Daily Sunspot Evaluation
Observation Sheet Friday, 19 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)
- 5
- Number of spots (f)
- 52
- Relative number (R)
- 102
- Observer
- SG
- Reading
- all checks consistent
- File
- 19581219.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 4 | 19 | 39E | ||||
| 2 | ? – 4 | -23 | 69E | ||||
| 3 | D – 19 | -15 | 28E | ||||
| 4 | A – 2 | 6 | 56W | ||||
| 5 | E – 23 | 22 | 30W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.