Daily Sunspot Evaluation
Observation Sheet Friday, 23 December 2005
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)
- 3
- Number of spots (f)
- 18
- Relative number (R)
- 48
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20051223.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 4 | 19 | 12W | 3 | 15W | 4.5 | |
| 2 | DAI – 10 | 17 | 31E | 320 | 28E | 7.5 | |
| 3 | DAI – 4 | -11 | 51W | 42 | 54W | <10 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.