Daily Sunspot Evaluation
Observation Sheet Friday, 15 June 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)
- 47
- Relative number (R)
- 137
- Observer
- FY
- Reading
- all checks consistent
- File
- 19560615.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | D – 9 | 0.63 | 27 | |
| 2 | C – 8 | 0.51 | 32 | |
| 3 | D – 12 | 0.85 | 57 | |
| 4 | H – 4 | 0.94 | 99 | |
| 5 | J – 1 | 0.8 | 114 | |
| 6 | B – 4 | 0.56 | 132 | |
| 7 | A – 1 | 0.63 | 195 | |
| 8 | A – 7 | 0.64 | 217 | |
| 9 | A – 1 | 0.46 | 358 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.