Daily Sunspot Evaluation
Observation Sheet Thursday, 2 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)
- 5
- Number of spots (f)
- 26
- Relative number (R)
- 76
- Observer
- WG
- Reading
- all checks consistent
- File
- 19510802.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | A – 2 | 0.55 | 81 | |
| 2 | A – 1 | 0.84 | 98 | |
| 3 | C – 10 | 0.29 | 220 | |
| 4 | C – 10 | 0.78 | 272 | |
| 5 | A – 3 | 0.05 | 353 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.