Daily Sunspot Evaluation
Observation Sheet Thursday, 31 May 1956
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)
- 9
- Number of spots (f)
- 70
- Relative number (R)
- 160
- Observer
- AK
- Reading
- all checks consistent
- File
- 19560531.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | E – 28 | 0.75 | 41 | |
| 2 | H – 4 | 0.62 | 47 | |
| 3 | ? – 1 | 0.98 | 49 | |
| 4 | A – 1 | 0.8 | 89 | |
| 5 | C – 5 | 0.43 | 118 | |
| 6 | G – 17 | 0.3 | 129 | |
| 7 | B – 9 | 0.3 | 189 | |
| 8 | ? – 4 | 0.98 | 233 | |
| 9 | A – 1 | 0.91 | 280 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.