Daily Sunspot Evaluation
Observation Sheet Sunday, 21 October 1956
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)
- 8
- Number of spots (f)
- 68
- Relative number (R)
- 148
- Observer
- KA
- Reading
- all checks consistent
- File
- 19561021.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 23 | 4E | ||||
| 2 | B – 5 | 15 | 8E | ||||
| 3 | A – 1 | 31 | 68E | ||||
| 4 | E – 26 | 16 | 38E | ||||
| 5 | ? – 1 | -29 | 38E | ||||
| 6 | C – 9 | -45 | 28E | ||||
| 7 | D – 14 | -10 | 39W | ||||
| 8 | D – 9 | 16 | 55W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.