Daily Sunspot Evaluation
Observation Sheet Tuesday, 3 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)
- 5
- Number of spots (f)
- 5
- Relative number (R)
- 55
- Observer
- ET
- Reading
- all checks consistent
- File
- 19510703.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | ? – 1 | 0.97 | 76 | |
| 2 | A – 1 | 0.86 | 80 | |
| 3 | A – 1 | 0.36 | 119 | |
| 4 | A – 1 | 0.17 | 170 | |
| 5 | ? – 1 | 0.97 | 278 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.