Daily Sunspot Evaluation
Observation Sheet Saturday, 11 January 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)
- 18
- Number of spots (f)
- 120
- Relative number (R)
- 300
- Observer
- WG
- Reading
- all checks consistent
- File
- 19580111.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 3 | 26 | 16E | ||||
| 2 | B – 17 | 25 | 31E | ||||
| 3 | J – 1 | 29 | 46E | ||||
| 4 | A – 1 | 13 | 46E | ||||
| 5 | J – 1 | 14 | 78E | ||||
| 6 | C – 10 | -6 | 65E | ||||
| 7 | J – 1 | -23 | 49E | ||||
| 8 | B – 8 | -20 | 26E | ||||
| 9 | E – 33 | -14 | 1E | ||||
| 10 | C – 11 | -28 | 14W | ||||
| 11 | B – 8 | -39 | 35W | ||||
| 12 | C – 9 | -17 | 14W | ||||
| 13 | A – 3 | -18 | 55W | ||||
| 14 | C – 4 | 10 | 58W | ||||
| 15 | B – 5 | 17 | 55W | ||||
| 16 | A – 2 | 26 | 27W | ||||
| 17 | A – 1 | 26 | 4W | ||||
| 18 | B – 2 | 12 | 3W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.