Daily Sunspot Evaluation
Observation Sheet Saturday, 30 January 1999
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)
- 2
- Number of spots (f)
- 10
- Relative number (R)
- 30
- Observer
- HE
- Reading
- all checks consistent
- File
- 19990130.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ORO – 2 | 29 | 68W | 186 | 69W | 4 | |
| 2 | OSI – 8 | 19 | 53W | 171 | 54W | 8 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.