Daily Sunspot Evaluation
Observation Sheet Thursday, 10 December 1998
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)
- 8
- Number of spots (f)
- 47
- Relative number (R)
- 127
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19981210.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 16 | 70W | 139 | 70W | 2.5 | 282 |
| 2 | DAO – 4 | 15 | 50W | 119 | 50W | 9.5 | 283 |
| 3 | HS – 1 | 20 | 33W | 102 | 33W | 1 | 284 |
| 4 | EKO – 15 | -21 | 44W | 113 | 44W | 12 | 286 |
| 5 | BXI – 9 | -17 | 12W | 81 | 12W | 6.5 | 287 |
| 6 | HA – 4 | -14 | 11E | 58 | 11E | 2.5 | 288 |
| 7 | AX – 3 | -20 | 34E | 35 | 34E | 3 | 289 |
| 8 | FAO – 10 | -28 | 45E | 24 | 45E | 17 | 290 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.