Daily Sunspot Evaluation
Observation Sheet Friday, 23 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)
- 15
- Number of spots (f)
- 152
- Relative number (R)
- 302
- Observer
- HE
- Reading
- all checks consistent
- File
- 19881223.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 23 | 80W | 301 | 82W | - | 349 |
| 2 | DKI – 23 | 27 | 54W | 275 | 55W | 10.0 | 347 |
| 3 | HK – 11 | 24 | 48W | 269 | 49W | 5.0 | 354 |
| 4 | EAO – 15 | 17 | 44W | 265 | 45W | 12.0 | 353 |
| 5 | AX – 2 | 31 | 03W | 224 | 04W | 2.5 | 359 |
| 6 | CKC – 24 | 17 | 01E | 220 | 00 | 11.5 | 355 |
| 7 | EKC – 24 | 22 | 21E | 200 | 20E | 14.5 | 356 |
| 8 | CSO – 6 | 23 | 60E | 161 | 59E | 11.0 | 361 |
| 9 | CSI – 6 | 20 | 59E | 162 | 58E | 6.0 | 362 |
| 10 | ? – 4 | -34 | 79W | 300 | 80W | 8.0 | 360= |
| 11 | CAO – 8 | -35 | 61W | 282 | 62W | 8.0 | 363 |
| 12 | CAI – 13 | -23 | 42W | 263 | 43W | 13.0 | 457 |
| 13 | AX – 2 | -13 | 52E | 169 | 51E | - | 367 |
| 14 | HA – 3 | -14 | 69E | 152 | 68E | 6.0 | 366 |
| 15 | BRO – 9 | -18 | 65E | 156 | 64E | 10.0 | 365 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.