Daily Sunspot Evaluation
Observation Sheet Sunday, 10 June 1951
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)
- 92
- Relative number (R)
- 142
- Observer
- MH
- Reading
- all checks consistent
- File
- 19510610.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | F – 57 | 0.28 | 36 | |
| 2 | C – 9 | 0.51 | 48 | |
| 3 | D – 10 | 0.67 | 65 | |
| 4 | A – 2 | 0.26 | 236 | |
| 5 | E – 14 | 0.7 | 250 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.