Daily Sunspot Evaluation
Observation Sheet Sunday, 9 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)
- 25
- Number of spots (f)
- 120
- Relative number (R)
- 370
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19791209.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 24 | 12E | 233 | 09E | 374 | |
| 2 | D – 8 | 9 | 07E | 238 | 04E | 369 | |
| 3 | C – 9 | 22 | 22E | 223 | 19E | 368 | |
| 4 | B – 7 | 11 | 22E | 223 | 19E | 381 | |
| 5 | B – 5 | 24 | 65E | 180 | 62E | 375 | |
| 6 | H – 4 | 19 | 53E | 192 | 50E | 372 | |
| 7 | C – 4 | 11 | 36E | 209 | 33E | 376 | |
| 8 | J – 2 | 13 | 52E | 193 | 49E | 373 | |
| 9 | A – 1 | -10 | 65E | 180 | 62E | 377 | |
| 10 | D – 11 | -15 | 38E | 207 | 35E | 378 | |
| 11 | A – 2 | -11 | 23E | 222 | 20E | 382 | |
| 12 | J – 3 | -32 | 65E | 180 | 62E | 379 | |
| 13 | B – 4 | -17 | 16E | 229 | 13E | 383 | |
| 14 | E – 20 | -12 | 03E | 242 | 00E | 362 | |
| 15 | A – 2 | -19 | 11E | 234 | 08E | 380 | |
| 16 | B – 3 | -35 | 18E | 227 | 15E | 384 | |
| 17 | H – 6 | -15 | 03W | 248 | 06W | 363 | |
| 18 | H – 10 | -17 | 36W | 281 | 39W | 354 | |
| 19 | G – 3 | -24 | 54W | 299 | 57W | 352 | |
| 20 | B – 5 | -20 | 52W | 297 | 55W | 370 | |
| 21 | A – 1 | -22 | 69W | 314 | 72W | 351 | |
| 22 | ? – 3 | -18 | 76W | 321 | 79W | 355 | |
| 23 | ? – 1 | -13 | 80W | 325 | 83W | 365 | |
| 24 | C – 3 | 13 | 29W | 272 | 30W | 385 | |
| 25 | J – 1 | 21 | 06W | 251 | 09W | 361 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.