Daily Sunspot Evaluation
Observation Sheet Saturday, 25 May 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)
- 7
- Number of spots (f)
- 53
- Relative number (R)
- 123
- Observer
- WG
- Reading
- all checks consistent
- File
- 19570525.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 6 | 22 | 35E | ||||
| 2 | J – 1 | -22 | 57E | ||||
| 3 | C – 4 | -11 | 12E | ||||
| 4 | J – 2 | -8 | 13W | ||||
| 5 | D – 12 | -17 | 40W | ||||
| 6 | D – 6 | 9 | 60W | ||||
| 7 | D – 22 | 18 | 7W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.