Daily Sunspot Evaluation
Observation Sheet Friday, 11 July 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)
- 7
- Number of spots (f)
- 47
- Relative number (R)
- 117
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19800711.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HKI – 16 | 17 | 06E | 282 | 03E | 8.5 | |
| 2 | DAI – 14 | 18 | 55E | 233 | 52E | 11 | |
| 3 | AXX – 3 | 22 | 54E | 234 | 51E | 4.5 | |
| 4 | AXX – 1 | -12 | 19W | 307 | 22W | - | |
| 5 | HAX – 1 | -12 | 11E | 277 | 08E | 2.5 | |
| 6 | CRO – 6 | -3 | 23E | 265 | 20E | 6.5 | |
| 7 | ? – 6 | -12 | 78E | 210 | 75E | 6.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.