Daily Sunspot Evaluation
Observation Sheet Tuesday, 10 February 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)
- 4
- Number of spots (f)
- 12
- Relative number (R)
- 52
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 19980210.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 2 | -24 | 7W | 118 | 9W | 1 | 22 |
| 2 | AX – 3 | -14 | 13E | 99 | 11E | 1 | 25 |
| 3 | AX – 2 | -24 | 23E | 89 | 21E | 24 | |
| 4 | CRI – 5 | -40 | 24E | 88 | 22E | 10 | 23 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.