Daily Sunspot Evaluation
Observation Sheet Wednesday, 4 December 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)
- 46
- Relative number (R)
- 116
- Observer
- HE
- Reading
- all checks consistent
- File
- 19911204.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 6 | 20 | 37E | 22 | 35E | 9 | 660 |
| 2 | ERC – 12 | 18 | 64E | 355 | 62E | 14.5 | 664 |
| 3 | HA – 2 | 10 | 67E | 352 | 65E | 2.5 | 665 |
| 4 | AX – 2 | -14 | 82W | 141 | 84W | 3 | 656 |
| 5 | CKO – 3 | -5 | 61W | 120 | 63W | 5.5 | 659 |
| 6 | DSC – 9 | -8 | 08W | 67 | 10W | 5.5 | 661 |
| 7 | DAI – 12 | -4 | 17E | 42 | 15E | 7 | 641 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.