Daily Sunspot Evaluation
Observation Sheet Sunday, 8 April 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)
- 6
- Number of spots (f)
- 38
- Relative number (R)
- 98
- Observer
- WG
- Reading
- all checks consistent
- File
- 19510408.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | B – 3 | 0.86 | 63 | |
| 2 | B – 5 | 0.62 | 71 | |
| 3 | C – 7 | 0.44 | 75 | |
| 4 | A – 1 | 0.71 | 222 | |
| 5 | E – 21 | 0.58 | 277 | |
| 6 | C – 1 | 0.32 | 333 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.