Daily Sunspot Evaluation
Observation Sheet Friday, 13 January 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)
- 41
- Relative number (R)
- 111
- Observer
- WG
- Reading
- all checks consistent
- File
- 19560113.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | J – 1 | 0.98 | 56 | |
| 2 | ? – 1 | 0.99 | 62 | |
| 3 | J – 2 | 0.56 | 137 | |
| 4 | D – 24 | 0.41 | 208 | |
| 5 | A – 3 | 0.83 | 241 | |
| 6 | B – 7 | 0.57 | 243 | |
| 7 | J – 3 | 0.49 | 331 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.