Daily Sunspot Evaluation
Observation Sheet Saturday, 1 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)
- 13
- Number of spots (f)
- 66
- Relative number (R)
- 196
- Observer
- AB
- Reading
- all checks consistent
- File
- 19580201.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 4 | 26 | 58E | ||||
| 2 | ? – 2 | -11 | 75E | ||||
| 3 | B – 11 | -14 | 66E | ||||
| 4 | B – 4 | -28 | 12E | ||||
| 5 | ? – 3 | -18 | 80W | ||||
| 6 | A – 1 | -9 | 77W | ||||
| 7 | C – 8 | -12 | 53W | ||||
| 8 | E – 16 | -5 | 4W | ||||
| 9 | A – 1 | 18 | 56W | ||||
| 10 | B – 7 | 20 | 31W | ||||
| 11 | J – 4 | 22 | 23W | ||||
| 12 | A – 2 | 15 | 10W | ||||
| 13 | H – 3 | 20 | 6W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.