Daily Sunspot Evaluation
Observation Sheet Thursday, 30 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)
- 10
- Number of spots (f)
- 43
- Relative number (R)
- 143
- Observer
- WG
- Reading
- all checks consistent
- File
- 19580130.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 3 | 23 | 3E | ||||
| 2 | J – 3 | 19 | 19E | ||||
| 3 | A – 1 | 15 | 17E | ||||
| 4 | C – 3 | -27 | 35E | ||||
| 5 | D – 18 | -10 | 28W | ||||
| 6 | C – 4 | -18 | 55W | ||||
| 7 | J – 1 | -9 | 52W | ||||
| 8 | J – 1 | 18 | 31W | ||||
| 9 | G – 2 | 24 | 22W | ||||
| 10 | C – 7 | 20 | 7W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.