Daily Sunspot Evaluation
Observation Sheet Sunday, 13 August 1967
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)
- 10
- Number of spots (f)
- 45
- Relative number (R)
- 145
- Observer
- DK
- Reading
- all checks consistent
- File
- 19670813.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 26 | 06°E | 246 | |||
| 2 | ? – 1 | -28 | 30°E | 162 | |||
| 3 | H – 4 | -16 | 02°E | 250 | |||
| 4 | B – 5 | -48 | 11°W | 263 | |||
| 5 | E – 9 | -22 | 15°W | 267 | |||
| 6 | A – 1 | -7 | 23°W | 275 | |||
| 7 | A – 1 | 2 | 23°W | 275 | |||
| 8 | D – 12 | 22 | 47°W | 293 | |||
| 9 | E – 8 | 25 | 77°W | 329 | |||
| 10 | A – 2 | 20 | 39°W | 291 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.