Daily Sunspot Evaluation
Observation Sheet Sunday, 27 September 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)
- 8
- Number of spots (f)
- 40
- Relative number (R)
- 120
- Observer
- YK
- Reading
- counts consistent, some coordinates doubtful
- File
- 19980927.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 7 | 18 | 62W | 29 | 64W | 10 | 218 316 |
| 2 | HS – 1 | 32 | 49W | 16 | 51W | 2 | 214 213 |
| 3 | CHO – 10 | 21 | 48W | 10 ⚠ | 45W | 10.5 | 215 300 |
| 4 | DAC – 3 | -13 | 72W | 39 | 74W | 5.5 | 216 315 |
| 5 | EAO – 13 | -29 | 11E | 316 | 09E | 12 | 223 300 |
| 6 | AX – 1 | -31 | 19E | 308 | 17E | 224 283 | |
| 7 | CAI – 4 | -20 | 34W | 1 | 36W | 8 | 220 318 |
| 8 | AX – 1 | -14 | 25W | 352 | 27W | 225 220 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.