Daily Sunspot Evaluation
Observation Sheet Thursday, 14 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)
- 12
- Number of spots (f)
- 65
- Relative number (R)
- 185
- Observer
- AK
- Reading
- all checks consistent
- File
- 19570314.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 15 | 24E | ||||
| 2 | J – 3 | 10 | 42E | ||||
| 3 | A – 1 | -22 | 52E | ||||
| 4 | C – 11 | -24 | 63E | ||||
| 5 | E – 23 | -21 | 23E | ||||
| 6 | A – 2 | -38 | 28E | ||||
| 7 | C – 4 | -38 | 18E | ||||
| 8 | B – 4 | -19 | 10W | ||||
| 9 | A – 1 | -26 | 26W | ||||
| 10 | C – 7 | -18 | 18W | ||||
| 11 | B – 5 | 14 | 24W | ||||
| 12 | B – 3 | 17 | 10W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.