Daily Sunspot Evaluation
Observation Sheet Tuesday, 29 May 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)
- 18
- Relative number (R)
- 68
- Observer
- ET
- Reading
- all checks consistent
- File
- 19510529.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | H – 9 | 0.49 | 43 | |
| 2 | H – 5 | 0.44 | 206 | |
| 3 | A – 1 | 0.87 | 247 | |
| 4 | A – 1 | 0.46 | 248 | |
| 5 | ? – 2 | 0.98 | 272 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.