Daily Sunspot Evaluation
Observation Sheet Saturday, 27 January 1951
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)
- 6
- Number of spots (f)
- 120
- Relative number (R)
- 180
- Observer
- WG
- Reading
- all checks consistent
- File
- 19510127.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | D – 30 | 0.29 | 21 | |
| 2 | J – 1 | 0.92 | 50 | |
| 3 | ? – 1 | 0.98 | 53 | |
| 4 | F – 68 | 0.48 | 54 | |
| 5 | D – 16 | 0.24 | 99 | |
| 6 | B – 4 | 0.12 | 195 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.