Daily Sunspot Evaluation
Observation Sheet Friday, 1 August 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)
- 2
- Number of spots (f)
- 21
- Relative number (R)
- 41
- Observer
- FA
- Reading
- all checks consistent
- File
- 19750801.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 19 | 5 | 53°E | 309 | 51°E | ||
| 2 | A – 2 | 8 | 68W | 70 | 70°W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.