Daily Sunspot Evaluation
Observation Sheet Friday, 8 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)
- 6
- Number of spots (f)
- 128
- Relative number (R)
- 188
- Observer
- ET
- Reading
- all checks consistent
- File
- 19510608.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | C – 9 | 0.69 | 53 | |
| 2 | C – 8 | 0.83 | 59 | |
| 3 | F – 58 | 0.68 | 62 | |
| 4 | G – 4 | 0.94 | 68 | |
| 5 | B – 7 | 0.21 | 187 | |
| 6 | E – 42 | 0.28 | 223 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.