Daily Sunspot Evaluation
Observation Sheet Sunday, 11 December 1955
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)
- 4
- Number of spots (f)
- 57
- Relative number (R)
- 97
- Observer
- AK
- Reading
- all checks consistent
- File
- 19551211.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | ? – 3 | 0.98 | 27 | |
| 2 | C – 8 | 0.4 | 200 | |
| 3 | A – 6 | 0.6 | 335 | |
| 4 | D – 40 | 0.49 | 353 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.