Daily Sunspot Evaluation
Observation Sheet Wednesday, 12 September 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)
- 11
- Number of spots (f)
- 100
- Relative number (R)
- 210
- Observer
- ED
- Reading
- all checks consistent
- File
- 19790912.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 14 | 27 | 49E | 276 | 46E | 197 | |
| 2 | D – 21 | 15 | 22E | 303 | 19E | 195 | |
| 3 | B – 4 | 21 | 72E | 253 | 69E | 202 | |
| 4 | E – 33 | 9 | 22E | 303 | 19E | 196 | |
| 5 | H – 1 | -25 | 56E | 269 | 53E | 200 | |
| 6 | C – 10 | -26 | 47W | 12 | 50W | 198 | |
| 7 | B – 3 | -31 | 53W | 18 | 56W | 201 | |
| 8 | J – 1 | -19 | 75W | 40 | 78W | 183 | |
| 9 | E – 10 | 13 | 20W | 345 | 23W | 190 | |
| 10 | Z – 1 | 14 | 84W | 49 | 87W | 192 | |
| 11 | A – 2 | 14 | 03W | 328 | 06W | 203 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.