Daily Sunspot Evaluation
Observation Sheet Sunday, 16 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)
- 4
- Number of spots (f)
- 45
- Relative number (R)
- 85
- Observer
- AK
- Reading
- all checks consistent
- File
- 19530816.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | E – 35 | 0.21 | 81 | |
| 2 | A – 3 | 0.38 | 145 | |
| 3 | C – 4 | 0.26 | 162 | |
| 4 | C – 3 | 0.3 | 296 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.