Daily Sunspot Evaluation
Observation Sheet Sunday, 8 September 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)
- 9
- Number of spots (f)
- 103
- Relative number (R)
- 193
- Observer
- ET
- Reading
- all checks consistent
- File
- 19570908.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 25 | 51E | ||||
| 2 | E – 48 | 11 | 34E | ||||
| 3 | ? – 1 | -21 | 77E | ||||
| 4 | A – 2 | -13 | 45E | ||||
| 5 | C – 13 | -12 | 30E | ||||
| 6 | ? – 1 | -43 | 68E | ||||
| 7 | E – 22 | -24 | 18W | ||||
| 8 | C – 7 | -11 | 9W | ||||
| 9 | B – 7 | 32 | 24W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.