Daily Sunspot Evaluation
Observation Sheet Monday, 4 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)
- 13
- Number of spots (f)
- 112
- Relative number (R)
- 242
- Observer
- HÇ
- Reading
- all checks consistent
- File
- 19891204.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKI – 10 | 18 | 61W | 35 | 63W | 7 | |
| 2 | BXO – 2 | 26 | 30W | 4 | 32W | 2 | |
| 3 | CAE – 13 | 10 | 24W | 358 | 26W | 5.5 | |
| 4 | BRI – 18 | 11 | 08E | 326 | 06E | 6.5 | |
| 5 | HK – 7 | 18 | 29E | 305 | 27E | 5.5 | |
| 6 | BXO – 3 | 16 | 35E | 299 | 33E | 2.5 | |
| 7 | DKC – 21 | 19 | 55E | 279 | 53E | 5.5 | |
| 8 | BXE – 3 | -13 | 62W | 36 | 64W | 3 | |
| 9 | DAE – 15 | -10 | 34W | 8 | 36W | 8 | |
| 10 | AX – 8 | -16 | 31W | 5 | 33W | 2 | |
| 11 | BXO – 4 | -20 | 23W | 357 | 25W | 2.5 | |
| 12 | HS – 1 | -16 | 04W | 338 | 06W | 2 | |
| 13 | BXO – 7 | -15 | 22E | 312 | 20E | 5.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.