Daily Sunspot Evaluation
Observation Sheet Sunday, 28 April 2002
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)
- 5
- Number of spots (f)
- 29
- Relative number (R)
- 79
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 20020428.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DSO – 4 | 5 | 42W | 16 | 45W | 9.5 | |
| 2 | DAI – 12 | 12 | 30W | 4 | 33W | ~7 | |
| 3 | BXO – 6 | 14 | 17W | 351 | 20W | 3 | |
| 4 | HS – 5 | 13 | 11E | 323 | 08E | ~5 | |
| 5 | HA – 2 | 12 | 22E | 312 | 19E | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.