Daily Sunspot Evaluation
Observation Sheet Tuesday, 21 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)
- 6
- Relative number (R)
- 36
- Observer
- TK
- Reading
- all checks consistent
- File
- 19931221.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 0 | 08W | 275 | 11W | 1 | 285 |
| 2 | DAO – 3 | 110 | 67E | 201 | 64E | 9 | 289 |
| 3 | EAO – 2 | 106 | 75E | 193 | 72E | 12 | 288 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.