Daily Sunspot Evaluation
Observation Sheet Wednesday, 6 April 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)
- 4
- Number of spots (f)
- 16
- Relative number (R)
- 56
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19880406.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAF – 5 | 25 | 32E | 37 | 30E | 5 | 65 |
| 2 | ERO – 7 | 18 | 38E | 31 | 36E | 14 | 64 |
| 3 | HS – 1 | -19 | 66W | 135 | 68W | 2 | 59 |
| 4 | ? – 3 | -32 | 81E | 348 | 79E | 66 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.