Daily Sunspot Evaluation
Observation Sheet Wednesday, 1 August 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)
- 3
- Number of spots (f)
- 23
- Relative number (R)
- 53
- Observer
- MH
- Reading
- all checks consistent
- File
- 19510801.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | C – 12 | 0.27 | 175 | |
| 2 | C – 9 | 0.61 | 269 | |
| 3 | A – 2 | 0.9 | 271 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.