Daily Sunspot Evaluation
Observation Sheet Thursday, 9 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)
- 11
- Number of spots (f)
- 49
- Relative number (R)
- 159
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19790809.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 13 | 04E | 51 | 01E | 130 | |
| 2 | D – 10 | 28 | 52E | 3 | 49E | 135 | |
| 3 | A – 1 | 16 | 22E | 33 | 19E | 139 | |
| 4 | A – 4 | 17 | 49E | 6 | 46E | 140 | |
| 5 | H – 20 | 15 | 62E | 353 | 59E | 136 | |
| 6 | J – 3 | -15 | 28E | 27 | 25E | 132 | |
| 7 | J – 4 | -26 | 24E | 31 | 21E | 133 | |
| 8 | B – 2 | -12 | 12E | 43 | 09E | 138 | |
| 9 | A – 1 | -25 | 02E | 53 | 01W | 141 | |
| 10 | A – 1 | -17 | 64W | 119 | 67W | 142 | |
| 11 | J – 2 | 11 | 72W | 127 | 75W | 120 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.