Daily Sunspot Evaluation
Observation Sheet Wednesday, 9 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)
- 6
- Number of spots (f)
- 76
- Relative number (R)
- 136
- Observer
- FA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19741009.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 10 | 19E | 290 | 16E | ||
| 2 | E – 41 | 7 | 33E | 296 ⚠ | 30E | ||
| 3 | B – 6 | 4 | 04E | 305 | 01E | ||
| 4 | C – 22 | -18 | 07W | 316 | 10W | ||
| 5 | D – 5 | -6 | 69W | 18 | 72W | ||
| 6 | A – 1 | 9 | 73W | 22 | 76W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.