Daily Sunspot Evaluation
Observation Sheet Tuesday, 12 November 1957
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)
- 16
- Number of spots (f)
- 108
- Relative number (R)
- 268
- Observer
- AK
- Reading
- all checks consistent
- File
- 19571112.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 5 | 21 | 16E | ||||
| 2 | C – 9 | 7 | 24E | ||||
| 3 | ? – 4 | -6 | 76E | ||||
| 4 | H – 8 | -22 | 33E | ||||
| 5 | A – 5 | -18 | 26E | ||||
| 6 | E – 24 | -20 | 11E | ||||
| 7 | A – 2 | -9 | 5E | ||||
| 8 | A – 1 | -17 | 14W | ||||
| 9 | J – 1 | -31 | 27W | ||||
| 10 | ? – 4 | -18 | 77W | ||||
| 11 | A – 3 | -5 | 45W | ||||
| 12 | A – 2 | 29 | 57W | ||||
| 13 | A – 1 | 25 | 41W | ||||
| 14 | A – 2 | 21 | 24W | ||||
| 15 | B – 8 | 13 | 1W | ||||
| 16 | E – 29 | 19 | 1W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.