Daily Sunspot Evaluation
Observation Sheet Wednesday, 28 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)
- 11
- Number of spots (f)
- 171
- Relative number (R)
- 281
- Observer
- HÇ
- Reading
- counts consistent, some coordinates doubtful
- File
- 19881228.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 4 | 18 | 68W | 224 | 71W | 5.0 | 355 |
| 2 | EKI – 16 | 22 | 43W | 189 ⚠ | 46W | 14.0 | 356 |
| 3 | GKC – 28 | 23 | 08W | 164 | 11W | 11.0 | 361 |
| 4 | HA – 6 | 19 | 07W | 163 | 10W | 2.75 | 362 |
| 5 | CAO – 15 | 17 | 06E | 150 | 03E | 6.5 | 369 |
| 6 | BRO – 5 | 20 | 23E | 133 | 20E | 4.0 | 372 |
| 7 | BRO – 4 | -13 | 35W | 191 | 38W | 5.0 | 367 |
| 8 | AX – 5 | -42 | 03W | 159 | 06W | 3.25 | 373 |
| 9 | EAC – 51 | -20 | 01E | 155 | 02W | 12.5 | 365 |
| 10 | HS – 6 | -14 | 04E | 152 | 01E | 4.0 | 366 |
| 11 | CAI – 31 | -16 | 31E | 125 | 28E | 13.5 | 371 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.