Daily Sunspot Evaluation
Observation Sheet Tuesday, 9 September 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)
- 10
- Number of spots (f)
- 49
- Relative number (R)
- 149
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19800909.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HKX – 1 | 111 | 80W | 294 | 83W | 3 | |
| 2 | EKX – 15 | 23 | 55W | 269 | 50W | 13 | |
| 3 | BXO – 6 | 19 | 34W | 248 | 37W | 3 | |
| 4 | HSX – 1 | 26 | 18W | 232 | 21W | 2 | |
| 5 | HEX – 4 | 12 | 17W | 231 | 20W | 3 | |
| 6 | CAO – 7 | 7 | 41E | 173 | 38E | 6 | |
| 7 | AEK – 1 | 18 | 64E | 150 | 61E | 1 | |
| 8 | DSE – 10 | 13 | 67E | 147 | 64E | 10 | |
| 9 | HSX – 1 | -5 | 74W | 288 | 77W | 2 | |
| 10 | AXX – 3 | -12 | 28W | 242 | 31W | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.