Daily Sunspot Evaluation
Observation Sheet Wednesday, 16 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)
- 4
- Number of spots (f)
- 15
- Relative number (R)
- 55
- Observer
- MA
- Reading
- all checks consistent
- File
- 19710616.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | -8 | 60E | 36 | |||
| 2 | A – 1 | -5 | 20E | 76 | |||
| 3 | A – 5 | -13 | 19E | 79 | |||
| 4 | B – 8 | -14 | 27W | 123 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.