Daily Sunspot Evaluation
Observation Sheet Friday, 11 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)
- 11
- Number of spots (f)
- 81
- Relative number (R)
- 191
- Observer
- MH
- Reading
- all checks consistent
- File
- 19571011.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 14 | 26 | 13E | ||||
| 2 | ? – 3 | 24 | 72E | ||||
| 3 | ? – 4 | 12 | 70E | ||||
| 4 | ? – 2 | -22 | 76E | ||||
| 5 | D – 9 | -17 | 52E | ||||
| 6 | B – 6 | -39 | 37W | ||||
| 7 | G – 4 | -15 | 32W | ||||
| 8 | ? – 1 | -17 | 71W | ||||
| 9 | E – 11 | 14 | 48W | ||||
| 10 | B – 8 | 41 | 64W | ||||
| 11 | E – 19 | 20 | 3W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.