Daily Sunspot Evaluation
Observation Sheet Saturday, 18 August 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)
- 7
- Number of spots (f)
- 72
- Relative number (R)
- 142
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19790818.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 5 | 16 | 02E | 294 | 08W | 153 | |
| 2 | J – 1 | 17 | 42E | 254 | 39E | 150 | |
| 3 | F – 45 | -26 | 23E | 273 | 20E | 148 | |
| 4 | C – 8 | -24 | 06E | 290 | 03E | 146 | |
| 5 | H – 6 | 16 | 57W | 353 | 60W | 136 | |
| 6 | B – 5 | 14 | 45W | 341 | 48W | 152 | |
| 7 | J – 2 | 17 | 03W | 299 | 06W | 145 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.