Daily Sunspot Evaluation
Observation Sheet Tuesday, 8 April 1969
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)
- 5
- Number of spots (f)
- 24
- Relative number (R)
- 74
- Observer
- SM
- Reading
- all checks consistent
- File
- 19690408.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 12 | 11 | 08E | 195 | |||
| 2 | A – 6 | -13 | 27E | 176 | |||
| 3 | J – 2 | -19 | 14E | 189 | |||
| 4 | ? – 2 | 11 | 76W | 279 | |||
| 5 | J – 2 | 20 | 56W | 259 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.