | 13 | 01W | 75 | 332 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.