Daily Sunspot Evaluation
Observation Sheet Sunday, 31 January 1993
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)
- 19
- Relative number (R)
- 49
- Observer
- TA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19930131.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | -14 | 8W | 310 ⚠ | 8W | - | 19 |
| 2 | CSO – 6 | -12 | 70W | 294 | 7W | 7 | 27 |
| 3 | CAI – 12 | -16 | 3E | 188 ⚠ | 3E | 6 | 26 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.