Daily Sunspot Evaluation
Observation Sheet Thursday, 28 June 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)
- 38
- Relative number (R)
- 158
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19790628.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 8 | 19 | 41E | 209 | 38E | 46 | |
| 2 | H – 2 | 15 | 38E | 212 | 35E | 47 | |
| 3 | ? – 5 | 20 | 80E | 170 | 77E | 56 | |
| 4 | J – 3 | 5 | 75E | 175 | 72E | 57 | |
| 5 | ? – 2 | -21 | 80E | 170 | 77E | 58 | |
| 6 | C – 5 | -16 | 04E | 246 | 01E | 53 | |
| 7 | H – 1 | -11 | 15W | 265 | 18W | 62 | |
| 8 | R – 1 | -26 | 73W | 323 | 76W | 41 | |
| 9 | A – 3 | -8 | 26W | 276 | 29W | 59 | |
| 10 | A – 3 | -6 | 59W | 309 | 62W | 38 | |
| 11 | A – 2 | 17 | 70W | 320 | 73W | 37 | |
| 12 | J – 3 | 26 | 01W | 251 | 04W | 64 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.