Daily Sunspot Evaluation
Observation Sheet Wednesday, 22 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)
- 12
- Number of spots (f)
- 89
- Relative number (R)
- 209
- Observer
- ET
- Reading
- all checks consistent
- File
- 19570522.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 1 | 21 | 66E | ||||
| 2 | D – 14 | 14 | 31E | ||||
| 3 | C – 11 | -11 | 50E | ||||
| 4 | C – 6 | -10 | 24E | ||||
| 5 | A – 2 | -21 | 51E | ||||
| 6 | B – 8 | -17 | 3W | ||||
| 7 | A – 5 | -22 | 33W | ||||
| 8 | B – 8 | -12 | 26W | ||||
| 9 | D – 18 | -17 | 45W | ||||
| 10 | J – 1 | -14 | 51W | ||||
| 11 | J – 3 | -12 | 66W | ||||
| 12 | E – 12 | 8 | 22W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.