Daily Sunspot Evaluation
Observation Sheet Saturday, 11 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)
- 141
- Relative number (R)
- 221
- Observer
- YK
- Reading
- all checks consistent
- File
- 19890211.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DSI – 8 | 17 | 41W | 324 | 43W | 9.0 | 64 |
| 2 | FKC – 50 | 32 | 01E | 282 | 01W | 21.0 | 73 |
| 3 | HA – 6 | 23 | 18E | 265 | 16E | 3.25 | 74 |
| 4 | DKC – 31 | 17 | 41E | 242 | 39E | 9.0 | 73 |
| 5 | AX – 1 | 30 | 59E | 224 | 57E | 1.0 | 80 |
| 6 | AX – 1 | -22 | 73W | 356 | 75W | 1.0 | 54 |
| 7 | AR – 3 | -30 | 11W | 294 | 12W | 2.5 | 73 |
| 8 | FKC – 41 | -17 | 40E | 243 | 38E | 17.0 | 73 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.