Daily Sunspot Evaluation
Observation Sheet Monday, 7 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)
- 14
- Relative number (R)
- 54
- Observer
- FA
- Reading
- all checks consistent
- File
- 19710607.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 4 | -3 | 04E | 211 | |||
| 2 | G – 5 | -6 | 17E | 198 | |||
| 3 | A – 2 | -15 | 04W | 219 | |||
| 4 | H – 3 | -1 | 05W | 220 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.