Daily Sunspot Evaluation
Observation Sheet Wednesday, 25 February 1970
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)
- 68
- Relative number (R)
- 138
- Observer
- EH
- Reading
- all checks consistent
- File
- 19700225.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 30 | 13 | 24E | 233 | |||
| 2 | A – 2 | 24 | 38E | 219 | |||
| 3 | A – 3 | 25 | 47E | 210 | |||
| 4 | G – 3 | -12 | 45W | 302 | |||
| 5 | G – 16 | -7 | 10W | 267 | |||
| 6 | D – 5 | 24 | 29W | 286 | |||
| 7 | G – 9 | 18 | 04W | 261 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.