Daily Sunspot Evaluation
Observation Sheet Sunday, 9 December 1984
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)
- 3
- Relative number (R)
- 23
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19841209.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ARX – 1 | -4 | 17W | 265 | 18W | -05 | 199 |
| 2 | ARX – 2 | -15 | 00 | 248 | 01W | 15 05 | 199 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.