Daily Sunspot Evaluation
Observation Sheet Tuesday, 23 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)
- 10
- Number of spots (f)
- 60
- Relative number (R)
- 160
- Observer
- MH
- Reading
- all checks consistent
- File
- 19581223.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 1 | 19 | 0 | ||||
| 2 | A – 2 | 12 | 20E | ||||
| 3 | ? – 1 | 19 | 82E | ||||
| 4 | ? – 6 | 13 | 74E | ||||
| 5 | E – 28 | -17 | 57E | ||||
| 6 | A – 1 | -22 | 71E | ||||
| 7 | C – 7 | -22 | 18E | ||||
| 8 | B – 5 | -16 | 25W | ||||
| 9 | ? – 1 | 23 | 79W | ||||
| 10 | B – 8 | 9 | 13W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.