Daily Sunspot Evaluation
Observation Sheet Thursday, 22 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)
- 6
- Number of spots (f)
- 36
- Relative number (R)
- 96
- Observer
- MH
- Reading
- all checks consistent
- File
- 19570822.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | -14 | 44E | ||||
| 2 | ? – 4 | -25 | 65E | ||||
| 3 | J – 2 | -21 | 40W | ||||
| 4 | A – 3 | -20 | 46W | ||||
| 5 | J – 1 | 23 | 60W | ||||
| 6 | E – 24 | 17 | 5W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.