Daily Sunspot Evaluation
Observation Sheet Monday, 20 December 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)
- 4
- Relative number (R)
- 34
- Observer
- MB
- Reading
- all checks consistent
- File
- 19931220.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 0 | 07E | 273 | 05E | 1 | |
| 2 | ? – 2 | 9 | 79E | 201 | 77E | 5 | |
| 3 | ? – 1 | 4 | 82E | 198 | 80E | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.