Daily Sunspot Evaluation
Observation Sheet Sunday, 16 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)
- 141
- Relative number (R)
- 251
- Observer
- KA
- Reading
- all checks consistent
- File
- 19570616.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 7 | 25 | 71E | ||||
| 2 | ? – 9 | 18 | 80E | ||||
| 3 | A – 4 | -14 | 62E | ||||
| 4 | G – 13 | -15 | 42E | ||||
| 5 | B – 4 | -21 | 36E | ||||
| 6 | A – 8 | -16 | 21E | ||||
| 7 | E – 24 | -37 | 60E | ||||
| 8 | A – 6 | -10 | 35W | ||||
| 9 | J – 4 | 12 | 49W | ||||
| 10 | A – 2 | 24 | 41W | ||||
| 11 | E – 60 | 33 | 20W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.