Daily Sunspot Evaluation
Observation Sheet Friday, 6 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)
- 8
- Number of spots (f)
- 39
- Relative number (R)
- 119
- Observer
- MH
- Reading
- all checks consistent
- File
- 19570906.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 11 | 11 | 60E | ||||
| 2 | C – 3 | -11 | 18E | ||||
| 3 | A – 1 | -18 | 23E | ||||
| 4 | E – 12 | -24 | 6E | ||||
| 5 | A – 1 | -14 | 30W | ||||
| 6 | ? – 1 | -30 | 80W | ||||
| 7 | ? – 4 | 16 | 82W | ||||
| 8 | ? – 6 | 25 | 71W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.