Daily Sunspot Evaluation
Observation Sheet Wednesday, 8 September 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)
- 4
- Number of spots (f)
- 38
- Relative number (R)
- 78
- Observer
- MA
- Reading
- all checks consistent
- File
- 19710908.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | 2 | 15E | 50 | |||
| 2 | E – 19 | -8 | 58W | 123 | |||
| 3 | E – 15 | 2 | 66W | 131 | |||
| 4 | J – 2 | 17 | 31W | 96 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.