Daily Sunspot Evaluation
Observation Sheet Sunday, 3 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)
- 8
- Number of spots (f)
- 17
- Relative number (R)
- 97
- Observer
- MH
- Reading
- all checks consistent
- File
- 19570203.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 4 | 18 | 28E | ||||
| 2 | A – 1 | -18 | 59E | ||||
| 3 | A – 1 | -22 | 59E | ||||
| 4 | J – 1 | -19 | 21E | ||||
| 5 | B – 4 | -16 | 13E | ||||
| 6 | A – 4 | -24 | 17E | ||||
| 7 | J – 1 | -21 | 64W | ||||
| 8 | J – 1 | 15 | 45W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.