Daily Sunspot Evaluation
Observation Sheet Monday, 19 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)
- 13
- Number of spots (f)
- 199
- Relative number (R)
- 329
- Observer
- HÇ
- Reading
- all checks consistent
- File
- 19881219.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 4 | 9 | 72W | 345 | 73W | 7.5 | 344 |
| 2 | AX – 1 | 34 | 70W | 343 | 71W | - | 351 |
| 3 | BXO – 2 | 30 | 63W | 336 | 64W | 4.0 | 352 |
| 4 | FKC – 43 | 21 | 32W | 305 | 33W | 15.0 | 353 |
| 5 | DKC – 29 | 27 | 03W | 276 | 04W | 11.0 | 347 |
| 6 | ERO – 6 | 17 | 09E | 264 | 08E | 4.5 | 353 |
| 7 | FKO – 43 | 26 | 11E | 262 | 10E | 18.0 | 354 |
| 8 | EHI – 9 | 18 | 55E | 218 | 54E | 14.0 | 355 |
| 9 | ? – 9 | 22 | 74E | 199 | 73E | 11.0 | 356 |
| 10 | CRO – 6 | -13 | 63W | 336 | 64W | 6.5 | 349 |
| 11 | FKC – 22 | -33 | 51W | 324 | 52W | 17.0 | 430 |
| 12 | DAC – 16 | -21 | 08E | 265 | 07E | 5.5 | 351 |
| 13 | BXO – 9 | -23 | 15E | 258 | 14E | 4.0 | 358 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.