Daily Sunspot Evaluation
Observation Sheet Wednesday, 1 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)
- 13
- Number of spots (f)
- 201
- Relative number (R)
- 331
- Observer
- ET
- Reading
- all checks consistent
- File
- 19590401.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 7 | 15 | 40E | ||||
| 2 | J – 2 | -11 | 23E | ||||
| 3 | ? – 1 | -34 | 15W | ||||
| 4 | B – 6 | -12 | 23W | ||||
| 5 | ? – 10 | -10 | 68W | ||||
| 6 | B – 3 | -2 | 53W | ||||
| 7 | H – 13 | 8 | 35W | ||||
| 8 | C – 17 | 19 | 52W | ||||
| 9 | ? – 1 | 24 | 72W | ||||
| 10 | A – 2 | 11 | 26W | ||||
| 11 | E – 65 | 24 | 18W | ||||
| 12 | E – 70 | 13 | 6W | ||||
| 13 | A – 4 | 21 | 0 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.