Daily Sunspot Evaluation
Observation Sheet Wednesday, 15 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)
- 11
- Number of spots (f)
- 119
- Relative number (R)
- 229
- Observer
- MB
- Reading
- all checks consistent
- File
- 19890215.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKC – 19 | 32 | 52W | 283 | 54W | 25.0 | 76 |
| 2 | AX – 1 | 22 | 37W | 268 | 39W | 0.25 | 82 |
| 3 | DAO – 10 | 24 | 12W | 243 | 14W | 7.0 | 73 |
| 4 | DAE – 17 | 16 | 12W | 243 | 14W | 7.5 | 82 |
| 5 | AX – 1 | 28 | 23E | 208 | 21E | 0.25 | 25 |
| 6 | EAO – 13 | 20 | 33E | 198 | 31E | 13.0 | 79 |
| 7 | BXO – 4 | 31 | 48E | 183 | 46E | 4.0 | 72 |
| 8 | AX – 1 | -26 | 24W | 255 | 26W | 0.25 | 72 |
| 9 | FKC – 49 | -16 | 12W | 243 | 14W | 16.0 | 72 |
| 10 | AX – 3 | -13 | 70E | 161 | 68E | 3.0 | 72 |
| 11 | ? – 1 | -22 | 81E | 150 | 79E | 3.0 | 72 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.