Daily Sunspot Evaluation
Observation Sheet Friday, 10 January 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)
- 16
- Number of spots (f)
- 97
- Relative number (R)
- 257
- Observer
- ET
- Reading
- all checks consistent
- File
- 19580110.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 4 | 26 | 30E | ||||
| 2 | B – 7 | 25 | 47E | ||||
| 3 | J – 4 | 29 | 60E | ||||
| 4 | ? – 1 | -5 | 80E | ||||
| 5 | A – 2 | -15 | 51E | ||||
| 6 | J – 1 | -23 | 64E | ||||
| 7 | C – 5 | -20 | 41E | ||||
| 8 | E – 29 | -14 | 17E | ||||
| 9 | D – 8 | -18 | 16E | ||||
| 10 | E – 12 | -29 | 2E | ||||
| 11 | D – 7 | -39 | 22W | ||||
| 12 | A – 1 | -11 | 12W | ||||
| 13 | B – 3 | -19 | 40W | ||||
| 14 | G – 5 | 10 | 41W | ||||
| 15 | D – 5 | 17 | 42W | ||||
| 16 | B – 3 | 34 | 15W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.