Daily Sunspot Evaluation
Observation Sheet Friday, 30 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)
- 41
- Relative number (R)
- 121
- Observer
- WG
- Reading
- all checks consistent
- File
- 19551230.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | A – 1 | 0.48 | 22 | |
| 2 | C – 15 | 0.5 | 35 | |
| 3 | B – 3 | 0.49 | 49 | |
| 4 | C – 8 | 0.88 | 120 | |
| 5 | A – 1 | 0.52 | 140 | |
| 6 | ? – 1 | 0.98 | 255 | |
| 7 | A – 1 | 0.86 | 305 | |
| 8 | D – 11 | 0.57 | 317 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.