Daily Sunspot Evaluation
Observation Sheet Monday, 11 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)
- 4
- Number of spots (f)
- 61
- Relative number (R)
- 101
- Observer
- MH
- Reading
- all checks consistent
- File
- 19510611.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | C – 8 | 0.36 | 34 | |
| 2 | G – 6 | 0.53 | 61 | |
| 3 | D – 5 | 0.83 | 251 | |
| 4 | F – 42 | 0.17 | 350 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.