Daily Sunspot Evaluation
Observation Sheet Tuesday, 20 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)
- 12
- Number of spots (f)
- 242
- Relative number (R)
- 362
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19881220.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 10 | 78W | 339 | - | 341 | |
| 2 | FKC – 38 | 21 | 45W | 306 | 17.0 | 345 | |
| 3 | DKC – 52 | 27 | 15W | 276 | 10.0 | 347 | |
| 4 | DAE – 12 | 17 | 02W | 263 | 9.5 | 353 | |
| 5 | FKI – 49 | 26 | 00 | 261 | 21.0 | 354 | |
| 6 | AX – 1 | 32 | 36E | 225 | - | 359 | |
| 7 | EKI – 21 | 17 | 43E | 218 | 14.0 | 355 | |
| 8 | EKC – 13 | 22 | 62E | 199 | 12.0 | 356 | |
| 9 | FKE – 24 | -33 | 61W | 322 | 16.0 | 340 | |
| 10 | DAE – 22 | -21 | 04W | 265 | 8.5 | 057 | |
| 11 | BXO – 8 | -24 | 03E | 258 | 4.5 | 358 | |
| 12 | AX – 1 | -16 | 35E | 226 | - | 360 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.