Daily Sunspot Evaluation
Observation Sheet Friday, 25 July 1975
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)
- 3
- Number of spots (f)
- 14
- Relative number (R)
- 44
- Observer
- GA
- Reading
- all checks consistent
- File
- 19750725.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 12 | 9 | 13E | 83 | 10E | ||
| 2 | D – 1 | 7 | 28E | 68 | 25E | ||
| 3 | D – 1 | -4 | 73W | 169 | 96W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.