Daily Sunspot Evaluation
Observation Sheet Sunday, 15 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)
- 11
- Number of spots (f)
- 51
- Relative number (R)
- 161
- Observer
- ED
- Reading
- all checks consistent
- File
- 19790715.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 17 | 30 | 52E | 333 | 49E | 92 | |
| 2 | ? – 1 | -3 | 78E | 307 | 75E | 96 | |
| 3 | D – 12 | -26 | 33E | 352 | 30E | 73 | |
| 4 | A – 1 | -27 | 11W | 36 | 14W | 97 | |
| 5 | A – 1 | -29 | 70W | 95 | 72W | 76 | |
| 6 | J – 1 | -19 | 66W | 91 | 69W | 75 | |
| 7 | J – 1 | 12 | 77W | 102 | 80W | 72 | |
| 8 | D – 6 | 11 | 20W | 45 | 23W | 91 | |
| 9 | J – 2 | 16 | 69W | 94 | 72W | 94 | |
| 10 | H – 5 | 20 | 70W | 95 | 73W | 84 | |
| 11 | G – 4 | 27 | 47W | 72 | 50W | 83 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.