Daily Sunspot Evaluation
Observation Sheet Monday, 12 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)
- 8
- Number of spots (f)
- 70
- Relative number (R)
- 150
- Observer
- KA
- Reading
- all checks consistent
- File
- 19551212.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | ? – 1 | 0.77 | 67 | |
| 2 | ? – 12 | 0.95 | 75 | |
| 3 | A – 1 | 0.85 | 77 | |
| 4 | C – 7 | 0.49 | 226 | |
| 5 | A – 1 | 0.72 | 268 | |
| 6 | ? – 1 | 0.99 | 307 | |
| 7 | A – 3 | 0.72 | 326 | |
| 8 | F – 44 | 0.68 | 336 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.