Daily Sunspot Evaluation
Observation Sheet Wednesday, 4 April 1956
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)
- 10
- Relative number (R)
- 60
- Observer
- WG
- Reading
- all checks consistent
- File
- 19560404.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | B – 3 | 0.87 | 21 | |
| 2 | B – 3 | 0.78 | 79 | |
| 3 | A – 2 | 0.65 | 216 | |
| 4 | A – 1 | 0.89 | 228 | |
| 5 | ? – 1 | 0.99 | 272 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.