Daily Sunspot Evaluation
Observation Sheet Wednesday, 15 February 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)
- 135
- Relative number (R)
- 225
- Observer
- KA
- Reading
- all checks consistent
- File
- 19560215.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | F – 55 | 0.59 | 14 | |
| 2 | F – 17 | 0.76 | 39 | |
| 3 | ? – 1 | 0.97 | 43 | |
| 4 | C – 17 | 0.92 | 47 | |
| 5 | ? – 6 | 0.76 | 93 | |
| 6 | E – 32 | 0.75 | 94 | |
| 7 | A – 4 | 0.25 | 130 | |
| 8 | A – 1 | 0.58 | 237 | |
| 9 | B – 2 | 0.86 | 287 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.