Daily Sunspot Evaluation
Observation Sheet Monday, 13 October 1958
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)
- 10
- Number of spots (f)
- 76
- Relative number (R)
- 176
- Observer
- AB
- Reading
- all checks consistent
- File
- 19581013.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | 22 | 5E | ||||
| 2 | G – 4 | 25 | 52E | ||||
| 3 | A – 2 | 12 | 58E | ||||
| 4 | C – 7 | -18 | 52E | ||||
| 5 | D – 5 | -14 | 41E | ||||
| 6 | F – 28 | -30 | 54E | ||||
| 7 | B – 9 | -10 | 11E | ||||
| 8 | A – 3 | 13 | 56W | ||||
| 9 | A – 7 | 17 | 48W | ||||
| 10 | C – 9 | 13 | 36W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.