Daily Sunspot Evaluation
Observation Sheet Thursday, 30 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)
- 63
- Relative number (R)
- 173
- Observer
- WG
- Reading
- all checks consistent
- File
- 19570530.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 4 | -16 | 68E | ||||
| 2 | H – 6 | -24 | 32E | ||||
| 3 | A – 2 | -22 | 2E | ||||
| 4 | H – 18 | -24 | 7W | ||||
| 5 | B – 6 | -19 | 53W | ||||
| 6 | C – 11 | -14 | 37W | ||||
| 7 | J – 1 | -10 | 57W | ||||
| 8 | ? – 1 | -9 | 80W | ||||
| 9 | B – 6 | 19 | 50W | ||||
| 10 | C – 3 | 15 | 67W | ||||
| 11 | H – 5 | 22 | 35W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.