Daily Sunspot Evaluation
Observation Sheet Thursday, 11 December 1958
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)
- 14
- Number of spots (f)
- 159
- Relative number (R)
- 299
- Observer
- AK
- Reading
- all checks consistent
- File
- 19581211.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 6 | 9 | 14E | ||||
| 2 | ? – 2 | 31 | 78E | ||||
| 3 | C – 9 | 10 | 51E | ||||
| 4 | F – 87 | -4 | 11E | ||||
| 5 | B – 3 | -13 | 27E | ||||
| 6 | E – 17 | -18 | 27E | ||||
| 7 | C – 4 | -30 | 4E | ||||
| 8 | C – 5 | -2 | 2W | ||||
| 9 | C – 6 | -13 | 26W | ||||
| 10 | H – 2 | -20 | 65W | ||||
| 11 | J – 2 | -8 | 23W | ||||
| 12 | ? – 3 | -7 | 80W | ||||
| 13 | C – 11 | 14 | 21W | ||||
| 14 | C – 2 | 28 | 0 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.