Daily Sunspot Evaluation
Observation Sheet Tuesday, 14 May 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)
- 100
- Relative number (R)
- 210
- Observer
- ET
- Reading
- all checks consistent
- File
- 19570514.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 20 | 19E | ||||
| 2 | J – 1 | 18 | 29E | ||||
| 3 | A – 2 | 21 | 71E | ||||
| 4 | E – 14 | -12 | 40E | ||||
| 5 | C – 6 | -15 | 62E | ||||
| 6 | C – 11 | -15 | 48E | ||||
| 7 | ? – 4 | -23 | 77E | ||||
| 8 | E – 17 | -28 | 43W | ||||
| 9 | A – 2 | -18 | 20W | ||||
| 10 | C – 3 | -17 | 72W | ||||
| 11 | E – 39 | 10 | 38W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.