Daily Sunspot Evaluation
Observation Sheet Tuesday, 25 June 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)
- 10
- Number of spots (f)
- 133
- Relative number (R)
- 233
- Observer
- ET
- Reading
- all checks consistent
- File
- 19570625.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 27 | 33E | ||||
| 2 | C – 11 | 11 | 65E | ||||
| 3 | F – 52 | -22 | 0 | ||||
| 4 | H – 11 | -41 | 42W | ||||
| 5 | E – 11 | -36 | 60W | ||||
| 6 | J – 1 | -16 | 75W | ||||
| 7 | H – 7 | 15 | 44W | ||||
| 8 | E – 30 | 21 | 30W | ||||
| 9 | B – 5 | 30 | 18W | ||||
| 10 | C – 4 | 23 | 12W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.