Daily Sunspot Evaluation
Observation Sheet Thursday, 29 January 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)
- 19
- Relative number (R)
- 69
- Observer
- HE
- Reading
- all checks consistent
- File
- 19980129.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 2 | 15 | 07E | 264 | 04E | 1 | 16 |
| 2 | BXI – 4 | 28 | 08E | 261 | 07E | 4 | 12 |
| 3 | ? – 1 | -21 | 85W | 354 | 86W | 18 | |
| 4 | AX – 1 | -26 | 45W | 314 | 46W | 13 | |
| 5 | FSI – 11 | -36 | 08W | 277 | 09W | 19 | 20 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.