Daily Sunspot Evaluation
Observation Sheet Wednesday, 12 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)
- 8
- Relative number (R)
- 28
- Observer
- HG
- Reading
- all checks consistent
- File
- 19841212.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ARX – 1 | 18 | 57E | 151 | 57E | 075 1 | 195 |
| 2 | DKF – 7 | -12 | 13W | 221 | 13W | 55 19 | 196 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.