Daily Sunspot Evaluation
Observation Sheet Thursday, 23 September 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)
- 11
- Relative number (R)
- 31
- Observer
- MB
- Reading
- all checks consistent
- File
- 19930923.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 3 | -2 | 11E | 350 | 08E | 1 | 239 |
| 2 | BXI – 8 | -7 | 22E | 339 | 19E | 4 | 238 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.