Daily Sunspot Evaluation
Observation Sheet Thursday, 23 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)
- 81
- Relative number (R)
- 171
- Observer
- AK
- Reading
- all checks consistent
- File
- 19560223.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | C – 15 | 0.64 | 18 | |
| 2 | C – 7 | 0.79 | 31 | |
| 3 | A – 1 | 0.96 | 84 | |
| 4 | D – 7 | 0.81 | 100 | |
| 5 | A – 2 | 0.4 | 105 | |
| 6 | G – 2 | 0.53 | 226 | |
| 7 | E – 11 | 0.8 | 228 | |
| 8 | E – 17 | 0.93 | 275 | |
| 9 | E – 19 | 0.73 | 291 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.