Daily Sunspot Evaluation
Observation Sheet Wednesday, 10 July 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)
- 9
- Number of spots (f)
- 37
- Relative number (R)
- 127
- Observer
- FY
- Reading
- all checks consistent
- File
- 19570710.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 33 | 25E | ||||
| 2 | J – 1 | 8 | 55E | ||||
| 3 | B – 5 | -13 | 40E | ||||
| 4 | D – 10 | -11 | 0 | ||||
| 5 | E – 7 | -30 | 64W | ||||
| 6 | C – 2 | 12 | 76W | ||||
| 7 | A – 2 | 13 | 60W | ||||
| 8 | J – 4 | 12 | 34W | ||||
| 9 | C – 4 | 25 | 64W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.