Daily Sunspot Evaluation
Observation Sheet Wednesday, 23 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)
- 17
- Number of spots (f)
- 144
- Relative number (R)
- 314
- Observer
- MH
- Reading
- all checks consistent
- File
- 19571023.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 19 | 24 | 5E | ||||
| 2 | D – 19 | 22 | 32E | ||||
| 3 | C – 8 | 16 | 20E | ||||
| 4 | C – 19 | 13 | 34E | ||||
| 5 | ? – 2 | 14 | 58E | ||||
| 6 | ? – 2 | 11 | 75E | ||||
| 7 | C – 10 | -12 | 58E | ||||
| 8 | D – 16 | -25 | 36E | ||||
| 9 | B – 2 | -7 | 8E | ||||
| 10 | B – 2 | -13 | 7E | ||||
| 11 | B – 8 | -24 | 3W | ||||
| 12 | A – 2 | -16 | 41W | ||||
| 13 | F – 11 | -25 | 71W | ||||
| 14 | A – 1 | 7 | 60W | ||||
| 15 | D – 7 | 26 | 74W | ||||
| 16 | C – 4 | 16 | 14W | ||||
| 17 | B – 12 | 25 | 19W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.