Daily Sunspot Evaluation
Observation Sheet Monday, 11 December 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)
- 7
- Number of spots (f)
- 39
- Relative number (R)
- 109
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19891211.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HH – 1 | 18 | 64W | 307 | 67W | 4 | |
| 2 | DAO – 9 | 19 | 36W | 279 | 39W | 4 | |
| 3 | CAI – 9 | 13 | 00 | 243 | 03W | 8.5 | |
| 4 | CAO – 5 | 14 | 50E | 193 | 47E | 4.5 | |
| 5 | BAO – 3 | -14 | 18W | 261 | 21W | 4.5 | |
| 6 | BAO – 2 | -24 | 25E | 218 | 22E | 3 | |
| 7 | HS – 10 | -9 | 26E | 217 | 23E | 2.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.