Daily Sunspot Evaluation
Observation Sheet Sunday, 12 June 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)
- 22
- Relative number (R)
- 52
- Observer
- ET
- Reading
- all checks consistent
- File
- 19550612.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | B – 7 | 0.82 | 54 | |
| 2 | C – 11 | 0.89 | 105 | |
| 3 | B – 4 | 0.45 | 159 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.