Daily Sunspot Evaluation
Observation Sheet Wednesday, 20 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)
- 8
- Number of spots (f)
- 58
- Relative number (R)
- 138
- Observer
- MH
- Reading
- all checks consistent
- File
- 19580820.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 30 | 18 | 19E | ||||
| 2 | C – 5 | 21 | 50E | ||||
| 3 | ? – 1 | 18 | 81E | ||||
| 4 | C – 6 | -18 | 50E | ||||
| 5 | A – 1 | -20 | 42E | ||||
| 6 | C – 11 | -14 | 19E | ||||
| 7 | J – 1 | -11 | 26W | ||||
| 8 | A – 3 | 23 | 22W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.