Daily Sunspot Evaluation
Observation Sheet Thursday, 19 July 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)
- 10
- Number of spots (f)
- 62
- Relative number (R)
- 162
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19790719.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 9 | 32 | 38E | 295 | 35E | 102 | |
| 2 | J – 1 | 11 | 58E | 275 | 55E | 100 | |
| 3 | G – 14 | -3 | 29E | 304 | 26E | 96 | |
| 4 | C – 10 | -28 | 21W | 354 | 24W | 93 | |
| 5 | C – 5 | -22 | 18W | 351 | 21W | 103 | |
| 6 | C – 3 | -20 | 56W | 29 | 59W | 101 | |
| 7 | A – 2 | 9 | 75W | 48 | 78W | 91 | |
| 8 | B – 8 | 15 | 19W | 352 | 22W | 104 | |
| 9 | A – 3 | 27 | 35W | 8 | 38W | 105 | |
| 10 | G – 7 | 29 | 04W | 334 | 04W | 92 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.