Daily Sunspot Evaluation
Observation Sheet Saturday, 9 August 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)
- 16
- Number of spots (f)
- 126
- Relative number (R)
- 286
- Observer
- AB
- Reading
- all checks consistent
- File
- 19580809.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | T – 1 | 17 | 30E | ||||
| 2 | C – 7 | -6 | 24E | ||||
| 3 | F – 38 | -14 | 42E | ||||
| 4 | E – 16 | -25 | 23E | ||||
| 5 | A – 1 | -18 | 8E | ||||
| 6 | H – 6 | -11 | 2W | ||||
| 7 | B – 5 | -21 | 27W | ||||
| 8 | D – 8 | -13 | 30W | ||||
| 9 | ? – 6 | -12 | 85W | ||||
| 10 | B – 3 | -6 | 74W | ||||
| 11 | D – 6 | 23 | 60W | ||||
| 12 | C – 4 | 22 | 72W | ||||
| 13 | H – 1 | 26 | 78W | ||||
| 14 | A – 2 | 20 | 33W | ||||
| 15 | F – 13 | 21 | 15W | ||||
| 16 | C – 9 | 40 | 40W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.