Daily Sunspot Evaluation
Observation Sheet Sunday, 8 July 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)
- 24
- Relative number (R)
- 84
- Observer
- MH
- Reading
- all checks consistent
- File
- 19510708.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | C – 6 | 0.25 | 52 | |
| 2 | D – 7 | 0.88 | 81 | |
| 3 | J – 1 | 0.37 | 87 | |
| 4 | ? – 3 | 0.96 | 99 | |
| 5 | B – 5 | 0.75 | 105 | |
| 6 | ? – 2 | 0.93 | 280 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.