Daily Sunspot Evaluation
Observation Sheet Wednesday, 5 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)
- 6
- Number of spots (f)
- 56
- Relative number (R)
- 116
- Observer
- PO
- Reading
- all checks consistent
- File
- 19610405.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 13 | 14 | 12E | ||||
| 2 | J – 2 | -3 | 51E | ||||
| 3 | B – 16 | -16 | 21W | ||||
| 4 | B – 6 | -18 | 30W | ||||
| 5 | J – 4 | -18 | 48W | ||||
| 6 | D – 15 | -7 | 32W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.