Daily Sunspot Evaluation
Observation Sheet Thursday, 12 June 1980
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)
- 9
- Number of spots (f)
- 105
- Relative number (R)
- 195
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19800612.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 9 | 24 | 34W | 345 | 37W | 7 | |
| 2 | DAO – 11 | 15 | 30W | 341 | 33W | 8 | |
| 3 | CAO – 10 | 14 | 13W | 324 | 16W | 9 | |
| 4 | DAC – 14 | 13 | 33E | 278 | 30E | 6.5 | |
| 5 | CKE – 14 | 18 | 34E | 277 | 31E | 13 | |
| 6 | EAC – 30 | -15 | 43W | 354 | 46W | 18 | |
| 7 | DAO – 7 | -25 | 40W | 351 | 43W | 11 | |
| 8 | HKX – 8 | -12 | 41E | 270 | 38E | 5 | |
| 9 | AXX – 2 | -11 | 55W | 6 | 58W | 1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.