Daily Sunspot Evaluation
Observation Sheet Tuesday, 6 March 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)
- 16
- Relative number (R)
- 56
- Observer
- ET
- Reading
- all checks consistent
- File
- 19510306.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | ? – 2 | 0.98 | 51 | |
| 2 | A – 2 | 0.88 | 53 | |
| 3 | B – 6 | 0.62 | 234 | |
| 4 | B – 6 | 0.67 | 274 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.