Daily Sunspot Evaluation
Observation Sheet Friday, 9 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)
- 9
- Number of spots (f)
- 38
- Relative number (R)
- 128
- Observer
- FY
- Reading
- all checks consistent
- File
- 19570809.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 16 | 48E | ||||
| 2 | H – 4 | 12 | 62E | ||||
| 3 | ? – 1 | -10 | 76E | ||||
| 4 | B – 3 | -14 | 26E | ||||
| 5 | A – 3 | -35 | 34E | ||||
| 6 | C – 6 | -22 | 10E | ||||
| 7 | C – 4 | 9 | 33W | ||||
| 8 | B – 4 | 14 | 52W | ||||
| 9 | E – 12 | 26 | 64W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.