Daily Sunspot Evaluation
Observation Sheet Wednesday, 30 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)
- 7
- Number of spots (f)
- 84
- Relative number (R)
- 154
- Observer
- MA
- Reading
- all checks consistent
- File
- 19710630.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 16 | 42°E | 228 | |||
| 2 | D – 10 | 7 | 23°E | 247 | |||
| 3 | E – 15 | -7 | 33°E | 237 | |||
| 4 | E – 28 | -13 | 45°E | 225 | |||
| 5 | A – 1 | -10 | 39°E | 231 | |||
| 6 | ? – 1 | 9 | 73°W | 343 | |||
| 7 | E – 28 | 15 | 23°W | 293 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.