Daily Sunspot Evaluation
Observation Sheet Wednesday, 7 February 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)
- 48
- Relative number (R)
- 138
- Observer
- SM
- Reading
- all checks consistent
- File
- 19680207.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | 21 | 34E | 27 | |||
| 2 | R – 2 | -7 | 2E | 59 | |||
| 3 | R – 1 | -26 | 21W | 82 | |||
| 4 | R – 1 | -23 | 23W | 84 | |||
| 5 | C – 5 | -19 | 46W | 107 | |||
| 6 | C – 12 | -14 | 29W | 90 | |||
| 7 | E – 7 | 12 | 55W | 116 | |||
| 8 | R – 1 | 8 | 38W | 99 | |||
| 9 | C – 17 | 13 | 10W | 71 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.