Daily Sunspot Evaluation
Observation Sheet Saturday, 14 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)
- 13
- Number of spots (f)
- 174
- Relative number (R)
- 304
- Observer
- TA
- Reading
- all checks consistent
- File
- 19911214.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 2 | 12 | 66W | 354 | 68W | 1 | 669 |
| 2 | BXO – 9 | 21 | 62W | 350 | 64W | 10 | 664 |
| 3 | EKC – 63 | 10 | 18W | 306 | 20W | 14.5 | 640 |
| 4 | AX – 1 | 22 | 05E | 283 | 03E | - | 671 |
| 5 | FKO – 16 | -9 | 76W | 4 | 78W | 16 | 672 |
| 6 | FAI – 22 | -16 | 53W | 341 | 55W | 17.5 | 668 |
| 7 | BRO – 4 | -25 | 46W | 334 | 48W | 6.5 | 673 |
| 8 | BXI – 8 | -12 | 43W | 331 | 45W | 5.5 | 674 |
| 9 | AX – 2 | -29 | 42W | 330 | 44W | 0.5 | 675 |
| 10 | AX – 1 | -15 | 37W | 325 | 39W | - | 676 |
| 11 | AX – 1 | -26 | 04E | 284 | 02E | - | 677 |
| 12 | CHI – 29 | -4 | 21E | 267 | 19E | 12 | 678 |
| 13 | CAO – 16 | -15 | 33E | 255 | 31E | 5.5 | 679 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.