Daily Sunspot Evaluation
Observation Sheet Saturday, 4 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)
- 29
- Relative number (R)
- 79
- Observer
- WG
- Reading
- all checks consistent
- File
- 19510804.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | ? – 4 | 0.98 | 95 | |
| 2 | B – 16 | 0.55 | 97 | |
| 3 | J – 1 | 0.97 | 111 | |
| 4 | B – 6 | 0.62 | 258 | |
| 5 | ? – 2 | 0.98 | 278 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.