Daily Sunspot Evaluation
Observation Sheet Wednesday, 28 April 1993
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)
- 6
- Number of spots (f)
- 28
- Relative number (R)
- 88
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19930428.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 5 | 12 | 74W | 233 | 77W | 5 | |
| 2 | DAI – 5 | 8 | 30E | 129 | 27E | 9 | |
| 3 | AX – 2 | -15 | 55W | 214 | 58W | - | |
| 4 | AX – 1 | -23 | 06E | 153 | 03E | - | |
| 5 | CRI – 12 | -13 | 06E | 153 | 03E | 4 | |
| 6 | DAO – 3 | -12 | 71E | 88 | 68E | 5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.