Daily Sunspot Evaluation
Observation Sheet Tuesday, 19 January 1988
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)
- 40
- Relative number (R)
- 80
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19880119.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 2 | -35 | 23W | 40 | 25W | 1.5 | 10 |
| 2 | CAI – 12 | -38 | 12W | 29 | 14W | 11 | 11 |
| 3 | DKI – 22 | -20 | 08E | 9 | 06E | 13.5 | 12 |
| 4 | CSO – 4 | -31 | 31E | 346 | 29E | 5.5 | 14 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.