Daily Sunspot Evaluation
Observation Sheet Tuesday, 22 December 1998
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)
- 2
- Number of spots (f)
- 8
- Relative number (R)
- 28
- Observer
- SB0
- Reading
- all checks consistent
- File
- 19981222.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CSO – 4 | 20 | 19E | 254 | 17E | 9.5 | 256 354 |
| 2 | DSO – 4 | 19 | 53E | 220 | 51E | 9.5 | 258 326 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.