Daily Sunspot Evaluation
Observation Sheet Tuesday, 13 January 1959
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)
- 7
- Number of spots (f)
- 42
- Relative number (R)
- 112
- Observer
- MH
- Reading
- all checks consistent
- File
- 19590113.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 11 | 22 | 30E | ||||
| 2 | ? – 1 | -6 | 70E | ||||
| 3 | A – 1 | -12 | 53W | ||||
| 4 | ? – 1 | -7 | 78W | ||||
| 5 | B – 7 | -4 | 47W | ||||
| 6 | ? – 2 | 20 | 73W | ||||
| 7 | E – 19 | 12 | 33W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.