Daily Sunspot Evaluation
Observation Sheet Tuesday, 25 April 2000
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)
- 8
- Number of spots (f)
- 136
- Relative number (R)
- 216
- Observer
- —
- Reading
- all checks consistent
- File
- 20000425.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 13 | 20 | 43W | 331 | 46W | 9 | |
| 2 | EAO – 20 | 33 | 39W | 327 | 42W | 12 | |
| 3 | EAC – 21 | 22 | 07W | 295 | 10W | 15 | |
| 4 | HS – 3 | 10 | 03E | 285 | 00 | ?1 | |
| 5 | EKC – 25 | 18 | 25E | 263 | 12E | 15 | |
| 6 | DSO – 7 | -13 | 42W | 330 | 15W | ?5 | |
| 7 | DAE – 11 | -17 | 29W | 317 | 32W | ?8 | |
| 8 | EKC – 36 | -14 | 26E | 262 | 23E | 13 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.