Daily Sunspot Evaluation
Observation Sheet Sunday, 11 August 1957
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)
- 46
- Relative number (R)
- 126
- Observer
- YÖ
- Reading
- all checks consistent
- File
- 19570811.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 15 | 18 | 23E | ||||
| 2 | ? – 1 | 22 | 87E | ||||
| 3 | C – 6 | 13 | 35E | ||||
| 4 | C – 5 | -10 | 48E | ||||
| 5 | A – 1 | -18 | 37E | ||||
| 6 | B – 13 | -13 | 5W | ||||
| 7 | B – 2 | -19 | 19W | ||||
| 8 | J – 3 | 8 | 62W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.