Daily Sunspot Evaluation
Observation Sheet Wednesday, 11 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)
- 12
- Number of spots (f)
- 71
- Relative number (R)
- 191
- Observer
- WG
- Reading
- all checks consistent
- File
- 19560411.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | B – 3 | 0.69 | 20 | |
| 2 | J – 1 | 0.71 | 27 | |
| 3 | ? – 1 | 0.99 | 42 | |
| 4 | C – 5 | 0.87 | 44 | |
| 5 | B – 9 | 0.83 | 83 | |
| 6 | J – 1 | 0.61 | 90 | |
| 7 | H – 11 | 0.9 | 95 | |
| 8 | A – 2 | 0.55 | 218 | |
| 9 | A – 3 | 0.82 | 289 | |
| 10 | A – 1 | 0.49 | 304 | |
| 11 | J – 5 | 0.75 | 304 | |
| 12 | E – 29 | 0.48 | 330 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.