Daily Sunspot Evaluation
Observation Sheet Sunday, 29 April 1951
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)
- 38
- Relative number (R)
- 88
- Observer
- WG
- Reading
- all checks consistent
- File
- 19510429.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | A – 1 | 0.53 | 80 | |
| 2 | G – 8 | 0.05 | 135 | |
| 3 | G – 9 | 0.85 | 229 | |
| 4 | D – 12 | 0.28 | 246 | |
| 5 | D – 8 | 0.68 | 275 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.