Daily Sunspot Evaluation
Observation Sheet Thursday, 13 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)
- 9
- Relative number (R)
- 29
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19841213.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 2 | 19 | 51E | 146 | 48E | 3° 125 | |
| 2 | DAO – 7 | -12 | 23W | 220 | 26W | 6 22 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.