Daily Sunspot Evaluation
Observation Sheet Saturday, 6 April 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)
- 46
- Relative number (R)
- 126
- Observer
- SM
- Reading
- all checks consistent
- File
- 19680406.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 4 | 20 | 6E | 1 | |||
| 2 | D – 17 | -21 | 32E | 335 | |||
| 3 | A – 2 | -16 | 9W | 16 | |||
| 4 | A – 1 | -19 | 27W | 34 | |||
| 5 | D – 7 | -23 | 67W | 74 | |||
| 6 | A – 2 | -20 | 58W | 65 | |||
| 7 | D – 11 | 9 | 37W | 44 | |||
| 8 | A – 2 | 19 | 29W | 36 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.