Daily Sunspot Evaluation
Observation Sheet Tuesday, 9 September 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)
- 9
- Number of spots (f)
- 119
- Relative number (R)
- 209
- Observer
- AK
- Reading
- all checks consistent
- File
- 19580909.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 26 | 18 | 6E | ||||
| 2 | D – 28 | 22 | 46E | ||||
| 3 | A – 1 | 16 | 71E | ||||
| 4 | D – 4 | -11 | 66E | ||||
| 5 | A – 1 | -23 | 70E | ||||
| 6 | B – 3 | -7 | 4E | ||||
| 7 | E – 49 | -12 | 8W | ||||
| 8 | J – 1 | -14 | 22W | ||||
| 9 | B – 6 | 9 | 18W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.