Daily Sunspot Evaluation
Observation Sheet Sunday, 10 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)
- 13
- Number of spots (f)
- 86
- Relative number (R)
- 216
- Observer
- ET
- Reading
- all checks consistent
- File
- 19570310.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 17 | 26E | ||||
| 2 | B – 6 | 13 | 28E | ||||
| 3 | C – 8 | -18 | 20E | ||||
| 4 | B – 18 | -17 | 34E | ||||
| 5 | B – 8 | -17 | 42E | ||||
| 6 | A – 2 | -20 | 77E | ||||
| 7 | C – 3 | -22 | 52E | ||||
| 8 | C – 13 | -25 | 25E | ||||
| 9 | C – 7 | -25 | 12E | ||||
| 10 | ? – 7 | -38 | 74E | ||||
| 11 | A – 5 | -27 | 1E | ||||
| 12 | A – 2 | -19 | 48W | ||||
| 13 | C – 6 | -12 | 47W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.