Daily Sunspot Evaluation
Observation Sheet Sunday, 9 June 1957
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)
- 11
- Number of spots (f)
- 51
- Relative number (R)
- 161
- Observer
- WG
- Reading
- all checks consistent
- File
- 19570609.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 3 | 22 | 27E | ||||
| 2 | F – 13 | 33 | 70E | ||||
| 3 | J – 1 | 19 | 40E | ||||
| 4 | A – 2 | 13 | 47E | ||||
| 5 | G – 10 | -17 | 11W | ||||
| 6 | G – 3 | -25 | 24W | ||||
| 7 | B – 11 | -31 | 27W | ||||
| 8 | ? – 2 | -24 | 63W | ||||
| 9 | J – 1 | -16 | 67W | ||||
| 10 | ? – 1 | 12 | 78W | ||||
| 11 | G – 4 | 11 | 27W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.