Daily Sunspot Evaluation
Observation Sheet Saturday, 10 August 1974
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)
- 4
- Number of spots (f)
- 14
- Relative number (R)
- 54
- Observer
- ED
- Reading
- all checks consistent
- File
- 19740810.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 9 | 71E | 311 | |||
| 2 | B – 5 | -8 | 44E | 338 | |||
| 3 | G – 4 | -7 | 16E | 6 | |||
| 4 | H – 4 | -10 | 05E | 17 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.