Daily Sunspot Evaluation
Observation Sheet Saturday, 31 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)
- 10
- Number of spots (f)
- 131
- Relative number (R)
- 231
- Observer
- HÇ
- Reading
- all checks consistent
- File
- 19881231.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EAC – 20 | 22 | 50W | 166 | 52W | 11.5 | 361 |
| 2 | HA – 3 | 19 | 47W | 163 | 49W | 2.0 | 362 |
| 3 | CAI – 12 | 17 | 35W | 151 | 37W | 8.5 | 369 |
| 4 | AX – 2 | 17 | 02W | 118 | 04W | 0.5 | 377 |
| 5 | CAO – 13 | -41 | 43W | 159 | 45W | 10.5 | 373 |
| 6 | EKC – 29 | -20 | 42W | 158 | 44W | 12.5 | 365 |
| 7 | HA – 2 | -14 | 36W | 152 | 38W | 2.0 | 366 |
| 8 | CAI – 33 | -16 | 10W | 126 | 12W | 13.5 | 371 |
| 9 | AX – 13 | -18 | 07E | 109 | 05E | 3.5 | 375 |
| 10 | BXO – 4 | -19 | 25E | 91 | 23E | 4.5 | 376 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.