Daily Sunspot Evaluation
Observation Sheet Sunday, 19 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)
- 8
- Number of spots (f)
- 167
- Relative number (R)
- 247
- Observer
- WG
- Reading
- all checks consistent
- File
- 19560219.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | F – 32 | 0.56 | 8 | |
| 2 | ? – 1 | 0.98 | 46 | |
| 3 | A – 1 | 0.95 | 91 | |
| 4 | G – 8 | 0.46 | 104 | |
| 5 | F – 25 | 0.27 | 170 | |
| 6 | A – 1 | 0.7 | 231 | |
| 7 | F – 98 | 0.54 | 307 | |
| 8 | A – 1 | 0.6 | 340 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.