Daily Sunspot Evaluation
Observation Sheet Tuesday, 21 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)
- 2
- Number of spots (f)
- 31
- Relative number (R)
- 51
- Observer
- WG
- Reading
- all checks consistent
- File
- 19550621.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | A – 7 | 0.37 | 17 | |
| 2 | E – 24 | 0.85 | 233 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.