Daily Sunspot Evaluation
Observation Sheet Wednesday, 10 September 1997
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)
- 3
- Number of spots (f)
- 74
- Relative number (R)
- 104
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19970910.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 29 | 22 | 10E | 319 | 07E | 10 | 71 |
| 2 | UKT – 21 | -28 | 26W | 355 | 29W | 9 | 72 |
| 3 | FKC – 24 | -25 | 38E | 291 | 35E | 19 | 74 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.