Daily Sunspot Evaluation
Observation Sheet Thursday, 29 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)
- 5
- Number of spots (f)
- 27
- Relative number (R)
- 77
- Observer
- WG
- Reading
- all checks consistent
- File
- 19510329.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | B – 8 | 0.3 | 90 | |
| 2 | J – 1 | 0.92 | 250 | |
| 3 | A – 1 | 0.95 | 255 | |
| 4 | ? – 3 | 0.99 | 256 | |
| 5 | C – 14 | 0.82 | 297 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.