Daily Sunspot Evaluation
Observation Sheet Friday, 28 April 1989
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)
- 76
- Relative number (R)
- 136
- Observer
- HÇ
- Reading
- all checks consistent
- File
- 19890428.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 5 | 24 | 38W | 38 | 35W | 5 | 195 |
| 2 | AX – 3 | 25 | 08E | 352 | 07E | 1 | 200 |
| 3 | AX – 4 | 12 | 30E | 330 | 29E | 1 | 198 |
| 4 | EKI – 15 | -22 | 65W | 65 | 66W | 14 | 194 |
| 5 | CAI – 20 | -19 | 34W | 34 | 35W | 14 | 197 |
| 6 | EKI – 29 | -19 | 45E | 315 | 44E | 14 | 200 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.