Daily Sunspot Evaluation
Observation Sheet Tuesday, 7 April 1959
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)
- 6
- Number of spots (f)
- 64
- Relative number (R)
- 124
- Observer
- MH
- Reading
- all checks consistent
- File
- 19590407.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 10 | 23 | 47E | ||||
| 2 | D – 12 | 13 | 43E | ||||
| 3 | D – 15 | -22 | 33E | ||||
| 4 | A – 1 | 21 | 40W | ||||
| 5 | A – 1 | 17 | 21W | ||||
| 6 | C – 25 | 13 | 14W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.