Daily Sunspot Evaluation
Observation Sheet Wednesday, 16 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)
- 14
- Number of spots (f)
- 105
- Relative number (R)
- 245
- Observer
- MH
- Reading
- all checks consistent
- File
- 19571016.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 23 | 0 | ||||
| 2 | C – 4 | 9 | 1E | ||||
| 3 | C – 13 | 27 | 16E | ||||
| 4 | A – 4 | 11 | 31E | ||||
| 5 | A – 1 | 7 | 21E | ||||
| 6 | A – 1 | -16 | 52E | ||||
| 7 | ? – 1 | -23 | 73E | ||||
| 8 | F – 48 | -24 | 19E | ||||
| 9 | E – 20 | -17 | 15W | ||||
| 10 | A – 1 | -26 | 54W | ||||
| 11 | H – 3 | 21 | 67W | ||||
| 12 | H – 2 | 26 | 52W | ||||
| 13 | A – 2 | 25 | 25W | ||||
| 14 | A – 2 | 32 | 6W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.