Daily Sunspot Evaluation
Observation Sheet Friday, 6 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)
- 69
- Relative number (R)
- 139
- Observer
- YK
- Reading
- all checks consistent
- File
- 19911206.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 11 | 20 | 11E | 22 | 09E | 9 | 660 |
| 2 | EKC – 24 | 18 | 38E | 355 | 36E | 14 | 664 |
| 3 | HA – 3 | 10 | 40E | 353 | 38E | 2.5 | 665 |
| 4 | HA – 5 | -8 | 35W | 68 | 37W | 5 | 661 |
| 5 | AX – 2 | -19 | 25W | 58 | 27W | 3 | 663 |
| 6 | CAI – 16 | -15 | 11W | 44 | 13W | 10 | 667 |
| 7 | CAI – 8 | -18 | 56E | 337 | 54E | 10 | 668 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.