Daily Sunspot Evaluation
Observation Sheet Sunday, 12 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)
- 178
- Relative number (R)
- 288
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19890212.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DSO – 5 | 17 | 55W | 325 | 57W | 10.0 | 64 |
| 2 | FKC – 58 | 31 | 12W | 282 | 14W | 21.5 | 73 |
| 3 | HA – 4 | 17 | 02W | 272 | 04W | 2.0 | 39 |
| 4 | BRO – 7 | 23 | 05E | 265 | 03E | 4.0 | 74 |
| 5 | AR – 1 | 21 | 13E | 257 | 11E | - | 81 |
| 6 | DKC – 23 | 16 | 29E | 241 | 27E | 9.0 | 77 |
| 7 | AR – 1 | 30 | 45E | 225 | 43E | 1.0 | 82 |
| 8 | ? – 9 | 20 | 73E | 197 | 71E | 12.0 | 83 |
| 9 | AR – 4 | -16 | 54W | 324 | 56W | 3.0 | 71 |
| 10 | HS – 2 | -30 | 24W | 294 | 26W | 2.0 | 72 |
| 11 | FKC – 64 | -17 | 28E | 242 | 26E | 16.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.