Daily Sunspot Evaluation
Observation Sheet Wednesday, 28 May 1952
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)
- 29
- Relative number (R)
- 69
- Observer
- ET
- Reading
- all checks consistent
- File
- 19520528.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | A – 2 | 0.33 | 98 | |
| 2 | C – 9 | 0.78 | 229 | |
| 3 | H – 7 | 0.12 | 241 | |
| 4 | B – 11 | 0.65 | 270 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.