Daily Sunspot Evaluation
Observation Sheet Friday, 10 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)
- 6
- Number of spots (f)
- 119
- Relative number (R)
- 179
- Observer
- ET
- Reading
- all checks consistent
- File
- 19510810.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | D – 44 | 0.11 | 33 | |
| 2 | C – 23 | 0.74 | 128 | |
| 3 | H – 15 | 0.26 | 210 | |
| 4 | A – 1 | 0.11 | 259 | |
| 5 | D – 30 | 0.72 | 289 | |
| 6 | J – 6 | 0.18 | 292 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.