Daily Sunspot Evaluation
Observation Sheet Saturday, 15 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)
- 13
- Number of spots (f)
- 110
- Relative number (R)
- 240
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19791215.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 4 | 9 | 06E | 159 | 04E | 395 | |
| 2 | G – 3 | -12 | 32E | 133 | 30E | 392 | |
| 3 | D – 18 | -19 | 27E | 138 | 25E | 390 | |
| 4 | A – 5 | -24 | 32E | 133 | 30E | 393 | |
| 5 | B – 7 | -24 | 12W | 177 | 14W | 396 | |
| 6 | E – 25 | -15 | 44W | 209 | 46W | 378 | |
| 7 | ? – 1 | -16 | 83W | 248 | 85W | 363 | |
| 8 | ? – 1 | -11 | 85W | 250 | 87W | 362 | |
| 9 | C – 7 | 4 | 09W | 174 | 11W | 391 | |
| 10 | J – 2 | 13 | 28W | 193 | 30W | 373 | |
| 11 | H – 2 | 20 | 27W | 192 | 29W | 372 | |
| 12 | E – 21 | 17 | 13W | 178 | 15W | 389 | |
| 13 | C – 14 | 24 | 15W | 180 | 17W | 375 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.