Daily Sunspot Evaluation
Observation Sheet Friday, 9 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)
- 7
- Number of spots (f)
- 46
- Relative number (R)
- 116
- Observer
- WG
- Reading
- all checks consistent
- File
- 19551209.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | C – 13 | 0.5 | 36 | |
| 2 | B – 7 | 0.57 | 152 | |
| 3 | C – 4 | 0.3 | 202 | |
| 4 | A – 1 | 0.46 | 234 | |
| 5 | B – 2 | 0.41 | 236 | |
| 6 | J – 1 | 0.93 | 255 | |
| 7 | C – 18 | 0.9 | 308 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.