Daily Sunspot Evaluation
Observation Sheet Friday, 9 June 1961
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)
- 5
- Number of spots (f)
- 25
- Relative number (R)
- 75
- Observer
- ET
- Reading
- all checks consistent
- File
- 19610609.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 3 | 88E | ||||
| 2 | B – 5 | -6 | 31W | ||||
| 3 | H – 5 | -3 | 41W | ||||
| 4 | D – 11 | 1 | 18W | ||||
| 5 | A – 2 | 10 | 10W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.