Daily Sunspot Evaluation
Observation Sheet Friday, 3 February 1961
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)
- 4
- Number of spots (f)
- 9
- Relative number (R)
- 49
- Observer
- BG
- Reading
- all checks consistent
- File
- 19610203.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 3 | -8 | 40E | ||||
| 2 | D – 2 | -16 | 31E | ||||
| 3 | J – 1 | 8 | 47W | ||||
| 4 | C – 3 | 23 | 4W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.