Daily Sunspot Evaluation
Observation Sheet Monday, 10 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)
- 20
- Number of spots (f)
- 152
- Relative number (R)
- 352
- Observer
- OG
- Reading
- all checks consistent
- File
- 19791210.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 4 | 20 | 08E | 223 | 05E | 368 | |
| 2 | A – 5 | 10 | 10E | 221 | 07E | 381 | |
| 3 | H – 6 | 24 | 52E | 179 | 49E | 375 | |
| 4 | H – 11 | 19 | 41E | 190 | 38E | 372 | |
| 5 | D – 10 | 12 | 22E | 209 | 19E | 376 | |
| 6 | J – 2 | 13 | 39E | 192 | 36E | 373 | |
| 7 | D – 23 | -15 | 23E | 208 | 20E | 378 | |
| 8 | A – 8 | -32 | 55E | 176 | 52E | 379 | |
| 9 | A – 2 | -26 | 37E | 194 | 34E | 386 | |
| 10 | B – 2 | -35 | 06E | 225 | 03E | 384 | |
| 11 | C – 48 | -12 | 12W | 243 | 15W | 362 | |
| 12 | H – 3 | -15 | 17W | 248 | 20W | 363 | |
| 13 | A – 5 | -6 | 13W | 244 | 16W | 387 | |
| 14 | ? – 1 | -23 | 70W | 301 | 73W | 352 | |
| 15 | B – 3 | -12 | 32W | 263 | 35W | 388 | |
| 16 | H – 7 | -15 | 50W | 281 | 53W | 354 | |
| 17 | C – 6 | 13 | 42W | 273 | 45W | 385 | |
| 18 | C – 2 | 10 | 07W | 238 | 10W | 369 | |
| 19 | A – 2 | 22 | 19W | 250 | 22W | 361 | |
| 20 | A – 2 | 24 | 02W | 233 | 05W | 374 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.