Daily Sunspot Evaluation
Observation Sheet Sunday, 7 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)
- 9
- Number of spots (f)
- 91
- Relative number (R)
- 181
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19800907.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKI – 14 | 11 | 58W | 298 | 60W | 12.5 | |
| 2 | EKI – 27 | 22 | 30W | 270 | 32W | 11.5 | |
| 3 | BAO – 6 | 20 | 07W | 247 | 09W | 6 | |
| 4 | HSK – 1 | 26 | 07E | 233 | 05E | 2 | |
| 5 | DAI – 28 | 15 | 13E | 227 | 11E | 10 | |
| 6 | CAO – 2 | 8 | 68E | 172 | 66E | 4.5 | |
| 7 | DKI – 9 | -6 | 62W | 302 | 64W | 9 | |
| 8 | HSK – 1 | -5 | 49W | 289 | 51W | 2 | |
| 9 | AXX – 3 | -26 | 13E | 227 | 11E | 1.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.