Daily Sunspot Evaluation
Observation Sheet Wednesday, 12 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)
- 3
- Number of spots (f)
- 61
- Relative number (R)
- 91
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19700812.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 6 | -7 | 48W | 248 | |||
| 2 | E – 32 | 18 | 38W | 238 | |||
| 3 | E – 23 | 21 | 02W | 202 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.