Daily Sunspot Evaluation
Observation Sheet Thursday, 12 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)
- 12
- Number of spots (f)
- 90
- Relative number (R)
- 210
- Observer
- AÖ0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19790712.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 30 | 87E | 328 ⚠ | 84E | 92 | |
| 2 | D – 11 | 11 | 22E | 48 ⚠ | 19E | 91 | |
| 3 | C – 6 | -26 | 69E | 356 | 66E | 93 | |
| 4 | J – 3 | -28 | 29W | 94 | 32W | 76 | |
| 5 | J – 1 | -19 | 25W | 90 | 28W | 75 | |
| 6 | ? – 2 | 4 | 82W | 147 | 85W | 63 | |
| 7 | H – 5 | 9 | 59W | 124 | 62W | 67 | |
| 8 | H – 3 | 12 | 36W | 101 | 39W | 72 | |
| 9 | H – 3 | 21 | 65W | 130 | 68W | 66 | |
| 10 | A – 6 | 16 | 29W | 94 | 32W | 94 | |
| 11 | D – 28 | 21 | 31W | 96 | 34W | 84 | |
| 12 | D – 21 | 28 | 09W | 74 | 12W | 83 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.