Daily Sunspot Evaluation
Observation Sheet Thursday, 13 November 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)
- 3
- Relative number (R)
- 33
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19971113.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 28 | 64W | 268 | 66W | 2 | 37 |
| 2 | ? – 1 | 20 | 85E | 119 | 83E | - | 36 |
| 3 | AX – 1 | -24 | 16W | 220 | 18W | 0.6 | 38 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.