Daily Sunspot Evaluation
Observation Sheet Wednesday, 10 April 1963
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)
- 12
- Relative number (R)
- 72
- Observer
- AÖ
- Reading
- all checks consistent
- File
- 19630410.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 3 | -9 | 63E | 4466 | |||
| 2 | D – 4 | -18 | 63E | ||||
| 3 | A – 2 | 2 | 66W | ||||
| 4 | A – 1 | 17 | 42W | ||||
| 5 | A – 1 | 13 | 31W | ||||
| 6 | J – 1 | 17 | 33W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.