Daily Sunspot Evaluation
Observation Sheet Saturday, 23 March 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)
- 11
- Number of spots (f)
- 114
- Relative number (R)
- 224
- Observer
- KA
- Reading
- all checks consistent
- File
- 19570323.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 3 | 39 | 30E | ||||
| 2 | B – 4 | 27 | 31E | ||||
| 3 | ? – 4 | 32 | 68E | ||||
| 4 | C – 12 | 10 | 71E | ||||
| 5 | F – 39 | -14 | 40E | ||||
| 6 | B – 4 | -18 | 68E | ||||
| 7 | E – 42 | -16 | 4E | ||||
| 8 | A – 1 | -24 | 56W | ||||
| 9 | ? – 2 | 13 | 74W | ||||
| 10 | A – 1 | 20 | 20W | ||||
| 11 | J – 2 | 34 | 9W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.