Daily Sunspot Evaluation
Observation Sheet Thursday, 2 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)
- 10
- Number of spots (f)
- 100
- Relative number (R)
- 200
- Observer
- FY
- Reading
- all checks consistent
- File
- 19590402.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 4 | 16 | 27E | ||||
| 2 | A – 3 | 10 | 54E | ||||
| 3 | A – 2 | -10 | 18E | ||||
| 4 | A – 2 | -10 | 10E | ||||
| 5 | B – 9 | -12 | 36W | ||||
| 6 | H – 3 | 8 | 49W | ||||
| 7 | A – 2 | 4 | 25W | ||||
| 8 | B – 11 | 20 | 64W | ||||
| 9 | E – 26 | 15 | 20W | ||||
| 10 | F – 38 | 25 | 23W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.