Daily Sunspot Evaluation
Observation Sheet Friday, 23 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)
- 45
- Relative number (R)
- 105
- Observer
- FY
- Reading
- all checks consistent
- File
- 19570823.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | -12 | 33E | ||||
| 2 | C – 5 | -23 | 54E | ||||
| 3 | A – 1 | -27 | 40W | ||||
| 4 | B – 2 | -22 | 54W | ||||
| 5 | J – 1 | 21 | 74W | ||||
| 6 | E – 34 | 17 | 17W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.