Daily Sunspot Evaluation
Observation Sheet Wednesday, 2 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)
- 3
- Number of spots (f)
- 31
- Relative number (R)
- 61
- Observer
- FA
- Reading
- all checks consistent
- File
- 19741002.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 11 | 10 | 20E | 22 | 19E | ||
| 2 | D – 10 | -6 | 24E | 18 | 21E | ||
| 3 | B – 10 | -11 | 10W | 52 | 13W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.