Daily Sunspot Evaluation
Observation Sheet Wednesday, 9 August 1972
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)
- 4
- Number of spots (f)
- 28
- Relative number (R)
- 68
- Observer
- SK
- Reading
- all checks consistent
- File
- 19720809.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 8 | -8 | 72W | 22 | |||
| 2 | B – 3 | 9 | 47W | 357 | |||
| 3 | H – 12 | 14 | 60W | 10 | |||
| 4 | A – 5 | 16 | 31W | 341 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.