Daily Sunspot Evaluation
Observation Sheet Sunday, 23 December 1979
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)
- 73
- Relative number (R)
- 133
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19791223.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 18 | -15 | 40E | 20 | 37E | 401 | |
| 2 | E – 33 | -17 | 13W | 73 | 16W | 399 | |
| 3 | D – 7 | -31 | 45W | 105 | 48W | *400 | |
| 4 | A – 2 | -21 | 46W | 106 | 49W | 402 | |
| 5 | ? – 1 | -19 | 84W | 144 | 87W | 390 | |
| 6 | D – 12 | -7 | 65W | 125 | 68W | *397 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.