Daily Sunspot Evaluation
Observation Sheet Wednesday, 24 July 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)
- 11
- Number of spots (f)
- 118
- Relative number (R)
- 228
- Observer
- YÖ
- Reading
- all checks consistent
- File
- 19570724.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 24 | 31 | 3W | ||||
| 2 | B – 3 | 19 | 33E | ||||
| 3 | F – 35 | 9 | 26E | ||||
| 4 | ? – 1 | -16 | 67E | ||||
| 5 | E – 27 | -24 | 19W | ||||
| 6 | A – 1 | -17 | 68W | ||||
| 7 | B – 10 | -9 | 62W | ||||
| 8 | E – 8 | 14 | 67W | ||||
| 9 | H – 1 | 23 | 45W | ||||
| 10 | J – 2 | 27 | 35W | ||||
| 11 | H – 6 | 30 | 23W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.