Daily Sunspot Evaluation
Observation Sheet Wednesday, 30 July 1975
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)
- 3
- Number of spots (f)
- 11
- Relative number (R)
- 41
- Observer
- FA
- Reading
- all checks consistent
- File
- 19750730.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 4 | 85E | 305 | 82E | ||
| 2 | J – 3 | 9 | 38W | 68 | 41W | ||
| 3 | G – 6 | 10 | 57W | 87 | 60W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.