Daily Sunspot Evaluation
Observation Sheet Saturday, 11 October 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)
- 2
- Number of spots (f)
- 17
- Relative number (R)
- 37
- Observer
- YK
- Reading
- all checks consistent
- File
- 19971011.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 7 | 22 | 27W | 307 | 29W | 4.5 | 83 |
| 2 | DAI – 10 | 31 | 25E | 255 | 23E | 6.5 | 82 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.