Daily Sunspot Evaluation
Observation Sheet Thursday, 13 July 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)
- 6
- Number of spots (f)
- 22
- Relative number (R)
- 82
- Observer
- SM
- Reading
- all checks consistent
- File
- 19670713.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 9 | 24 | 3°E | 248 | |||
| 2 | C – 4 | -20 | 55°E | 246 | |||
| 3 | A – 2 | -14 | 23°E | 248 | |||
| 4 | A – 1 | -21 | 34°E | 267 | |||
| 5 | A – 1 | 18 | 50°W | 351 | |||
| 6 | A – 5 | 23 | 49°W | 350 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.