Daily Sunspot Evaluation
Observation Sheet Saturday, 15 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)
- 13
- Number of spots (f)
- 97
- Relative number (R)
- 227
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19790915.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 14 | 27 | 10E | 275 | 07E | 197 | |
| 2 | B – 6 | 33 | 48E | 237 | 45E | 204 | |
| 3 | D – 17 | 21 | 32E | 253 | 29E | 202 | |
| 4 | A – 1 | 15 | 65E | 220 | 62E | 209 | |
| 5 | J – 1 | -12 | 56E | 229 | 53E | 206 | |
| 6 | A – 1 | -11 | 33E | 252 | 30E | 210 | |
| 7 | A – 1 | -12 | 25E | 260 | 22E | 207 | |
| 8 | H – 2 | -26 | 18E | 267 | 15E | 200 | |
| 9 | B – 6 | -6 | 47W | 332 | 50W | 208 | |
| 10 | F – 26 | 8 | 81W | 6 | 24W | 196 | |
| 11 | G – 4 | 13 | 64W | 349 | 67W | 190 | |
| 12 | A – 3 | 12 | 49W | 334 | 52W | 203 | |
| 13 | C – 15 | 15 | 20W | 305 | 23W | 195 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.