Daily Sunspot Evaluation
Observation Sheet Wednesday, 26 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)
- 87
- Relative number (R)
- 197
- Observer
- FY
- Reading
- all checks consistent
- File
- 19570626.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 13 | 11 | 52E | ||||
| 2 | ? – 1 | -11 | 79E | ||||
| 3 | A – 2 | -15 | 68E | ||||
| 4 | B – 6 | -22 | 22E | ||||
| 5 | B – 3 | -14 | 9W | ||||
| 6 | F – 41 | -22 | 12W | ||||
| 7 | H – 4 | -41 | 53W | ||||
| 8 | C – 4 | -36 | 74W | ||||
| 9 | H – 3 | 15 | 57W | ||||
| 10 | H – 9 | 21 | 43W | ||||
| 11 | J – 1 | 22 | 26W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.