Daily Sunspot Evaluation
Observation Sheet Sunday, 10 August 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)
- 6
- Number of spots (f)
- 26
- Relative number (R)
- 86
- Observer
- OG
- Reading
- all checks consistent
- File
- 19800810.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 2 | 18 | 22W | 273 | 25W | 2 | |
| 2 | DAI – 13 | 10 | 11W | 262 | 14W | 7 | |
| 3 | HAX – 1 | 18 | 19E | 232 | 16E | 1.5 | |
| 4 | ARX – 1 | 13 | 69E | 182 | 66E | 1 | |
| 5 | DAO – 7 | -5 | 44W | 295 | 47W | 9 | |
| 6 | HKX – 2 | -28 | 15E | 236 | 12E | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.