Daily Sunspot Evaluation
Observation Sheet Friday, 3 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)
- 10
- Number of spots (f)
- 27
- Relative number (R)
- 127
- Observer
- MH
- Reading
- all checks consistent
- File
- 19570503.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 13 | 63E | ||||
| 2 | D – 9 | -26 | 5E | ||||
| 3 | J – 1 | -20 | 65W | ||||
| 4 | B – 3 | -18 | 75W | ||||
| 5 | A – 1 | -13 | 80W | ||||
| 6 | J – 1 | -12 | 43W | ||||
| 7 | J – 3 | -11 | 76W | ||||
| 8 | J – 1 | -6 | 50W | ||||
| 9 | J – 1 | 24 | 16W | ||||
| 10 | C – 6 | 26 | 6W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.