Daily Sunspot Evaluation
Observation Sheet Tuesday, 25 August 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)
- 10
- Number of spots (f)
- 46
- Relative number (R)
- 146
- Observer
- FA
- Reading
- all checks consistent
- File
- 19700825.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 3 | 12 | 34E | 354 | |||
| 2 | A – 1 | 14 | 62E | 326 | |||
| 3 | D – 4 | -7 | 50E | 338 | |||
| 4 | D – 6 | -11 | 50E | 338 | |||
| 5 | J – 1 | 5 | 02W | 30 | |||
| 6 | D – 6 | -6 | 56W | 84 | |||
| 7 | H – 3 | 7 | 67W | 95 | |||
| 8 | D – 8 | 21 | 46W | 74 | |||
| 9 | J – 1 | 13 | 08W | 36 | |||
| 10 | D – 13 | 19 | 14W | 42 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.