Daily Sunspot Evaluation
Observation Sheet Thursday, 26 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)
- 4
- Number of spots (f)
- 24
- Relative number (R)
- 64
- Observer
- WG
- Reading
- all checks consistent
- File
- 19510726.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | C – 8 | 0.42 | 124 | |
| 2 | B – 5 | 0.23 | 156 | |
| 3 | B – 9 | 0.26 | 262 | |
| 4 | J – 2 | 0.58 | 263 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.