Daily Sunspot Evaluation
Observation Sheet Tuesday, 22 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)
- 16
- Number of spots (f)
- 72
- Relative number (R)
- 232
- Observer
- WG
- Reading
- all checks consistent
- File
- 19570122.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 12 | 1E | ||||
| 2 | A – 4 | 16 | 8E | ||||
| 3 | A – 2 | 45 | 27E | ||||
| 4 | A – 2 | 20 | 15E | ||||
| 5 | C – 7 | 10 | 21E | ||||
| 6 | B – 3 | 25 | 27E | ||||
| 7 | J – 1 | 34 | 68E | ||||
| 8 | J – 1 | 23 | 56E | ||||
| 9 | ? – 1 | 23 | 68E | ||||
| 10 | E – 16 | -17 | 30E | ||||
| 11 | A – 2 | -23 | 6W | ||||
| 12 | B – 2 | -22 | 26W | ||||
| 13 | H – 6 | -27 | 46W | ||||
| 14 | A – 1 | -20 | 50W | ||||
| 15 | J – 1 | 14 | 69W | ||||
| 16 | H – 21 | 17 | 3W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.