Daily Sunspot Evaluation
Observation Sheet Tuesday, 22 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)
- 13
- Number of spots (f)
- 137
- Relative number (R)
- 267
- Observer
- AK
- Reading
- all checks consistent
- File
- 19571022.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 9 | 15 | 0 | ||||
| 2 | D – 17 | 24 | 19E | ||||
| 3 | E – 21 | 22 | 45E | ||||
| 4 | B – 5 | 15 | 34E | ||||
| 5 | C – 8 | 14 | 50E | ||||
| 6 | B – 3 | 14 | 32E | ||||
| 7 | C – 7 | -12 | 70E | ||||
| 8 | D – 21 | -23 | 50E | ||||
| 9 | A – 2 | -24 | 10E | ||||
| 10 | B – 2 | -16 | 26W | ||||
| 11 | F – 20 | -25 | 57W | ||||
| 12 | D – 17 | 26 | 60W | ||||
| 13 | B – 5 | 25 | 5W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.