Daily Sunspot Evaluation
Observation Sheet Friday, 25 October 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)
- 15
- Number of spots (f)
- 146
- Relative number (R)
- 296
- Observer
- ET
- Reading
- all checks consistent
- File
- 19571025.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 8 | 21 | 5E | ||||
| 2 | C – 27 | 13 | 6E | ||||
| 3 | C – 4 | 15 | 32E | ||||
| 4 | J – 2 | 13 | 44E | ||||
| 5 | G – 4 | 26 | 65E | ||||
| 6 | J – 3 | 14 | 69E | ||||
| 7 | A – 2 | 9 | 50E | ||||
| 8 | J – 2 | -15 | 79E | ||||
| 9 | C – 18 | -12 | 30E | ||||
| 10 | C – 30 | -22 | 7E | ||||
| 11 | A – 8 | -23 | 33W | ||||
| 12 | J – 2 | 16 | 40W | ||||
| 13 | C – 15 | 26 | 45W | ||||
| 14 | D – 10 | 24 | 21W | ||||
| 15 | B – 11 | 13 | 7W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.