Daily Sunspot Evaluation
Observation Sheet Thursday, 13 January 1955
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)
- 2
- Number of spots (f)
- 22
- Relative number (R)
- 42
- Observer
- WG
- Reading
- all checks consistent
- File
- 19550113.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | J – 2 | 0.94 | 290 | |
| 2 | H – 20 | 0.63 | 357 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.