Daily Sunspot Evaluation
Observation Sheet Tuesday, 4 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)
- 10
- Number of spots (f)
- 73
- Relative number (R)
- 173
- Observer
- AK
- Reading
- all checks consistent
- File
- 19580204.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 4 | 11 | 1E | ||||
| 2 | A – 2 | 27 | 18E | ||||
| 3 | A – 4 | 19 | 50E | ||||
| 4 | H – 9 | -14 | 50E | ||||
| 5 | D – 17 | -18 | 65E | ||||
| 6 | J – 2 | -11 | 32E | ||||
| 7 | E – 27 | -13 | 23E | ||||
| 8 | C – 5 | -6 | 47W | ||||
| 9 | A – 1 | 22 | 64W | ||||
| 10 | J – 2 | 21 | 48W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.