Daily Sunspot Evaluation
Observation Sheet Wednesday, 28 August 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)
- 15
- Relative number (R)
- 55
- Observer
- AT
- Reading
- all checks consistent
- File
- 19680828.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 11 | 77E | 185 | |||
| 2 | C – 6 | -11 | 53E | 209 | |||
| 3 | C – 6 | -18 | 52W | 314 | |||
| 4 | A – 1 | 8 | 32W | 294 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.