Daily Sunspot Evaluation
Observation Sheet Tuesday, 27 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)
- 11
- Number of spots (f)
- 57
- Relative number (R)
- 167
- Observer
- YÖ
- Reading
- all checks consistent
- File
- 19570827.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 13 | 12 | 25E | ||||
| 2 | F – 8 | 24 | 62E | ||||
| 3 | B – 5 | 17 | 69E | ||||
| 4 | J – 1 | 14 | 59E | ||||
| 5 | E – 10 | -30 | 47E | ||||
| 6 | G – 6 | -12 | 10E | ||||
| 7 | B – 3 | -25 | 3E | ||||
| 8 | J – 3 | -25 | 4W | ||||
| 9 | J – 3 | -15 | 23W | ||||
| 10 | ? – 1 | 15 | 76W | ||||
| 11 | B – 4 | 21 | 62W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.