Daily Sunspot Evaluation
Observation Sheet Monday, 17 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)
- 11
- Number of spots (f)
- 126
- Relative number (R)
- 236
- Observer
- KA
- Reading
- all checks consistent
- File
- 19561217.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 34 | 65E | ||||
| 2 | E – 47 | 14 | 47E | ||||
| 3 | ? – 1 | -25 | 74E | ||||
| 4 | C – 9 | -24 | 50E | ||||
| 5 | A – 2 | -16 | 2W | ||||
| 6 | E – 38 | -25 | 55W | ||||
| 7 | A – 1 | -16 | 67W | ||||
| 8 | A – 2 | 23 | 65W | ||||
| 9 | J – 6 | 27 | 54W | ||||
| 10 | B – 10 | 29 | 45W | ||||
| 11 | B – 7 | 22 | 21W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.