Daily Sunspot Evaluation
Observation Sheet Wednesday, 9 October 1968
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)
- 61
- Relative number (R)
- 121
- Observer
- SM
- Reading
- all checks consistent
- File
- 19681009.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 13 | -14 | 59E | 9 | |||
| 2 | A – 4 | -13 | 27E | 41 | |||
| 3 | G – 23 | 4 | 39W | 106 | |||
| 4 | B – 4 | 14 | 47W | 115 | |||
| 5 | B – 6 | 17 | 30W | 98 | |||
| 6 | B – 11 | 19 | 19W | 87 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.