Daily Sunspot Evaluation
Observation Sheet Sunday, 23 December 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)
- 10
- Number of spots (f)
- 149
- Relative number (R)
- 249
- Observer
- KA
- Reading
- all checks consistent
- File
- 19561223.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | D – 10 | 13 | ||
| 2 | ? – 3 | 34 | ||
| 3 | E – 43 | 16 | ||
| 4 | D – 21 | 20 | ||
| 5 | A – 1 | -20 | ||
| 6 | F – 22 | -16 | ||
| 7 | B – 9 | -44 | ||
| 8 | J – 5 | -25 | ||
| 9 | E – 30 | 13 | ||
| 10 | B – 5 | 33 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.