Daily Sunspot Evaluation
Observation Sheet Sunday, 26 April 1953
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)
- 4
- Number of spots (f)
- 38
- Relative number (R)
- 78
- Observer
- AK
- Reading
- all checks consistent
- File
- 19530426.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | E – 34 | 0.52 | 37 | |
| 2 | ? – 1 | 0.97 | 61 | |
| 3 | A – 2 | 0.66 | 70 | |
| 4 | J – 1 | 0.72 | 73 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.