Daily Sunspot Evaluation
Observation Sheet Friday, 25 February 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)
- 10
- Number of spots (f)
- 43
- Relative number (R)
- 143
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20000225.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 1 | 9 | 61W | 61 | 63W | - | |
| 2 | HH – 7 | 21 | 18W | 18 | 20W | 5 | |
| 3 | DSO – 3 | 18 | 06E | 354 | 04E | 8 | |
| 4 | CSI – 10 | 11 | 29E | 331 | 27E | 8 | |
| 5 | HS – 2 | 35 | 51E | 309 | 49E | 3 | |
| 6 | FAC – 3 | 20 | 67E | 293 | 65E | 16 | |
| 7 | DSO – 3 | -15 | 16E | 344 | 14E | ~5 | |
| 8 | BKC – 10 | -16 | 30E | 330 | 28E | ~10 | |
| 9 | HA – 1 | -11 | 41E | 319 | 39E | 2 | |
| 10 | ? – 3 | -16 | 80E | 280 | 78E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.