Daily Sunspot Evaluation
Observation Sheet Thursday, 28 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)
- 17
- Number of spots (f)
- 96
- Relative number (R)
- 266
- Observer
- AB
- Reading
- all checks consistent
- File
- 19580828.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 30 | 51E | ||||
| 2 | C – 13 | 26 | 43E | ||||
| 3 | A – 5 | 26 | 59E | ||||
| 4 | ? – 1 | 18 | 85E | ||||
| 5 | D – 7 | 16 | 46E | ||||
| 6 | A – 1 | 9 | 42E | ||||
| 7 | E – 21 | -9 | 39E | ||||
| 8 | T – 1 | -19 | 70E | ||||
| 9 | H – 2 | -10 | 27E | ||||
| 10 | B – 6 | -10 | 7W | ||||
| 11 | C – 3 | -18 | 54W | ||||
| 12 | D – 8 | -17 | 69W | ||||
| 13 | A – 1 | 8 | 36W | ||||
| 14 | A – 2 | 8 | 28W | ||||
| 15 | T – 1 | 10 | 18W | ||||
| 16 | F – 21 | 20 | 74W | ||||
| 17 | A – 2 | 11 | 3W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.