Daily Sunspot Evaluation
Observation Sheet Friday, 12 October 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)
- 12
- Number of spots (f)
- 116
- Relative number (R)
- 236
- Observer
- HM
- Reading
- all checks consistent
- File
- 19791012.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 32 | 26 | 37E | 250 | 35E | 257 | |
| 2 | A – 1 | 32 | 66E | 223 | 64E | 262 | |
| 3 | H – 5 | 12 | 54E | 235 | 52E | 261 | |
| 4 | A – 1 | -30 | 41E | 248 | 39E | 263 | |
| 5 | A – 1 | -33 | 27E | 262 | 35E | 258 | |
| 6 | A – 1 | -27 | 11E | 278 | 09E | 264 | |
| 7 | D – 15 | -13 | 52W | 341 | 54W | 256 | |
| 8 | C – 11 | -5 | 52W | 341 | 54W | 259 | |
| 9 | G – 22 | 16 | 30W | 319 | 32W | 249 | |
| 10 | F – 19 | 12 | 07W | 296 | 09W | 255 | |
| 11 | G – 7 | 25 | 41W | 330 | 43W | 246 | |
| 12 | A – 1 | 31 | 66W | 355 | 68W | 265 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.