Daily Sunspot Evaluation
Observation Sheet Wednesday, 26 September 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)
- 4
- Number of spots (f)
- 31
- Relative number (R)
- 71
- Observer
- MH
- Reading
- all checks consistent
- File
- 19510926.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | A – 1 | 0.96 | 127 | |
| 2 | D – 20 | 0.6 | 301 | |
| 3 | A – 1 | 0.46 | 304 | |
| 4 | G – 9 | 0.75 | 312 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.