Daily Sunspot Evaluation
Observation Sheet Tuesday, 7 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)
- 67
- Relative number (R)
- 177
- Observer
- HÇ
- Reading
- all checks consistent
- File
- 19890207.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AR – 2 | 22 | 60W | 36 | 62W | 1.0 | 63 |
| 2 | AX – 2 | 32 | 09W | 345 | 14W | 0.25 | 44 |
| 3 | AX – 3 | 17 | 14E | 322 | 12E | 2.5 | 64 |
| 4 | AX – 2 | 26 | 29E | 307 | 27E | 1.0 | 25 |
| 5 | FKC – 35 | 31 | 50E | 286 | 48E | 18.5 | 22 |
| 6 | DAO – 5 | 19 | 67E | 269 | 65E | 8.0 | 26 |
| 7 | AR – 2 | -23 | 80W | 56 | 82W | 2.0 | 23 |
| 8 | HA – 2 | -22 | 20W | 356 | 22W | 1.0 | 54 |
| 9 | CAO – 8 | -27 | 03W | 339 | 05W | 3.0 | 52 |
| 10 | AX – 3 | -12 | 01E | 335 | 01W | 1.5 | 59 |
| 11 | CSO – 3 | -31 | 41E | 295 | 39E | 2.5 | 71 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.