Daily Sunspot Evaluation
Observation Sheet Thursday, 3 October 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)
- 18
- Relative number (R)
- 58
- Observer
- FA
- Reading
- all checks consistent
- File
- 19741003.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 5 | 10 | 07E | 22 | 04E | ||
| 2 | ? – 1 | 5 | 85E | 304 | 82E | ||
| 3 | D – 9 | -6 | 11E | 18 | 08E | ||
| 4 | A – 3 | -12 | 27W | 56 | 30W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.