Daily Sunspot Evaluation
Observation Sheet Tuesday, 19 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)
- 11
- Number of spots (f)
- 91
- Relative number (R)
- 201
- Observer
- AK
- Reading
- all checks consistent
- File
- 19580819.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 4 | 9 | 4E | ||||
| 2 | F – 36 | 18 | 34E | ||||
| 3 | C – 9 | 20 | 60E | ||||
| 4 | B – 6 | 6 | 32E | ||||
| 5 | C – 6 | -18 | 63E | ||||
| 6 | C – 12 | -14 | 32E | ||||
| 7 | B – 10 | -15 | 5W | ||||
| 8 | J – 2 | -12 | 11W | ||||
| 9 | A – 1 | -11 | 51W | ||||
| 10 | A – 1 | 47 | 60W | ||||
| 11 | C – 4 | 24 | 8W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.