Daily Sunspot Evaluation
Observation Sheet Wednesday, 19 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)
- 9
- Number of spots (f)
- 60
- Relative number (R)
- 150
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19791219.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 19 | -15 | 39E | 72 | 38E | 399 | |
| 2 | G – 3 | -19 | 28W | 139 | 29W | 390 | |
| 3 | D – 6 | -5 | 12W | 123 | 13W | *397 | |
| 4 | ? – 2 | -24 | 70W | 181 | 71W | 396 | |
| 5 | A – 3 | -12 | 27W | 138 | 28W | 392 | |
| 6 | E – 10 | 10 | 48W | 159 | 49W | 395 | |
| 7 | E – 15 | 17 | 68W | 179 | 69W | 389 | |
| 8 | J – 1 | 20 | 80W | 191 | 81W | 392 | |
| 9 | A – 1 | 24 | 67W | 178 | 68W | 375 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.