Daily Sunspot Evaluation
Observation Sheet Friday, 6 August 1971
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)
- 15
- Relative number (R)
- 45
- Observer
- MA
- Reading
- all checks consistent
- File
- 19710806.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 3 | -9 | 43E | 98 | |||
| 2 | C – 11 | -12 | 51E | 90 | |||
| 3 | A – 1 | 5 | 55W | 196 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.