Daily Sunspot Evaluation
Observation Sheet Friday, 27 June 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)
- 5
- Number of spots (f)
- 23
- Relative number (R)
- 73
- Observer
- AK
- Reading
- all checks consistent
- File
- 19520627.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | B – 2 | 0.56 | 64 | |
| 2 | A – 1 | 0.61 | 67 | |
| 3 | H – 18 | 0.48 | 111 | |
| 4 | ? – 1 | 0.97 | 243 | |
| 5 | J – 1 | 0.31 | 321 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.