Daily Sunspot Evaluation
Observation Sheet Monday, 22 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)
- 42
- Relative number (R)
- 142
- Observer
- SG
- Reading
- all checks consistent
- File
- 19581222.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 7 | 8 | 1E | ||||
| 2 | H – 1 | 19 | 13E | ||||
| 3 | A – 1 | 21 | 24E | ||||
| 4 | B – 3 | 26 | 32E | ||||
| 5 | A – 1 | 12 | 34E | ||||
| 6 | ? – 1 | 12 | 84E | ||||
| 7 | ? – 13 | -17 | 73E | ||||
| 8 | C – 4 | -23 | 32E | ||||
| 9 | B – 8 | -17 | 12W | ||||
| 10 | D – 3 | 22 | 70W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.