Daily Sunspot Evaluation
Observation Sheet Tuesday, 25 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)
- 9
- Number of spots (f)
- 29
- Relative number (R)
- 119
- Observer
- SK
- Reading
- all checks consistent
- File
- 19670425.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 10 | 27 | 31E | 233 | |||
| 2 | A – 2 | -19 | 62E | 205 | |||
| 3 | J – 1 | -24 | 13W | 280 | |||
| 4 | B – 5 | -14 | 08W | 275 | |||
| 5 | J – 4 | -22 | 25W | 292 | |||
| 6 | ? – 2 | -27 | 74W | 341 | |||
| 7 | ? – 1 | 26 | 75W | 342 | |||
| 8 | A – 2 | 14 | 16W | 283 | |||
| 9 | H – 2 | 23 | 24W | 291 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.