Daily Sunspot Evaluation
Observation Sheet Saturday, 22 September 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)
- 16
- Number of spots (f)
- 31
- Relative number (R)
- 191
- Observer
- FY
- Reading
- all checks consistent
- File
- 19560922.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | J – 1 | 26 | 6 | |
| 2 | A – 1 | 12 | 5 | |
| 3 | J – 1 | 22 | 57 | |
| 4 | A – 1 | -12 | 11 | |
| 5 | H – 3 | -23 | 15 | |
| 6 | A – 1 | -30 | 47 | |
| 7 | A – 1 | -24 | 68 | |
| 8 | C – 9 | -16 | 40 | |
| 9 | ? – 1 | -17 | 80 | |
| 10 | A – 1 | 11 | 74 | |
| 11 | ? – 2 | 20 | 78 | |
| 12 | J – 1 | 25 | 45 | |
| 13 | J – 2 | 22 | 14 | |
| 14 | J – 2 | 30 | 16 | |
| 15 | J – 2 | 23 | 5 | |
| 16 | J – 2 | 12 | 1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.