Daily Sunspot Evaluation
Observation Sheet Saturday, 11 May 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)
- 7
- Number of spots (f)
- 34
- Relative number (R)
- 104
- Observer
- AT
- Reading
- counts consistent, some coordinates doubtful
- File
- 19680511.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 5 | 26 | 15E | 346 ⚠ | |||
| 2 | D – 7 | 18 | 35E | 330 | |||
| 3 | B – 5 | -18 | 33E | 333 | |||
| 4 | A – 1 | -38 | 16E | 349 | |||
| 5 | A – 3 | -24 | 20W | 385 | |||
| 6 | G – 7 | 21 | 43W | 308 ⚠ | |||
| 7 | G – 6 | 17 | 24W | 283 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.