Daily Sunspot Evaluation
Observation Sheet Saturday, 23 November 1991
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)
- 7
- Number of spots (f)
- 34
- Relative number (R)
- 104
- Observer
- TK
- Reading
- all checks consistent
- File
- 19911123.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 4 | 24 | 17E | 188 | 14E | 7 | 646 |
| 2 | HA – 1 | 15 | 42E | 163 | 39E | 1 | 647 |
| 3 | HA – 3 | -17 | 35W | 240 | 38W | 2 | 639 |
| 4 | AX – 2 | -10 | 27W | 232 | 30W | 1.7 | 652 |
| 5 | DAO – 11 | -11 | 07E | 198 | 04E | 10 | 640 |
| 6 | AR – 12 | -9 | 20E | 185 | 17E | 3 | 644 |
| 7 | AR – 1 | -12 | 25E | 180 | 22E | 0.5 | 645 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.