Daily Sunspot Evaluation
Observation Sheet Thursday, 9 February 1956
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)
- 24
- Relative number (R)
- 74
- Observer
- AK
- Reading
- all checks consistent
- File
- 19560209.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | C – 5 | 0.65 | 93 | |
| 2 | A – 2 | 0.67 | 104 | |
| 3 | A – 3 | 0.82 | 298 | |
| 4 | B – 4 | 0.73 | 312 | |
| 5 | B – 10 | 0.48 | 354 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.