Daily Sunspot Evaluation
Observation Sheet Sunday, 5 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)
- 9
- Number of spots (f)
- 75
- Relative number (R)
- 165
- Observer
- FY
- Reading
- all checks consistent
- File
- 19590405.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 29 | 13 | 13E | ||||
| 2 | A – 1 | 9 | 14E | ||||
| 3 | ? – 3 | 22 | 75E | ||||
| 4 | D – 8 | 13 | 73E | ||||
| 5 | A – 1 | -20 | 30E | ||||
| 6 | E – 20 | 15 | 64W | ||||
| 7 | A – 2 | 17 | 51W | ||||
| 8 | ? – 8 | 25 | 76W | ||||
| 9 | J – 3 | 28 | 63W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.