Daily Sunspot Evaluation
Observation Sheet Saturday, 25 July 1992
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)
- 10
- Relative number (R)
- 40
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19920725.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CRO – 4 | 16 | 44W | 255 | 47W | 4 | 284 |
| 2 | HR – 2 | 20 | 35W | 246 | 38W | 15 | 277 |
| 3 | DSO – 4 | -21 | 67E | 144 | 64E | 10 | 282 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.