Daily Sunspot Evaluation
Observation Sheet Friday, 9 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)
- 8
- Number of spots (f)
- 63
- Relative number (R)
- 143
- Observer
- LT
- Reading
- counts consistent, some coordinates doubtful
- File
- 19680209.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 3 | 20 | 6E | 31 | |||
| 2 | C – 9 | 20 | 20E | 17 | |||
| 3 | ? – 13 | 19 | 64E | 333 | |||
| 4 | H – 2 | -15 | 75E | 322 | |||
| 5 | A – 4 | -20 | 73W | 324 ⚠ | |||
| 6 | H – 4 | -16 | 56W | 93 | |||
| 7 | ? – 5 | 10 | 77W | 114 | |||
| 8 | B – 23 | 11 | 34W | 71 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.