Daily Sunspot Evaluation
Observation Sheet Sunday, 29 January 1961
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)
- 6
- Number of spots (f)
- 80
- Relative number (R)
- 140
- Observer
- AB
- Reading
- all checks consistent
- File
- 19610129.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 2 | 23 | 61E | ||||
| 2 | E – 40 | 10 | 28E | ||||
| 3 | A – 2 | -13 | 10E | ||||
| 4 | B – 9 | -6 | 50W | ||||
| 5 | E – 24 | 7 | 38W | ||||
| 6 | A – 3 | 18 | 1W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.