Daily Sunspot Evaluation
Observation Sheet Thursday, 10 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)
- 4
- Number of spots (f)
- 36
- Relative number (R)
- 76
- Observer
- AT
- Reading
- all checks consistent
- File
- 19681010.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 17 | -13 | 46E | 9 | |||
| 2 | B – 2 | -11 | 35W | 90 | |||
| 3 | H – 13 | 4 | 53W | 108 | |||
| 4 | C – 4 | 17 | 33W | 88 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.