Daily Sunspot Evaluation
Observation Sheet Saturday, 2 February 1957
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)
- 5
- Number of spots (f)
- 17
- Relative number (R)
- 67
- Observer
- WG
- Reading
- all checks consistent
- File
- 19570202.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 6 | 17 | 40E | ||||
| 2 | H – 4 | -20 | 34E | ||||
| 3 | A – 2 | -23 | 29E | ||||
| 4 | J – 1 | -20 | 52W | ||||
| 5 | C – 4 | 14 | 30W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.