Daily Sunspot Evaluation
Observation Sheet Sunday, 28 August 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)
- 4
- Number of spots (f)
- 35
- Relative number (R)
- 75
- Observer
- FY
- Reading
- all checks consistent
- File
- 19550828.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | D – 11 | 0.59 | 13 | |
| 2 | D – 16 | 0.28 | 60 | |
| 3 | A – 4 | 0.64 | 73 | |
| 4 | C – 4 | 0.89 | 135 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.