Daily Sunspot Evaluation
Observation Sheet Thursday, 21 October 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)
- 4
- Number of spots (f)
- 27
- Relative number (R)
- 67
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19931021.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 4 | 6 | 77W | 68 | 79W | 6 | 254 |
| 2 | DAE – 13 | -17 | 01E | 350 | 01W | 6.5 | 256 |
| 3 | CAO – 3 | -9 | 04E | 347 | 02E | 4 | 253 |
| 4 | CRS – 7 | -17 | 18E | 333 | 16E | 4 | 255 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.