Daily Sunspot Evaluation
Observation Sheet Sunday, 2 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)
- 51
- Relative number (R)
- 191
- Observer
- MH
- Reading
- all checks consistent
- File
- 19580202.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 26 | 46E | ||||
| 2 | B – 5 | 10 | 30E | ||||
| 3 | A – 2 | -11 | 61E | ||||
| 4 | D – 12 | -13 | 52E | ||||
| 5 | ? – 3 | -14 | 79E | ||||
| 6 | A – 2 | -31 | 59W | ||||
| 7 | A – 2 | -18 | 65W | ||||
| 8 | A – 1 | -14 | 64W | ||||
| 9 | A – 2 | -10 | 68W | ||||
| 10 | C – 13 | -6 | 17W | ||||
| 11 | A – 2 | 20 | 44W | ||||
| 12 | J – 1 | 22 | 35W | ||||
| 13 | A – 2 | 15 | 23W | ||||
| 14 | J – 2 | 20 | 19W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.