Daily Sunspot Evaluation
Observation Sheet Wednesday, 8 April 1987
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)
- 30
- Relative number (R)
- 70
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19870408.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 1 | -21 | 12W | 206 | 15W | - | 17 |
| 2 | EKC – 16 | -23 | 16E | 178 | 13E | 11 | 15 |
| 3 | EKI – 8 | -31 | 57E | 137 | 54E | 12 | 16 |
| 4 | CAI – 5 | -6 | 71E | 123 | 68E | 5 | 18 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.