Daily Sunspot Evaluation
Observation Sheet Friday, 7 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)
- 10
- Number of spots (f)
- 72
- Relative number (R)
- 172
- Observer
- WG
- Reading
- all checks consistent
- File
- 19570607.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 7 | 17 | 2E | ||||
| 2 | G – 7 | 11 | 0 | ||||
| 3 | ? – 1 | 19 | 68E | ||||
| 4 | G – 21 | -18 | 16E | ||||
| 5 | G – 3 | -25 | 2E | ||||
| 6 | B – 3 | -24 | 34W | ||||
| 7 | G – 13 | -16 | 39W | ||||
| 8 | ? – 1 | -24 | 71W | ||||
| 9 | J – 2 | -17 | 66W | ||||
| 10 | G – 14 | 10 | 53W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.