Daily Sunspot Evaluation
Observation Sheet Tuesday, 28 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)
- 2
- Number of spots (f)
- 130
- Relative number (R)
- 150
- Observer
- TK
- Reading
- all checks consistent
- File
- 19931228.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FAC – 90 | 9 | 26W | 201 | 28W | 24 | 289 |
| 2 | ESI – 40 | 6 | 16W | 191 | 18W | 14 | 288 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.