Daily Sunspot Evaluation
Observation Sheet Wednesday, 18 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)
- 8
- Number of spots (f)
- 61
- Relative number (R)
- 141
- Observer
- ED
- Reading
- all checks consistent
- File
- 19790718.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 16 | 29 | 14E | 332 | 11E | 92 | |
| 2 | B – 2 | 32 | 51E | 295 | 48E | 102 | |
| 3 | J – 1 | 11 | 70E | 276 | 67E | 100 | |
| 4 | G – 13 | -4 | 42E | 304 | 39E | 96 | |
| 5 | C – 15 | -29 | 07W | 353 | 10W | 93 | |
| 6 | C – 6 | -20 | 43W | 29 | 46W | 101 | |
| 7 | A – 3 | -26 | 65W | 51 | 68W | 98 | |
| 8 | C – 5 | 10 | 62W | 48 | 65W | 91 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.