Daily Sunspot Evaluation
Observation Sheet Sunday, 23 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)
- 13
- Number of spots (f)
- 168
- Relative number (R)
- 298
- Observer
- SB0
- Reading
- counts consistent, some coordinates doubtful
- File
- 20000423.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 3 | 15 | 49W | 1 | 49W | 3 | |
| 2 | HS – 1 | 23 | 46W | 358 | 46W | 1 | |
| 3 | DAO – 10 | 19 | 19W | 331 | 19W | 0.7 | |
| 4 | EAI – 28 | 34 | 14W | 326 | 14W | ~10.5 | |
| 5 | EAI – 22 | 22 | 18E | 294 | 18E | 13.5 | |
| 6 | CAO – 5 | 12 | 30E | 282 | 30E | 6.5 | |
| 7 | EKO – 18 | 18 | 50E | 262 | 50E | 16.5 | |
| 8 | ? – 5 | -22 | 7W | 23 ⚠ | 7W | - | |
| 9 | OSO – 7 | -13 | 18W | 330 | 18W | 6 | |
| 10 | DAI – 9 | -16 | 05W | 317 | 05W | ~4.5 | |
| 11 | EKC – 56 | -14 | 52E | 260 | 52E | ~15 | |
| 12 | AX – 2 | -23 | 60E | 252 | 60E | - | |
| 13 | AX – 2 | -14 | 68E | 244 | 68E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.