Daily Sunspot Evaluation
Observation Sheet Wednesday, 15 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)
- 15
- Relative number (R)
- 35
- Observer
- SB0
- Reading
- all checks consistent
- File
- 19971015.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 9 | 31 | 27W | 254 | 29W | 10 | 82 |
| 2 | CSI – 6 | 13 | 58E | 169 | 56E | 5 | 84 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.