Daily Sunspot Evaluation
Observation Sheet Saturday, 9 December 2000
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)
- 4
- Number of spots (f)
- 19
- Relative number (R)
- 59
- Observer
- MB
- Reading
- all checks consistent
- File
- 20001209.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DSI – 10 | 10 | 09W | 164 | 10W | ~4 | |
| 2 | CRO – 4 | 19 | 05E | 150 | 04E | ~4 | |
| 3 | DAO – 4 | 14 | 68E | 87 | 67E | ~8 | |
| 4 | HR – 1 | -6 | 63W | 218 | 64W | ~1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.