Daily Sunspot Evaluation
Observation Sheet Wednesday, 19 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)
- 71
- Relative number (R)
- 171
- Observer
- AK
- Reading
- all checks consistent
- File
- 19561219.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 33 | 36E | ||||
| 2 | F – 37 | 13 | 22E | ||||
| 3 | ? – 2 | -16 | 80E | ||||
| 4 | A – 1 | -25 | 49E | ||||
| 5 | H – 13 | -26 | 25E | ||||
| 6 | A – 3 | -15 | 15W | ||||
| 7 | ? – 6 | -26 | 80W | ||||
| 8 | ? – 3 | 26 | 80W | ||||
| 9 | A – 3 | 21 | 45W | ||||
| 10 | A – 2 | 28 | 69W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.