Daily Sunspot Evaluation
Observation Sheet Monday, 4 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)
- 12
- Number of spots (f)
- 32
- Relative number (R)
- 152
- Observer
- WG
- Reading
- all checks consistent
- File
- 19570204.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 5 | 17 | 13E | ||||
| 2 | A – 1 | -15 | 55E | ||||
| 3 | B – 4 | -17 | 45E | ||||
| 4 | C – 5 | -22 | 46E | ||||
| 5 | J – 1 | -24 | 79E | ||||
| 6 | A – 2 | -25 | 16E | ||||
| 7 | H – 6 | -19 | 8E | ||||
| 8 | B – 2 | -23 | 3E | ||||
| 9 | B – 3 | -17 | 0 | ||||
| 10 | A – 1 | -21 | 1W | ||||
| 11 | J – 1 | -20 | 77W | ||||
| 12 | J – 1 | 15 | 59W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.