Daily Sunspot Evaluation
Observation Sheet Tuesday, 11 August 1953
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)
- 33
- Relative number (R)
- 93
- Observer
- WG
- Reading
- all checks consistent
- File
- 19530811.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | ? – 5 | 0.97 | 95 | |
| 2 | J – 1 | 0.73 | 98 | |
| 3 | ? – 1 | 0.97 | 113 | |
| 4 | A – 1 | 0.87 | 294 | |
| 5 | C – 12 | 0.73 | 301 | |
| 6 | C – 13 | 0.58 | 303 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.