Daily Sunspot Evaluation
Observation Sheet Wednesday, 19 April 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)
- 7
- Number of spots (f)
- 12
- Relative number (R)
- 82
- Observer
- SK
- Reading
- counts consistent, some coordinates doubtful
- File
- 19670419.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 3 | 22 | 03E | 348 ⚠ | |||
| 2 | A – 2 | 20 | 31E | 315 | |||
| 3 | H – 1 | 24 | 50E | 292 ⚠ | |||
| 4 | ? – 2 | -14 | 71E | 271 ⚠ | |||
| 5 | H – 2 | -22 | 55E | 291 | |||
| 6 | A – 1 | -11 | 18W | 1 | |||
| 7 | ? – 1 | 1 | 73W | 59 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.