Daily Sunspot Evaluation
Observation Sheet Sunday, 13 December 1970
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)
- 6
- Number of spots (f)
- 62
- Relative number (R)
- 122
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19701213.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 27 | 13 | 10E | 04 | |||
| 2 | ? – 3 | 19 | 80E | 294 | |||
| 3 | A – 1 | 3 | 25E | 349 | |||
| 4 | B – 2 | -11 | 40W | 54 | |||
| 5 | D – 12 | -6 | 44W | 58 | |||
| 6 | E – 17 | 14 | 19W | 33 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.