Daily Sunspot Evaluation
Observation Sheet Friday, 31 March 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)
- 8
- Number of spots (f)
- 61
- Relative number (R)
- 141
- Observer
- DK
- Reading
- counts consistent, some coordinates doubtful
- File
- 19670331.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 2 | 27 | 43E | 194 | |||
| 2 | J – 1 | 22 | 65E | 172 | |||
| 3 | D – 13 | -19 | 92E | 293 ⚠ | |||
| 4 | E – 11 | -20 | 59W | 296 | |||
| 5 | E – 29 | 14 | 57W | 295 | |||
| 6 | B – 3 | 19 | 38W | 275 | |||
| 7 | A – 1 | 30 | 45W | 292 ⚠ | |||
| 8 | A – 1 | 31 | 46W | 291 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.