Daily Sunspot Evaluation
Observation Sheet Saturday, 22 February 1958
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)
- 94
- Relative number (R)
- 234
- Observer
- AB
- Reading
- all checks consistent
- File
- 19580222.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 4 | 12 | 0 | ||||
| 2 | A – 3 | -9 | 31E | ||||
| 3 | E – 21 | -13 | 21E | ||||
| 4 | A – 1 | -9 | 5E | ||||
| 5 | A – 4 | -31 | 43E | ||||
| 6 | H – 1 | -24 | 12E | ||||
| 7 | G – 31 | -16 | 1E | ||||
| 8 | B – 11 | -22 | 12W | ||||
| 9 | A – 1 | -15 | 22W | ||||
| 10 | A – 1 | -15 | 60W | ||||
| 11 | C – 12 | -4 | 27W | ||||
| 12 | A – 1 | 6 | 53W | ||||
| 13 | A – 1 | -11 | 53W | ||||
| 14 | J – 2 | 24 | 58W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.