Daily Sunspot Evaluation
Observation Sheet Wednesday, 21 October 1959
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)
- 11
- Number of spots (f)
- 47
- Relative number (R)
- 157
- Observer
- SG
- Reading
- all checks consistent
- File
- 19591021.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 29 | 0 | ||||
| 2 | B – 4 | 10 | 18E | ||||
| 3 | E – 8 | 7 | 67E | ||||
| 4 | H – 8 | 4 | 16E | ||||
| 5 | A – 2 | -19 | 49E | ||||
| 6 | H – 12 | -1 | 3E | ||||
| 7 | A – 2 | -16 | 14E | ||||
| 8 | C – 4 | -13 | 12W | ||||
| 9 | J – 1 | -7 | 72W | ||||
| 10 | H – 2 | 6 | 50W | ||||
| 11 | B – 2 | 17 | 54W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.