Daily Sunspot Evaluation
Observation Sheet Friday, 11 January 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)
- 10
- Number of spots (f)
- 72
- Relative number (R)
- 172
- Observer
- ET
- Reading
- all checks consistent
- File
- 19570111.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 15 | 79E | ||||
| 2 | A – 1 | -27 | 9W | ||||
| 3 | C – 28 | -25 | 21W | ||||
| 4 | B – 13 | -20 | 30W | ||||
| 5 | C – 20 | -14 | 22W | ||||
| 6 | J – 1 | -15 | 31W | ||||
| 7 | J – 1 | -15 | 43W | ||||
| 8 | J – 1 | -20 | 58W | ||||
| 9 | A – 2 | 3 | 57W | ||||
| 10 | A – 4 | 13 | 53W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.