Daily Sunspot Evaluation
Observation Sheet Friday, 25 July 1958
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)
- 12
- Number of spots (f)
- 129
- Relative number (R)
- 249
- Observer
- FY
- Reading
- all checks consistent
- File
- 19580725.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 18 | 18 | 8E | ||||
| 2 | A – 2 | 25 | 20E | ||||
| 3 | J – 1 | 16 | 62E | ||||
| 4 | J – 3 | 4 | 81E | ||||
| 5 | J – 1 | 5 | 71E | ||||
| 6 | A – 2 | 3 | 22E | ||||
| 7 | J – 3 | -4 | 7E | ||||
| 8 | F – 83 | -18 | 21E | ||||
| 9 | H – 2 | -18 | 3E | ||||
| 10 | A – 3 | -14 | 29W | ||||
| 11 | C – 3 | -13 | 39W | ||||
| 12 | B – 8 | 26 | 55W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.