Daily Sunspot Evaluation
Observation Sheet Thursday, 16 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)
- 7
- Number of spots (f)
- 144
- Relative number (R)
- 214
- Observer
- FY
- Reading
- all checks consistent
- File
- 19560216.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | E – 24 | 0.63 | 28 | |
| 2 | C – 12 | 0.74 | 38 | |
| 3 | E – 13 | 0.88 | 42 | |
| 4 | G – 4 | 0.89 | 92 | |
| 5 | F – 34 | 0.6 | 99 | |
| 6 | A – 3 | 0.22 | 185 | |
| 7 | F – 54 | 0.52 | 354 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.