Daily Sunspot Evaluation
Observation Sheet Wednesday, 11 September 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)
- 9
- Number of spots (f)
- 80
- Relative number (R)
- 170
- Observer
- SM
- Reading
- all checks consistent
- File
- 19680911.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 7 | 6 | 58E | 20 | |||
| 2 | A – 1 | -12 | 67E | 11 | |||
| 3 | H – 27 | -13 | 50E | 28 | |||
| 4 | B – 3 | -22 | 45E | 33 | |||
| 5 | B – 8 | -13 | 06E | 72 | |||
| 6 | B – 13 | -19 | 04W | 82 | |||
| 7 | D – 19 | -21 | 14W | 92 | |||
| 8 | A – 1 | -23 | 39W | 117 | |||
| 9 | J – 1 | -3 | 76W | 154 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.