Daily Sunspot Evaluation
Observation Sheet Wednesday, 23 January 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)
- 13
- Number of spots (f)
- 72
- Relative number (R)
- 202
- Observer
- AK
- Reading
- all checks consistent
- File
- 19570123.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 25 | 13E | ||||
| 2 | J – 1 | 34 | 55E | ||||
| 3 | J – 1 | 24 | 42E | ||||
| 4 | A – 3 | 25 | 55E | ||||
| 5 | J – 2 | -19 | 80E | ||||
| 6 | E – 13 | -16 | 18E | ||||
| 7 | A – 2 | -24 | 19W | ||||
| 8 | C – 7 | -28 | 58W | ||||
| 9 | A – 1 | -20 | 65W | ||||
| 10 | A – 1 | 10 | 75W | ||||
| 11 | D – 8 | 11 | 11W | ||||
| 12 | H – 24 | 17 | 16W | ||||
| 13 | C – 8 | 11 | 1W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.