Daily Sunspot Evaluation
Observation Sheet Monday, 8 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)
- 5
- Number of spots (f)
- 25
- Relative number (R)
- 75
- Observer
- AT
- Reading
- all checks consistent
- File
- 19680408.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 5 | 25 | 60E | 281 | |||
| 2 | D – 10 | -21 | 7E | 334 | |||
| 3 | D – 6 | -16 | 49W | 30 | |||
| 4 | C – 3 | 8 | 63W | 44 | |||
| 5 | A – 1 | 33 | 13W | 354 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.