Daily Sunspot Evaluation
Observation Sheet Wednesday, 31 December 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)
- 12
- Number of spots (f)
- 118
- Relative number (R)
- 238
- Observer
- ET
- Reading
- all checks consistent
- File
- 19581231.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 10 | 21 | 48E | ||||
| 2 | J – 2 | -4 | 10E | ||||
| 3 | A – 1 | -10 | 42E | ||||
| 4 | A – 4 | -13 | 50E | ||||
| 5 | A – 4 | -18 | 50E | ||||
| 6 | F – 44 | -18 | 50W | ||||
| 7 | B – 4 | -12 | 37W | ||||
| 8 | ? – 3 | 10 | 67W | ||||
| 9 | C – 3 | 18 | 59W | ||||
| 10 | E – 22 | 13 | 37W | ||||
| 11 | H – 6 | 7 | 8W | ||||
| 12 | B – 15 | 18 | 14W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.