Daily Sunspot Evaluation
Observation Sheet Tuesday, 12 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)
- 3
- Number of spots (f)
- 6
- Relative number (R)
- 36
- Observer
- SB0
- Reading
- all checks consistent
- File
- 19990112.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 9 | 53E | 304 | 2 | ||
| 2 | AX – 4 | -20 | 18E | 339 | 2.5 | ||
| 3 | ? – 1 | -22 | 85E | 271 | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.