Daily Sunspot Evaluation
Observation Sheet Sunday, 27 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)
- 8
- Number of spots (f)
- 63
- Relative number (R)
- 143
- Observer
- SK
- Reading
- all checks consistent
- File
- 19710627.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 9 | 14 | 07E | 303 | |||
| 2 | E – 27 | 14 | 17E | 293 | |||
| 3 | ? – 1 | 16 | .82E | 228 | |||
| 4 | E – 5 | -8 | 73E | 237 | |||
| 5 | ? – 1 | -15 | 80E | 230 | |||
| 6 | B – 8 | -17 | 18W | 328 | |||
| 7 | D – 11 | -22 | 37W | 347 | |||
| 8 | A – 1 | 13 | 33W | 343 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.