Daily Sunspot Evaluation
Observation Sheet Friday, 30 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)
- 3
- Number of spots (f)
- 10
- Relative number (R)
- 40
- Observer
- HE
- Reading
- all checks consistent
- File
- 19980130.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 3 | 16 | 10W | 265 | 10W | 1 | 16 |
| 2 | BXO – 3 | 28 | 07W | 262 | 07W | 3 | 17 |
| 3 | CSO – 4 | -35 | 28W | 283 | 28W | 9 | 20 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.