Daily Sunspot Evaluation
Observation Sheet Saturday, 29 April 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)
- 5
- Number of spots (f)
- 91
- Relative number (R)
- 141
- Observer
- AB
- Reading
- all checks consistent
- File
- 19610429.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 28 | 4 | 16E | ||||
| 2 | J – 1 | 13 | 48E | ||||
| 3 | A – 2 | -2 | 10E | ||||
| 4 | E – 59 | -8 | 18E | ||||
| 5 | A – 1 | -11 | 69W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.