Daily Sunspot Evaluation
Observation Sheet Wednesday, 23 June 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)
- 6
- Number of spots (f)
- 37
- Relative number (R)
- 97
- Observer
- MA
- Reading
- all checks consistent
- File
- 19710623.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 14 | 10 | 21°E | 342 | |||
| 2 | A – 1 | 13 | 51°E | 312 | |||
| 3 | ? – 2 | 14 | 70°E | 293 | |||
| 4 | B – 8 | -3 | 10°E | 353 | |||
| 5 | B – 11 | -18 | 12°E | 351 | |||
| 6 | ? – 1 | -13 | 80°W | 83 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.