Daily Sunspot Evaluation
Observation Sheet Monday, 21 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)
- 5
- Number of spots (f)
- 34
- Relative number (R)
- 84
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19981221.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CRO – 3 | 23 | 70W | 355 | 72W | 5 | 256 285 |
| 2 | AX – 1 | 24 | 47W | 332 | 49W | 0.3 | 255 341 |
| 3 | CAI – 20 | 20 | 34E | 251 | 32E | 1.6 | 256 384 |
| 4 | BAO – 8 | 19 | 70E | 215 | 68E | 12.5 | 258 346 |
| 5 | AX – 2 | -16 | 38W | 323 | 40W | 3 | 258 287 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.