Daily Sunspot Evaluation
Observation Sheet Thursday, 10 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)
- 90
- Relative number (R)
- 120
- Observer
- FA
- Reading
- all checks consistent
- File
- 19741010.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 62 | 7 | 20E | 276 | 18E | ||
| 2 | C – 26 | -18 | 21W | 317 | 23W | ||
| 3 | ? – 2 | -7 | 78W | 14 | 81W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.