Daily Sunspot Evaluation
Observation Sheet Sunday, 14 April 1968
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)
- 38
- Relative number (R)
- 118
- Observer
- SM
- Reading
- all checks consistent
- File
- 19680414.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 17 | 24 | 10°E | 249 | |||
| 2 | J – 1 | 31 | 32°E | 227 | |||
| 3 | ? – 1 | -12 | 82°E | 177 | |||
| 4 | ? – 2 | -15 | 11°E | 248 | |||
| 5 | ? – 2 | -25 | 1°W | 260 | |||
| 6 | C – 10 | -13 | 20°W | 279 | |||
| 7 | J – 2 | 20 | 52°W | 311 | |||
| 8 | J – 3 | 22 | 26°W | 285 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.