Daily Sunspot Evaluation
Observation Sheet Saturday, 21 February 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)
- 14
- Number of spots (f)
- 80
- Relative number (R)
- 220
- Observer
- SG
- Reading
- all checks consistent
- File
- 19590221.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 28 | 18 | 0 | ||||
| 2 | H – 3 | 11 | 9E | ||||
| 3 | H – 5 | 22 | 41E | ||||
| 4 | A – 2 | 16 | 47E | ||||
| 5 | ? – 1 | 20 | 71E | ||||
| 6 | A – 2 | 5 | 59E | ||||
| 7 | A – 1 | -34 | 63E | ||||
| 8 | A – 1 | -16 | 3E | ||||
| 9 | B – 3 | -35 | 60W | ||||
| 10 | H – 3 | 8 | 73W | ||||
| 11 | C – 4 | 11 | 35W | ||||
| 12 | A – 1 | 16 | 34W | ||||
| 13 | E – 12 | 10 | 20W | ||||
| 14 | D – 14 | 27 | 35W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.