Daily Sunspot Evaluation
Observation Sheet Thursday, 22 December 1988
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)
- 15
- Number of spots (f)
- 117
- Relative number (R)
- 267
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19881222.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKC – 8 | 22 | 72W | 306 | 73W | 15.5 | 359 |
| 2 | EKC – 26 | 27 | 40W | 274 | 41W | 11.5 | 347 |
| 3 | CKO – 8 | 24 | 33W | 267 | 34W | 8.5 | 354 |
| 4 | EAC – 15 | 16 | 32W | 266 | 33W | 11.5 | 353 |
| 5 | AX – 3 | 31 | 09E | 225 | 08E | 2.0 | 359 |
| 6 | EKO – 9 | 17 | 14E | 220 | 13E | 12.0 | 355 |
| 7 | EKC – 15 | 22 | 33E | 201 | 32E | 11.5 | 356 |
| 8 | HS – 1 | 23 | 65E | 169 | 64E | 2.0 | 361 |
| 9 | HS – 3 | 20 | 69E | 165 | 68E | 3.5 | 362 |
| 10 | DSO – 4 | -34 | 69W | 303 | 70W | 8.0 | 360 |
| 11 | CAO – 4 | -35 | 49W | 283 | 50W | 6.0 | 363 |
| 12 | DAC – 13 | -22 | 31W | 265 | 32W | 10.0 | 357 |
| 13 | CAO – 4 | -18 | 14W | 248 | 15W | 3.0 | 364 |
| 14 | ? – 2 | -18 | 78E | 156 | 77E | 4.0 | 365 |
| 15 | ? – 2 | -14 | 79E | 155 | 78E | 3.0 | 366 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.