Daily Sunspot Evaluation
Observation Sheet Wednesday, 18 May 1988
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)
- 2
- Number of spots (f)
- 14
- Relative number (R)
- 34
- Observer
- FL
- Reading
- all checks consistent
- File
- 19880518.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 5 | 22 | 23W | 258 | 06W | 3.5 | 101 |
| 2 | DAF – 9 | -18 | 46W | 281 | 49W | 7.5 | 103 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.