Daily Sunspot Evaluation
Observation Sheet Thursday, 31 December 1992
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)
- 5
- Number of spots (f)
- 18
- Relative number (R)
- 68
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19921231.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 4 | 16 | 84W | 357 | 86W | - | G48 |
| 2 | AX – 2 | 12 | 69W | 342 | 71W | 2 | G33 |
| 3 | CAO – 7 | 9 | 44W | 317 | 46W | 8 | G46 |
| 4 | HR – 1 | -4 | 49W | 322 | 51W | 0.5 | G44 |
| 5 | HA – 4 | -10 | 43W | 316 | 45W | 3 | G45 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.