Daily Sunspot Evaluation
Observation Sheet Friday, 4 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)
- 7
- Number of spots (f)
- 34
- Relative number (R)
- 104
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 19981204.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CSO – 10 | 19 | 39W | 189 | 42W | 10 | 221 240 |
| 2 | CAO – 6 | 21 | 21W | 171 | 24W | 5 | 252 280 |
| 3 | CRO – 3 | 19 | 16W | 166 | 19W | 4 | 253 281 |
| 4 | XSO – 6 | 15 | 15E | 135 | 12E | 11.5 | 281 382 |
| 5 | EKO – 5 | 16 | 33E | 117 | 30E | 12 | 285 289 |
| 6 | HA – 1 | 21 | 49E | 101 | 46E | 1 | 288 384 |
| 7 | CAO – 3 | -17 | 68W | 218 | 71W | 2 | 290 292 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.