Daily Sunspot Evaluation
Observation Sheet Saturday, 12 February 1983
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)
- 4
- Relative number (R)
- 24
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19830212.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ARX – 1 | 2 | 35E | 7 | 33E | 05 | 65 |
| 2 | DAO – 3 | -18 | 80W | 122 | 82W | 15 | 42 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.