Daily Sunspot Evaluation
Observation Sheet Thursday, 9 February 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)
- 8
- Number of spots (f)
- 116
- Relative number (R)
- 196
- Observer
- YK
- Reading
- all checks consistent
- File
- 19890209.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXI – 13 | 16 | 13W | 323 | 15W | 4.75 | 3 |
| 2 | FKC – 52 | 31 | 26E | 284 | 24E | 19.25 | 3 |
| 3 | AX – 1 | 16 | 32E | 278 | 30E | - | 3 |
| 4 | CKE – 15 | 21 | 42E | 268 | 40E | 7.25 | 3 |
| 5 | DAO – 5 | 16 | 67E | 243 | 65E | 7.75 | 3 |
| 6 | AX – 1 | -23 | 46W | 356 | 48W | 0.5 | 3 |
| 7 | HS – 5 | -31 | 18E | 292 | 16E | 1.25 | 3 |
| 8 | FKC – 24 | -17 | 70E | 240 | 68E | 17.50 | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.