Daily Sunspot Evaluation
Observation Sheet Thursday, 28 August 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)
- 6
- Number of spots (f)
- 55
- Relative number (R)
- 115
- Observer
- ET
- Reading
- all checks consistent
- File
- 19520828.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | D – 14 | 0.88 | 109 | |
| 2 | D – 14 | 0.88 | 113 | |
| 3 | G – 11 | 0.35 | 139 | |
| 4 | A – 4 | 0.29 | 293 | |
| 5 | H – 7 | 0.48 | 297 | |
| 6 | A – 5 | 0.3 | 307 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.