Daily Sunspot Evaluation
Observation Sheet Saturday, 9 March 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)
- 27
- Relative number (R)
- 67
- Observer
- SM
- Reading
- all checks consistent
- File
- 19680309.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 9 | 19 | 17E | 356 | |||
| 2 | A – 6 | -13 | 55E | 318 | |||
| 3 | H – 4 | -22 | 34W | 47 | |||
| 4 | B – 8 | -16 | 28W | 41 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.