Daily Sunspot Evaluation
Observation Sheet Wednesday, 28 September 1955
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)
- 3
- Number of spots (f)
- 19
- Relative number (R)
- 49
- Observer
- KA
- Reading
- all checks consistent
- File
- 19550928.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | A – 1 | 0.44 | 90 | |
| 2 | B – 16 | 0.58 | 129 | |
| 3 | A – 2 | 0.92 | 332 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.