Daily Sunspot Evaluation
Observation Sheet Tuesday, 6 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)
- 56
- Relative number (R)
- 146
- Observer
- SM
- Reading
- all checks consistent
- File
- 19680206.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 8 | 12 | 5E | 71 | |||
| 2 | A – 1 | 21 | 50E | 26 | |||
| 3 | A – 1 | -24 | 8W | 84 | |||
| 4 | C – 13 | -15 | 14W | 90 | |||
| 5 | H – 5 | -18 | 35W | 111 | |||
| 6 | ? – 7 | 15 | 80W | 156 | |||
| 7 | E – 19 | 12 | 40W | 116 | |||
| 8 | A – 1 | 8 | 23W | 99 | |||
| 9 | A – 1 | 5 | 15W | 91 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.